Knowledge (XXG)

San Gregorio Formation, Venezuela

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1861: 1759: 1983: 350: 430:(SGOP) Locality has been interpreted to represent carcasses that were washed into the ocean by streams and rivers of the backshore, supported by the disarticulated and fragmentary nature of most remains found in the Cocuiza Member. However, the fauna discovered in this member suggests that an environment similar to that of the older Vergel Member (forested grassland mixed with wetlands or permanent freshwater habitats) was found further inland, providing the locality with its freshwater and terrestrial fossil remains. 1696: 130: 2107: 1318: 1428: 1212: 241: 1175: 2755: 1586: 2520: 2374: 1351: 211: 422:, a tree boa, clearly indicating the presence of forested areas. This is supported by the palynoflora, which shows the presence of plants associated with rainforests. However, the general size of seeds and fruits found in the Norte Casa Chiguaje locality is more in-line with open environments, ultimately suggesting an environment featuring both forested areas as well as more open grassland. 341:, an age between 0.709100 and 0.709342 Ma was determined for the Cocuiza Member. Some samples utilized suggested that they had been chemically altered, while two localities yielded an early Pleistocene age. The third member recognized by Stainforth is the Rio Seco Member, however it has not been dated by the 2021 study by Carrillo-Briceño and colleagues. 2814:
Carrillo-Briceño, Jorge D.; Sánchez, Rodolfo; Scheyer, Torsten M.; Carrillo, Juan D.; Delfino, Massimo; Georgalis, Georgios L.; Kerber, Leonardo; Ruiz-Ramoni, Damián; Birindelli, José L. O.; Cadena, A, Edwin-Alberto; Rincón, ldo F.; Chavez-Hoffmeister, Martin; Carlini, Alfredo A.; Carvalho, Mónica
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meanwhile represents a mostly marine environment following marine incurions in northern South America. The presence of sharks, echinoderms, oyster colonies and marine gastropods suggests a coastal setting. Fossils of terrestrial and freshwater fauna discovered in the San Gregorio Oeste del Pueblo
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is split into three members, the older Vergel Member (Late Pliocene to earliest Pleistocene), the Cocuiza Member (Pleistocene) and the Río Seco Member. During this time the region is thought to have been covered by a mixed environment of open grassland and forested areas surrounding a permanent
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in particular is commonly associated with flowing waters and sandy banks, although it can also be found in still waters. Overall the depositional environment may have been consisting of floodplains and braided rivers alongside a series of other environments. Swamps, ponds and flooded areas for
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instance are also possible and may have been home to armored catfish and swamp eels, whose modern members are known to inhabit oxygen-poor bodies of water. Aside from freshwater fish, some fossils also indicate the presence of animal's capable of tolerating a wider range of salt (such as
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and sparse conglomerates. In their study on the formation Carrillo-Briceño and colleagues determined a late Pliocene to earliest Pleistocene age. Overlying the Vergel Member is the Cocuiza Member, a sequence of 80 meters composed of sandstone, mudstone and
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freshwater system. The diverse fauna of the San Gregorio Formation, including a variety of freshwater fish, crocodilians, turtles and snakes, also includes many mammals interpreted to have been part of the first major wave of the
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The rainforest taxa recovered from the Vergel Member's flora are absent from the Cocuiza Member, suggesting that drying climate during the Pliocene-Pleistocene transition caused a great turnover in the flora of the northern
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with low tolerance for saltwater supports this, suggesting that the region also featured estuaries. Frogs, podocnemidid turtles and caimans are all indicative of freshwater environments of varying nature, while
397:. This highly diverse fauna indicates that the Vergel member heavily featured permanent bodies of freshwater, likely rivers, as well as other slower moving bodies of water such as swamps, marshes and/or ponds. 389:
meanwhile are generally associated with slow moving waters, marshes and swamps. Other animals found in the Vergel Member associated with bodies of water include freshwater molluscs and crabs, the
3093: 361:, showcasing a great abundance of catfish in particular, clearly shows that permanent rivers played a vital part in the environment of the Pliocene San Gregorio Formation. The stingray 2897:
Aguileraa, Orangel; Lopesb, Ricardo T.; Rodriguezc, Felix; dos Santosb, Thaís M.; Rodrigues-Almeidaa, Caroline; Almeidaa, Paulo; Machadob, Alessandra S.; Moretti, Tailan (2020).
3078: 3073: 3014:"A new Dasypodini armadillo (Xenarthra: Cingulata) from San Gregorio Formation, Pliocene of Venezuela: affinities and biogeographic interpretations" 1860: 3098: 1982: 324:
divided the San Gregorio Formation into three subsections. The oldest of these is the Vergel Member, composed of 260 meters of
2899:"Fossil sea catfish (Siluriformes; Ariidae) otoliths and in-skull otoliths from the Neogene of the Western Central Atlantic" 338: 1758: 3103: 3088: 3113: 3108: 2946:
Forasiepi, A.M.; Soibelzon, L.H.; Gomez, C.S.; Sánchez, R.; Quiroz, L.I.; Jaramillo, C.; Sánchez-Villagra, M.R. (2014).
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R.; Trejos-Tamayo, Raúl; Vallejo, Felipe; Jaramillo, Carlos; Jones, Douglas S.; Sánchez-Villagra, Marcelo R. (2021).
3083: 275: 349: 315: 232: 1948: 381: 303: 129: 2479: 1317: 299: 156: 3025: 2962: 2910: 2828: 2404: 870: 270: 2948:"Carnivorans at the Great American Biotic Interchange: new discoveries from the northern neotropics" 1695: 2106: 1427: 1235:
the elements are too fragmentary to safely refer to Hypostominae that are present in the formation
984: 1211: 3049: 2994: 2928: 2579: 895: 648: 254: 2947: 1360: 1174: 416:. These animals would suggest a forested-grassland environment, with the presence of the genus 3041: 2986: 2856: 1783: 920: 240: 3033: 2978: 2970: 2918: 2846: 2836: 2754: 2630: 2554: 814: 2876:"PALAEODIVERSITY OF CARIBBEAN ECHINOIDS INCLUDING NEW MATERIAL FROM THE VENEZUELAN NEOGENE" 2603: 2435: 1742: 1268: 307: 3029: 2966: 2914: 2832: 1585: 400:
The terrestrial fauna features a variety of endemic South American mammals ranging from
2851: 2816: 2529: 2519: 2383: 1965: 1575: 1085: 1035: 409: 3067: 3053: 2998: 2932: 2875: 2691: 2317: 2091: 1603: 1518: 1311: 1244: 1203: 617: 562: 405: 283: 81: 37: 24: 2373: 1350: 2737: 2502: 1649: 1596: 1539: 1490: 1407: 1382: 1221: 1184: 401: 375: 363: 2874:
Mihaljeviü, M.; Klug, C.; Aguilera, O.; Lüthi, T.; Sánchez-Villagra, M.R. (2010).
2923: 2898: 3013: 2709: 2420: 2226: 2201: 1895: 1840: 1671: 1560: 1329: 749: 509: 287: 279: 262: 56: 2841: 3037: 2974: 2650: 2336: 2332: 2246: 2130: 2116: 2054: 2033: 1941: 1816: 1057: 961: 729: 599: 580: 495: 435: 413: 101: 66: 2764: 2670: 2349: 2291: 1992: 1506: 1438: 1289: 1126: 1106: 1073: 863: 767: 386: 334: 325: 266: 216: 193: 179: 106: 50: 32: 3045: 2990: 2860: 374:), possibly indicating a proximity to marine environments. The presence of 3012:
Castro, M.C.; Carlini, A.A.; Sánchez, R.; Sánchez-Villagra, M.R. (2014).
2455: 2426: 2267: 2161: 2143: 2012: 1916: 1687: 1196: 710: 658: 418: 394: 329: 258: 183: 96: 91: 76: 71: 61: 41: 28: 2982: 2718: 2541: 2073: 1796: 1735: 1464: 1155: 888: 635: 502: 390: 370: 311: 111: 86: 1148:, other fossils may represent a third genus was present in the region 2083: 1871: 1792: 1768: 938: 913: 468: 2175: 1710: 1625: 1011: 838: 790: 686: 538: 2753: 2518: 2372: 1859: 1694: 1584: 1426: 1349: 1316: 1210: 1173: 473: 348: 2044:
fragmentary skulls, shell and assorted other postcranial remains
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possibly one or several species of the "pacu" or "Myleus clade"
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which requires humid soil and prehistoric relatives of the
2817:"A Pliocene–Pleistocene continental biota from Venezuela" 1550:
eroded and isolated elements of the skull and postcrania
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could have easily inhabited areas closer to the coast.
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the extant American Pipe Snake or False Coral Snake
228: 223: 204: 199: 189: 175: 170: 162: 152: 144: 136: 18: 3094:Fossiliferous stratigraphic units of South America 2621:a nearly complete skull and an isolated tooth 1232:parts of the pectoral spine and armor plates 8: 1660:isolated cranial and postcranial elements 1096:fin spine fragments and bony armor plates 306:. Outcrops of this formation are found in 302:and forms the most recent sequence of the 239: 128: 15: 2922: 2850: 2840: 314:. The formation is named for the town of 2903:Journal of South American Earth Sciences 2105: 1981: 1757: 353:Paleofauna of the San Gregorio Formation 298:The San Gregorio Formation overlies the 2791: 1511:the first recorded fossil of the genus 1099:one or more species of armored catfish 1078:the first recorded fossil of the genus 2809: 2807: 2805: 2803: 2801: 2799: 2797: 2795: 1137:fin spines, scutes and skull remains 278:in addition to native clades such as 7: 2133:, teeth, osteoderms and other bones 1686:sacral vertebrae fused to a partial 1453:teeth of the premaxilla and dentary 2237:isolated teeth and tooth fragments 525:Uncertain or tentative taxa are in 1259:two symphyseal premaxillary teeth 1140:while some elements may represent 14: 1421:isolated teeth and caudal spines 485:Taxon falsely reported as present 3079:Pliocene Series of South America 3074:Geologic formations of Venezuela 1830:cranial and postcranial remains 445:suggests a fluvial environment. 209: 490:Dubious taxon or junior synonym 2821:Swiss Journal of Palaeontology 1344:incomplete pectoral fin-spine 1: 2748:teeth and a partial mandible 1201:some specimen are similar to 140:Urumaco stratigraphic section 2924:10.1016/j.jsames.2020.102619 2469:various postcranial remains 2003:fragmentary trunk vertebrae 1976:various postcranial remains 1933:a moderately large tree boa 148:Vergel Member Cocuiza Member 2775:incomplete caudal vertebra 2425:an extinct relative of the 1906:fragmentary trunk vertebra 1888:A type of Mata mata turtle 1279:a single isolated vertebra 1046:abundant isolated material 452: 322:Robert Masterman Stainforth 310:, northeast of the town of 166:~570 m (1,870 ft) 3130: 2880:Palaeontologia Electronica 2842:10.1186/s13358-020-00216-6 1930:incomplete trunk vertebra 1807:incomplete trunk vertebra 1751:incomplete trunk vertebra 1479:a fragmented dorsal spine 276:Great American Interchange 3099:Paleontology in Venezuela 3038:10.1007/s00114-013-1131-5 2975:10.1007/s00114-014-1237-4 1578:with teeth and vertebrae 1195:fin spines fragments and 459: 455: 238: 127: 23: 2446:an isolated tooth crown 457: 1854:incomplete right femur 441:The composition of the 316:San Gregorio, Venezuela 255:lithostratigraphic unit 233:San Gregorio, Venezuela 2758: 2586:Pliodasypus vergelianu 2523: 2377: 2259:currently undescribed 2110: 1986: 1864: 1762: 1699: 1589: 1431: 1354: 1321: 1215: 1178: 533:taxa are discredited. 382:Crocodylus falconensis 357:The fish fauna of the 354: 251:San Gregorio Formation 19:San Gregorio Formation 2757: 2705:partial hemimandible 2522: 2412:Hydrochoeropsis wayuu 2376: 2109: 1985: 1863: 1782:similar to the genus 1761: 1698: 1588: 1581:a genus of swamp eel 1430: 1353: 1320: 1214: 1177: 352: 304:stratigraphic section 3104:Sandstone formations 3089:Quaternary Venezuela 2681:a fragmentary femur 2026:non-snake squamates 412:to smaller types of 3114:Lacustrine deposits 3109:Mudstone formations 3030:2014NW....101...77C 3018:Naturwissenschaften 2967:2014NW....101..965F 2955:Naturwissenschaften 2915:2020JSAES.10102619A 2833:2021SwJP..140....9C 2641:metacarpal remains 2486:Marisela gregoriana 2100:maxillary fragment 2023:fragmentary skulls 1779:isolated vertebrae 647:grasses resembling 257:dating back to the 49:5.33–0.709100  25:Stratigraphic range 2759: 2524: 2493:an isolated molar 2394:fragmentary teeth 2378: 2309:a type of Opossum 2111: 1987: 1885:plastron fragment 1865: 1763: 1700: 1590: 1432: 1355: 1322: 1216: 1179: 480:Reclassified taxon 355: 288:caviomorph rodents 3084:Neogene Venezuela 2783: 2782: 2169: 2168: 2069:dentary fragment 1704: 1703: 1619: 1618: 1005: 1004: 921:E. cf. emarginata 832: 831: 784: 783: 675: 674: 537: 536: 528: 516: 515: 512: 505: 498: 491: 486: 481: 476: 391:False Coral Snake 247: 246: 3121: 3058: 3057: 3009: 3003: 3002: 2952: 2943: 2937: 2936: 2926: 2894: 2888: 2887: 2871: 2865: 2864: 2854: 2844: 2811: 2631:Proterotheriidae 2306:partial humerus 2176: 1711: 1626: 1397:pectoral spines 1371:pectoral spines 1012: 995:Cocuiza Member 839: 815:Trichodactylidae 791: 687: 539: 526: 508: 501: 494: 489: 484: 479: 472: 469: 453: 345:Paleoenvironment 339:strontium dating 300:Codore Formation 243: 215: 213: 212: 157:Codore Formation 132: 123: 53: 16: 3129: 3128: 3124: 3123: 3122: 3120: 3119: 3118: 3064: 3063: 3062: 3061: 3011: 3010: 3006: 2961:(11): 965–974. 2950: 2945: 2944: 2940: 2896: 2895: 2891: 2873: 2872: 2868: 2813: 2812: 2793: 2788: 2772:Cocuiza Member 2745:Cocuiza Member 2726:Cocuiza Member 2708:a large bodied 2702:Cocuiza Member 2678:Cocuiza Member 2617:Cocuiza Member 2604:Proeremotherium 2465:Cocuiza Member 2436:Interatheriidae 2405:Hydrochoeropsis 2363:Cocuiza Member 2216:two osteoderms 2174: 2157:trunk vertebra 2154:Cocuiza Member 2126:Cocuiza Member 2097:Cocuiza Member 1826:Cocuiza Member 1709: 1624: 1609:Cocuiza Member 1576:pharyngeal bone 1529:isolated teeth 1269:Myliobatiformes 1168:isolated teeth 1010: 972:Cocuiza Member 949:Cocuiza Member 926:Cocuiza Member 901:Cocuiza Member 876:Cocuiza Member 837: 789: 774:Cocuiza Member 685: 680: 524: 467: 451: 443:Rio Seco Member 387:Matamata turtes 347: 296: 219: 210: 208: 122: 121: 120: 119: 114: 109: 104: 99: 94: 89: 84: 79: 74: 69: 64: 59: 48: 47: 45: 35: 12: 11: 5: 3127: 3125: 3117: 3116: 3111: 3106: 3101: 3096: 3091: 3086: 3081: 3076: 3066: 3065: 3060: 3059: 3004: 2938: 2889: 2866: 2790: 2789: 2787: 2784: 2781: 2780: 2778: 2776: 2773: 2770: 2768: 2761: 2760: 2751: 2749: 2746: 2743: 2741: 2734: 2733: 2731: 2729: 2727: 2724: 2722: 2715: 2714: 2712: 2706: 2703: 2700: 2695: 2687: 2686: 2684: 2682: 2679: 2676: 2674: 2667: 2666: 2664: 2662: 2661:a partial jaw 2659: 2658:Vergel Member 2656: 2654: 2653:incerta sedis 2647: 2646: 2644: 2642: 2639: 2638:Vergel Member 2636: 2634: 2627: 2626: 2624: 2622: 2619: 2615:Vergel Member 2613: 2607: 2598: 2597: 2595: 2593: 2591: 2590:Vergel Member 2588: 2583: 2575: 2574: 2572: 2570: 2567: 2566:Vergel Member 2564: 2558: 2549: 2548: 2546: 2544: 2538: 2537:Vergel Member 2535: 2533: 2530:Neoepiblemidae 2526: 2525: 2516: 2514: 2513:right humerus 2511: 2510:Vergel Member 2508: 2506: 2499: 2498: 2496: 2494: 2491: 2490:Vergel Member 2488: 2483: 2475: 2474: 2472: 2470: 2467: 2463:Vergel Member 2461: 2459: 2452: 2451: 2449: 2447: 2444: 2443:Vergel Member 2441: 2439: 2432: 2431: 2429: 2423: 2419:a dentary and 2417: 2416:Vergel Member 2414: 2408: 2400: 2399: 2397: 2395: 2392: 2391:Vergel Member 2389: 2387: 2384:Hydrochoerinae 2380: 2379: 2370: 2368: 2365: 2361:Vergel Member 2359: 2353: 2344: 2343: 2341: 2339: 2329: 2328:Vergel Member 2326: 2321: 2313: 2312: 2310: 2307: 2304: 2303:Vergel Member 2301: 2295: 2286: 2285: 2283: 2281: 2279: 2278:Vergel Member 2276: 2271: 2263: 2262: 2260: 2257: 2255: 2254:Vergel Member 2252: 2250: 2243: 2242: 2240: 2238: 2235: 2234:Vergel Member 2232: 2230: 2222: 2221: 2219: 2217: 2214: 2213:Vergel Member 2211: 2205: 2196: 2195: 2192: 2189: 2186: 2183: 2180: 2173: 2170: 2167: 2166: 2164: 2158: 2155: 2152: 2147: 2139: 2138: 2136: 2134: 2128: 2124:Vergel Member 2122: 2120: 2113: 2112: 2103: 2101: 2098: 2095: 2087: 2079: 2078: 2076: 2072:a large sized 2070: 2067: 2066:Vergel Member 2064: 2059: 2050: 2049: 2047: 2045: 2042: 2041:Vergel Member 2039: 2037: 2030: 2029: 2027: 2024: 2021: 2020:Vergel Member 2018: 2016: 2009: 2008: 2006: 2004: 2001: 2000:Vergel Member 1998: 1996: 1989: 1988: 1979: 1977: 1974: 1973:Vergel Member 1971: 1969: 1966:Podocnemididae 1962: 1961: 1959: 1957: 1955: 1954:Vergel Member 1952: 1949:C. falconensis 1945: 1937: 1936: 1934: 1931: 1928: 1927:Vergel Member 1925: 1920: 1912: 1911: 1909: 1907: 1904: 1903:Vergel Member 1901: 1899: 1892: 1891: 1889: 1886: 1883: 1882:Vergel Member 1880: 1875: 1867: 1866: 1857: 1855: 1852: 1851:Vergel Member 1849: 1844: 1836: 1835: 1833: 1831: 1828: 1824:Vergel Member 1822: 1820: 1813: 1812: 1810: 1808: 1805: 1804:Vergel Member 1802: 1800: 1789: 1788: 1786: 1780: 1777: 1776:Vergel Member 1774: 1772: 1765: 1764: 1755: 1752: 1749: 1748:Vergel Member 1746: 1739: 1731: 1730: 1727: 1724: 1721: 1718: 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785: 782: 781: 779: 777: 775: 772: 770: 764: 763: 761: 759: 757: 756:Vergel Member 754: 752: 745: 744: 742: 740: 738: 737:Vergel Member 735: 733: 726: 725: 723: 721: 719: 718:Vergel Member 716: 714: 707: 706: 703: 700: 697: 694: 691: 684: 681: 679: 676: 673: 672: 670: 668: 666: 665:Vergel Member 663: 661: 654: 653: 651: 645: 643: 642:Vergel Member 640: 638: 632: 631: 629: 627: 625: 624:Vergel Member 622: 620: 614: 613: 611: 609: 607: 606:Vergel Member 604: 602: 595: 594: 592: 590: 588: 587:Vergel Member 585: 583: 577: 576: 574: 572: 570: 569:Vergel Member 567: 565: 559: 558: 555: 552: 549: 546: 543: 535: 534: 519: 517: 514: 513: 506: 499: 492: 487: 482: 477: 461: 460: 458: 456: 450: 447: 427:Cocuiza Member 376:foraminiferans 346: 343: 295: 292: 245: 244: 236: 235: 230: 226: 225: 221: 220: 206: 202: 201: 197: 196: 191: 187: 186: 177: 173: 172: 168: 167: 164: 160: 159: 154: 150: 149: 146: 142: 141: 138: 134: 133: 125: 124: 117: 116: 115: 110: 105: 100: 95: 90: 85: 80: 75: 70: 65: 60: 55: 54: 21: 20: 13: 10: 9: 6: 4: 3: 2: 3126: 3115: 3112: 3110: 3107: 3105: 3102: 3100: 3097: 3095: 3092: 3090: 3087: 3085: 3082: 3080: 3077: 3075: 3072: 3071: 3069: 3055: 3051: 3047: 3043: 3039: 3035: 3031: 3027: 3023: 3019: 3015: 3008: 3005: 3000: 2996: 2992: 2988: 2984: 2980: 2976: 2972: 2968: 2964: 2960: 2956: 2949: 2942: 2939: 2934: 2930: 2925: 2920: 2916: 2912: 2908: 2904: 2900: 2893: 2890: 2885: 2881: 2877: 2870: 2867: 2862: 2858: 2853: 2848: 2843: 2838: 2834: 2830: 2826: 2822: 2818: 2810: 2808: 2806: 2804: 2802: 2800: 2798: 2796: 2792: 2785: 2779: 2777: 2774: 2771: 2769: 2766: 2763: 2762: 2756: 2752: 2750: 2747: 2744: 2742: 2739: 2736: 2735: 2732: 2730: 2728: 2725: 2723: 2720: 2717: 2716: 2713: 2711: 2707: 2704: 2701: 2699: 2696: 2694: 2693: 2692:Chapalmalania 2689: 2688: 2685: 2683: 2680: 2677: 2675: 2672: 2669: 2668: 2665: 2663: 2660: 2657: 2655: 2652: 2649: 2648: 2645: 2643: 2640: 2637: 2635: 2632: 2629: 2628: 2625: 2623: 2620: 2618: 2614: 2612: 2608: 2606: 2605: 2600: 2599: 2596: 2594: 2592: 2589: 2587: 2584: 2582: 2581: 2577: 2576: 2573: 2571: 2568: 2565: 2563: 2559: 2557: 2556: 2551: 2550: 2547: 2545: 2543: 2539: 2536: 2534: 2531: 2528: 2527: 2521: 2517: 2515: 2512: 2509: 2507: 2504: 2501: 2500: 2497: 2495: 2492: 2489: 2487: 2484: 2482: 2481: 2477: 2476: 2473: 2471: 2468: 2466: 2462: 2460: 2457: 2454: 2453: 2450: 2448: 2445: 2442: 2440: 2437: 2434: 2433: 2430: 2428: 2424: 2422: 2418: 2415: 2413: 2409: 2407: 2406: 2402: 2401: 2398: 2396: 2393: 2390: 2388: 2385: 2382: 2381: 2375: 2371: 2369: 2366: 2364: 2360: 2358: 2357:H. floridanus 2354: 2352: 2351: 2346: 2345: 2342: 2340: 2338: 2334: 2330: 2327: 2325: 2322: 2320: 2319: 2318:Falcontoxodon 2315: 2314: 2311: 2308: 2305: 2302: 2300: 2296: 2294: 2293: 2288: 2287: 2284: 2282: 2280: 2277: 2275: 2272: 2270: 2269: 2265: 2264: 2261: 2258: 2256: 2253: 2251: 2248: 2245: 2244: 2241: 2239: 2236: 2233: 2231: 2228: 2224: 2223: 2220: 2218: 2215: 2212: 2210: 2206: 2204: 2203: 2198: 2197: 2193: 2190: 2187: 2184: 2181: 2178: 2177: 2171: 2165: 2163: 2159: 2156: 2153: 2151: 2148: 2146: 2145: 2141: 2140: 2137: 2135: 2132: 2129: 2127: 2123: 2121: 2118: 2115: 2114: 2108: 2104: 2102: 2099: 2096: 2094: 2093: 2088: 2086: 2085: 2081: 2080: 2077: 2075: 2071: 2068: 2065: 2063: 2060: 2057: 2056: 2052: 2051: 2048: 2046: 2043: 2040: 2038: 2035: 2032: 2031: 2028: 2025: 2022: 2019: 2017: 2014: 2011: 2010: 2007: 2005: 2002: 1999: 1997: 1994: 1991: 1990: 1984: 1980: 1978: 1975: 1972: 1970: 1967: 1964: 1963: 1960: 1958: 1956: 1953: 1951: 1950: 1946: 1944: 1943: 1939: 1938: 1935: 1932: 1929: 1926: 1924: 1921: 1919: 1918: 1914: 1913: 1910: 1908: 1905: 1902: 1900: 1897: 1894: 1893: 1890: 1887: 1884: 1881: 1879: 1876: 1874: 1873: 1869: 1868: 1862: 1858: 1856: 1853: 1850: 1848: 1845: 1843: 1842: 1838: 1837: 1834: 1832: 1829: 1827: 1823: 1821: 1818: 1815: 1814: 1811: 1809: 1806: 1803: 1801: 1798: 1794: 1791: 1790: 1787: 1785: 1781: 1778: 1775: 1773: 1770: 1767: 1766: 1760: 1756: 1753: 1750: 1747: 1745: 1744: 1740: 1738: 1737: 1733: 1732: 1728: 1725: 1722: 1719: 1716: 1713: 1712: 1706: 1697: 1693: 1691: 1689: 1685: 1682: 1680: 1676: 1674: 1673: 1668: 1667: 1664: 1662: 1659: 1656: 1654: 1651: 1648: 1647: 1643: 1640: 1637: 1634: 1631: 1628: 1627: 1621: 1615: 1613: 1611: 1608: 1606: 1605: 1601: 1599: 1598: 1594: 1593: 1587: 1583: 1580: 1577: 1574:dentaries, a 1573: 1570: 1568: 1565: 1563: 1562: 1558: 1557: 1554: 1552: 1549: 1546: 1544: 1541: 1538: 1537: 1534: 1531: 1528: 1525: 1523: 1520: 1519:Serrasalmidae 1517: 1516: 1513: 1510: 1508: 1504: 1501: 1499: 1495: 1493: 1492: 1487: 1486: 1483: 1481: 1478: 1475: 1473: 1469: 1467: 1466: 1461: 1460: 1457: 1455: 1452: 1449: 1447: 1443: 1441: 1440: 1436: 1435: 1429: 1425: 1423: 1420: 1417: 1415: 1412: 1410: 1409: 1405: 1404: 1401: 1399: 1396: 1393: 1391: 1387: 1385: 1384: 1379: 1378: 1375: 1373: 1370: 1367: 1365: 1362: 1359: 1358: 1352: 1348: 1346: 1343: 1340: 1338: 1334: 1332: 1331: 1326: 1325: 1319: 1315: 1313: 1309: 1305: 1302: 1299: 1297: 1294: 1292: 1291: 1287: 1286: 1283: 1281: 1278: 1275: 1273: 1270: 1267: 1266: 1263: 1261: 1258: 1255: 1253: 1249: 1247: 1246: 1245:Megaleporinus 1241: 1240: 1237: 1234: 1231: 1228: 1226: 1223: 1220: 1219: 1213: 1209: 1206: 1205: 1204:Hemiancistrus 1200: 1198: 1194: 1191: 1189: 1186: 1183: 1182: 1176: 1172: 1170: 1167: 1164: 1162: 1159: 1157: 1154: 1153: 1150: 1147: 1143: 1139: 1136: 1133: 1131: 1128: 1125: 1124: 1121: 1119: 1116: 1113: 1111: 1108: 1105: 1104: 1101: 1098: 1095: 1092: 1090: 1087: 1084: 1083: 1080: 1077: 1075: 1071: 1068: 1066: 1062: 1060: 1059: 1054: 1053: 1050: 1048: 1045: 1042: 1040: 1037: 1034: 1033: 1029: 1026: 1023: 1020: 1017: 1014: 1013: 1007: 1001: 999: 997: 994: 992: 989: 987: 986: 982: 981: 978: 976: 974: 971: 969: 966: 964: 963: 959: 958: 955: 953: 951: 948: 946: 943: 941: 940: 936: 935: 932: 930: 928: 925: 923: 922: 918: 916: 915: 911: 910: 907: 905: 903: 900: 898: 897: 896:A. punctulata 893: 891: 890: 886: 885: 882: 880: 878: 875: 873: 872: 871:A. excentrica 868: 866: 865: 861: 860: 856: 853: 850: 847: 844: 841: 840: 834: 828: 826: 824: 821: 819: 816: 813: 812: 808: 805: 802: 799: 796: 793: 792: 786: 780: 778: 776: 773: 771: 769: 766: 765: 762: 760: 758: 755: 753: 751: 747: 746: 743: 741: 739: 736: 734: 731: 728: 727: 724: 722: 720: 717: 715: 712: 709: 708: 704: 701: 698: 695: 692: 689: 688: 682: 677: 671: 669: 667: 664: 662: 660: 656: 655: 652: 650: 646: 644: 641: 639: 637: 634: 633: 630: 628: 626: 623: 621: 619: 618:Cucurbitaceae 616: 615: 612: 610: 608: 605: 603: 601: 597: 596: 593: 591: 589: 586: 584: 582: 579: 578: 575: 573: 571: 568: 566: 564: 563:Amaranthaceae 561: 560: 556: 553: 550: 547: 544: 541: 540: 532: 523: 520: 518: 511: 507: 504: 500: 497: 493: 488: 483: 478: 475: 471: 470: 466: 463: 462: 454: 448: 446: 444: 439: 437: 431: 428: 423: 421: 420: 415: 411: 407: 406:ground sloths 403: 402:notoungulates 398: 396: 392: 388: 384: 383: 377: 373: 372: 366: 365: 360: 359:Vergel Member 351: 344: 342: 340: 336: 331: 327: 323: 319: 317: 313: 309: 305: 301: 293: 291: 289: 285: 284:ground sloths 281: 277: 272: 268: 264: 260: 256: 252: 242: 237: 234: 231: 227: 222: 218: 207: 203: 198: 195: 192: 188: 185: 181: 178: 174: 169: 165: 161: 158: 155: 151: 147: 143: 139: 135: 131: 126: 113: 108: 103: 98: 93: 88: 83: 78: 73: 68: 63: 58: 52: 43: 39: 38:Chapadmalalan 34: 30: 26: 22: 17: 3024:(2): 77–86. 3021: 3017: 3007: 2958: 2954: 2941: 2906: 2902: 2892: 2883: 2879: 2869: 2824: 2820: 2738:Toxodontidae 2697: 2690: 2616: 2610: 2602: 2585: 2578: 2561: 2553: 2503:Mylodontidae 2485: 2478: 2464: 2411: 2403: 2362: 2356: 2348: 2323: 2316: 2298: 2290: 2273: 2266: 2208: 2200: 2149: 2142: 2125: 2090: 2082: 2074:teiid lizard 2061: 2053: 1947: 1940: 1922: 1915: 1877: 1870: 1846: 1839: 1825: 1741: 1734: 1678: 1670: 1602: 1595: 1566: 1559: 1540:Siluriformes 1497: 1491:Scorpiodoras 1489: 1471: 1463: 1445: 1437: 1413: 1408:Potamotrygon 1406: 1389: 1383:Platysilurus 1381: 1336: 1328: 1295: 1288: 1251: 1243: 1222:Loricariidae 1202: 1197:dermal teeth 1185:Hypostominae 1160: 1146:Scorpiodoras 1145: 1141: 1064: 1056: 990: 983: 967: 960: 945:E. secoensis 944: 937: 919: 912: 894: 887: 869: 862: 530: 521: 464: 442: 440: 432: 426: 424: 417: 399: 380: 369: 364:Potamotrygon 362: 358: 356: 320: 308:Falcón State 297: 294:Stratigraphy 250: 248: 224:Type section 2983:11336/32009 2580:Pliodasypus 2367:osteoderms 2333:ankle bones 2227:Caviomorpha 2202:Boreostemma 1896:Colubroides 1841:Chelonoidis 1561:Synbranchus 1330:Pimelodella 1312:serrasalmid 1117:fin spines 835:Echinoderms 787:Crustaceans 750:Planorbidae 649:Chloroideae 531:crossed out 510:Morphotaxon 410:glyptodonts 280:glyptodonts 263:Pleistocene 3068:Categories 2909:: 102619. 2786:References 2651:Typotheria 2569:osteoderm 2337:metatarsal 2247:Cricetidae 2131:coprolites 2117:Crocodylia 2055:Tupinambis 2034:Testudines 1942:Crocodylus 1817:Caimaninae 1743:A. scytale 1707:Reptilians 1622:Amphibians 1604:B. marinus 1505:a partial 1361:Pimeloidea 1142:Amblydoras 1072:a partial 1058:Amblydoras 991:M. atropos 962:Mellitella 730:Gastropoda 678:Paleofauna 600:Cleomaceae 581:Asteraceae 527:small text 496:Ichnotaxon 449:Paleoflora 436:neotropics 414:armadillos 3054:253637167 2999:253635703 2933:219045960 2765:Xenarthra 2710:procyonid 2671:Camelidae 2350:Holmesina 2292:Didelphis 2188:Material 2092:C. yacare 1993:Serpentes 1797:Aniliidae 1784:Epicrates 1723:Material 1638:Material 1507:cleithrum 1439:Schizodon 1290:Mylossoma 1127:Doradidae 1107:Cichlidae 1074:cleithrum 1024:Material 864:Agassizia 851:Material 803:Material 768:Ostreidae 699:Material 551:Material 465:Color key 335:limestone 326:sandstone 271:formation 267:Venezuela 229:Named for 217:Venezuela 194:Limestone 180:Sandstone 171:Lithology 163:Thickness 145:Sub-units 33:Chibanian 3046:24414134 2991:25228347 2861:34721281 2827:(9): 9. 2480:Marisela 2456:Mammalia 2427:Capybara 2268:Cyonasua 2182:Species 2162:anaconda 2160:a large 2144:Eunectes 2013:Squamata 1917:Corallus 1717:Species 1688:urostyle 1632:Species 1446:S. corti 1018:Species 845:Species 797:Species 711:Bivalvia 693:Species 683:Molluscs 659:Vitaceae 545:Species 419:Corallus 395:Capybara 337:. Using 330:mudstone 259:Pliocene 200:Location 184:mudstone 153:Overlies 42:Lujanian 29:Zanclean 3026:Bibcode 2963:Bibcode 2911:Bibcode 2852:8550326 2829:Bibcode 2767:indet. 2740:indet. 2721:indet. 2719:Sirenia 2673:indet. 2633:indet. 2542:phalanx 2540:distal 2532:indet. 2505:indet. 2458:indet. 2438:indet. 2386:indet. 2331:teeth, 2249:indet. 2229:indet. 2185:Member 2172:Mammals 2119:indet. 2036:indet. 2015:indet. 1995:indet. 1968:indet. 1898:indet. 1819:indet. 1799:indet. 1771:indet. 1736:Anilius 1720:Member 1652:indet. 1635:Member 1542:indet. 1521:indet. 1465:Sciades 1363:indet. 1310:clade" 1271:indet. 1224:indet. 1187:indet. 1156:Hoplias 1129:indet. 1109:indet. 1088:indet. 1038:indet. 1021:Member 889:Arbacia 848:Member 817:indet. 800:Member 732:indet. 713:indet. 696:Member 636:Poaceae 548:Member 503:Ootaxon 371:Sciades 312:Urumaco 205:Country 176:Primary 137:Unit of 118:↓ 3052:  3044:  2997:  2989:  2931:  2859:  2849:  2698:C. sp. 2611:P. sp. 2562:P. sp. 2555:Plaina 2421:molars 2335:and a 2324:F. sp. 2299:D. sp. 2274:C. sp. 2209:B. sp. 2194:Image 2191:Notes 2150:E. sp. 2084:Caiman 2062:T. sp. 1923:C. sp. 1878:C. sp. 1872:Chelus 1847:C. sp. 1793:Boidae 1769:Boidae 1729:Image 1726:Notes 1679:P. sp. 1644:Image 1641:Notes 1567:S. sp. 1498:S. sp. 1472:S. sp. 1414:P. sp. 1390:P. sp. 1337:P. sp. 1296:M. sp. 1252:M. sp. 1161:H. sp. 1065:A. sp. 1030:Image 1027:Notes 939:Encope 914:Encope 857:Image 854:Notes 809:Image 806:Notes 705:Image 702:Notes 557:Image 554:Notes 269:. The 214:  3050:S2CID 2995:S2CID 2951:(PDF) 2929:S2CID 2886:(36). 2560:aff. 2552:aff. 2355:aff. 2347:aff. 2207:aff. 2199:aff. 2179:Name 2089:aff. 2058:s.l. 1714:Name 1650:Anura 1629:Name 1597:Bagre 1015:Name 985:Moira 842:Name 794:Name 690:Name 657:aff. 598:aff. 542:Name 522:Notes 474:Taxon 253:is a 190:Other 3042:PMID 2987:PMID 2857:PMID 2609:cf. 2601:cf. 2297:cf. 2289:cf. 1677:cf. 1672:Pipa 1669:cf. 1496:cf. 1488:cf. 1470:cf. 1462:cf. 1444:cf. 1388:cf. 1380:cf. 1335:cf. 1327:cf. 1308:pacu 1250:cf. 1242:cf. 1144:and 1063:cf. 1055:cf. 1008:Fish 748:cf. 425:The 286:and 249:The 57:PreꞒ 3034:doi 3022:101 2979:hdl 2971:doi 2959:101 2919:doi 2907:101 2847:PMC 2837:doi 2825:140 1306:a " 265:of 261:to 3070:: 3048:. 3040:. 3032:. 3020:. 3016:. 2993:. 2985:. 2977:. 2969:. 2957:. 2953:. 2927:. 2917:. 2905:. 2901:. 2884:13 2882:. 2878:. 2855:. 2845:. 2835:. 2823:. 2819:. 2794:^ 529:; 438:. 408:, 404:, 328:, 318:. 290:. 282:, 182:, 107:Pg 51:Ma 27:: 3056:. 3036:: 3028:: 3001:. 2981:: 2973:: 2965:: 2935:. 2921:: 2913:: 2863:. 2839:: 2831:: 2410:? 2225:? 1795:/ 112:N 102:K 97:J 92:T 87:P 82:C 77:D 72:S 67:O 62:Ꞓ 46:~ 44:) 40:- 36:( 31:-

Index

Stratigraphic range
Zanclean
Chibanian
Chapadmalalan
Lujanian
Ma
PreꞒ

O
S
D
C
P
T
J
K
Pg
N

Codore Formation
Sandstone
mudstone
Limestone
Venezuela
San Gregorio, Venezuela

lithostratigraphic unit
Pliocene
Pleistocene
Venezuela

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