436:) is moderately to strongly inflated near to its front, more or less flattened on the top, falling vertically to or slightly overhanging the border furrow. Up to three lateral furrows may be discernable on the glabella behind the utterly dominating frontal lobe. From the back there is a very distinct occipital ring, and in front of that a distinct preoccipital ring which is weakly divided into a strongly convex central lobe and weakly convex lateral lobes. The large to medium size eyes have a crescent shaped outline, and are elevated high above the cheeks. The steep visual surface is kidney shaped. The back corners of the cephalon (or genal angles) are acutely to bluntly rounded, but a genal spine is lacking in adults. In the ventral surface of the seam (or doublure) is in the frontal half of the cephalon a continuous furrow, delineated by ridges, and with notches laterally. This so-called vindicular furrow serves to lock the rim of the tailshield to the headshield when the trilobite is enrolled.
2502:
169:
2488:
417:
460:
2517:
148:
127:
482:
from the same site are arranged in rows, it may be assumed that they are original and not caused by the fossilisation process. The spots are irregular and have spurs branching outwardly, similar to the melanophores in many extant animals. In one specimen, the black spots are much larger than in
443:) is well segmented. The pygidial axis has 9 to 11 rings, and the pleural areas to the sides have 5 to 8 pairs of recognizable ribs. Furrows between the ribs are deep, those that divide each rib in frontal and rear bands are very shallow, and the frontal bands are widest. The surface of the
523:, and are now widely regarded as genera in their own right. Most recent, it was considered that some North-American and North-African species on the one hand and European species on the other hand differ sufficiently from each other to be assigned to separate genera. As the
2389:
CrÎnier, Catherine; Feist, Raimond (2000). "Evolution et systématique du groupe
Cryphops (Phacopinae, Trilobita) du Dévonien Supérieur" [Evolution and systematics of the Cryphops group (Phacopinae, Trilobita) from the Late Devonian].
547:
has a raised ridge along the ventral margin of the cephalon, the glabella is more inflated, the lateral parts of the preoccipital ring are not round but rectangular, the palpebral area and palpebral lobe are larger than in
405:
are compounded of very large, separately set lenses without a common cornea (so called schizochroal eyes), and like almost all other
Phacopina, the articulate mid-length part of the body (or
552:, and there is no fold right behind the posterior vertical row of lenses, nor an isolated raised area just below the lenses. Not all of these characters may differentiate between
2785:
2328:"Trilobites from the Upper Ordovician of Bou Nemrou - El Kaid Errami (Morocco) [Trilobitas del OrdovĂcico Superior de Bou Nemrou - El Kaid Errami (Marruecos)]"
2621:
2780:
2760:
2715:
2680:
2595:
2184:
2765:
2690:
2685:
2750:
1898:
1816:
1800:
2720:
2700:
2770:
2695:
1978:
2790:
2260:
369:, that lived in Europe, northwestern Africa, North and South America and China from the Late Ordovician until the very end of the
2710:
2705:
2755:
2080:
1804:
2740:
2775:
2745:
389:"), a biological defense mechanism that is widespread among smaller trilobites but further perfected in this genus.
2735:
2327:
2725:
259:
594:. These species show a decrease in the number of lenses, which is a more widespread and recurring trend in many
168:
2730:
2098:
2015:
617:
1857:
439:
The axial rings of the thorax do not have convex lateral axial nodes on its outer surface. The tailshield (or
2196:
1942:
1879:
David L. Bruton & Winfried Haas (2001). Philip D. Lane, Derek J. Siveter & Richard A. Fortey (ed.).
2535:
1797:
Arthropoda I - Arthropoda
General Features, Proarthropoda, Euarthropoda General Features, Trilobitomorpha
915:
2647:
2205:
2507:
2438:
1808:
1428:
1940:
George C. Esker III (1968). "Color
Markings in Phacops and Greenops from the Devonian of New York".
1915:
1533:
2675:
2521:
1715:
1213:
2407:
2308:
1988:
1916:"Trilobite Fauna at the Devonian-Carboniferous boundary in South China (S-Guizhou and N-Guangxi)"
1489:
1461:
1246:
1224:
1180:
856:
613:
323:
305:
163:
1279:
595:
2652:
1770:
1676:
1665:
1621:
1544:
1378:
1158:
2634:
2626:
2582:
2493:
2464:
2427:"Discovery of some 400 million year-old sensory structures in the compound eyes of trilobites"
2223:
2123:
1974:
1894:
1882:
Trilobites and their
Relatives: Contributions from the Third International Conference, Making
1880:
1812:
2639:
1566:
1257:
2454:
2446:
2399:
2298:
2165:
1966:
1833:
1599:
685:
467:
with a speculative, cryptic "Rorschach" pattern based on the proposed ability to camouflage.
2000:
1890:
1748:
1687:
1411:
1345:
1312:
1058:
948:
2375:
2442:
483:
another one. It is quite conceivable that changing the size of the melanophores enabled
2459:
2426:
2303:
2286:
1147:
1117:
524:
300:
2669:
2573:
2411:
1759:
1132:
1014:
959:
860:
84:
2312:
2051:
2487:
539:
377:. It was a rounded animal, with a globose head and large eyes, and probably fed on
268:
2587:
1961:
Chlupac, I. (1975). "The distribution of phacopid trilobites in space and time".
2608:
2567:
2084:
1970:
1863:
1654:
1632:
1450:
1367:
1323:
1268:
1102:
1047:
981:
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893:
533:
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59:
17:
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1036:
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871:
374:
366:
239:
104:
69:
41:
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1389:
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226:
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109:
53:
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1334:
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477:
448:
378:
370:
138:
99:
94:
79:
74:
64:
45:
2342:
1963:
Evolution and morphology of the
Trilobita, Trilobitoidea and Merostomata
495:
The concept of many fossil taxa has been tightened over time, including
475:
with many irregular black spots. Because similar spots in a specimen of
147:
2600:
2403:
1737:
1643:
1610:
1439:
1356:
1091:
926:
568:
286:
114:
89:
2613:
2450:
126:
2169:
606:
190:
2529:
2156:
Delo, 1935 (Trilobita) from the Middle
Devonian of North America".
458:
415:
2533:
2124:"Famennian Phacopidae from the Holy Cross Mountains (Poland)"
1923:
Special
Publication of the National Museum of Natural Science
2228:, with a new species from CaussesâetâVeyran, Montagne Noire"
2224:"Systematic relationships of the blind phacopine trilobite
1834:"The distribution of phacopid trilobites in space and time"
2287:"The phylogeny and evolution of some phacopid trilobites"
1889:. Special Papers in Palaeontology. Vol. 70. Oxford:
1803:. Vol. Part O. Boulder, Colorado/Lawrence, Kansas:
844:
A number of species previously assigned to the genus
578:
species developed from each other, the oldest being
2542:
2425:Schoenemann, Brigitte; Clarkson, Euan N.K. (2013).
2148:Eldredge, N. (1972). "Systematics and evolution of
2158:Bulletin of the American Museum of Natural History
543:, are still widely used among fossil collectors.
487:to camouflage itself in different environments.
537:. However, the previous assigned species, like
373:, with a broader time range described from the
848:have since been transferred to other genera:
8:
531:, the North-American species are now called
2786:Paleozoic life of the Northwest Territories
2117:
2115:
2530:
1790:
1788:
631:currently contains the following species:
146:
125:
31:
2458:
2302:
2045:
2043:
2041:
2039:
2037:
1874:
1872:
1784:
2099:"Repository "Index to Organism Names""
1996:
1986:
605:have been found in the trilobite-rich
2376:"Trilobites in Murchison's "Siluria""
1801:Treatise on Invertebrate Paleontology
7:
2285:Ramskjöld, L.; Werdelin, L. (1991).
2189:(Murchison) and related trilobites"
1914:Linliang Yuan; Liwen Xiang (1997).
1699:Greenops (Neometacanthus) stellifer
2304:10.1111/j.1096-0031.1991.tb00021.x
1059:Trimerocephalus cryptophthalmoides
519:have been erected as subgenera of
25:
1965:. Vol. 4. pp. 399â408.
424:sp. from the Eifelian of Morocco.
2515:
2500:
2486:
2361:Trilobites of Black Cat Mountain
167:
2781:Paleozoic life of New Brunswick
2761:Late Devonian genus extinctions
2716:Fossils of Georgia (U.S. state)
2681:Ordovician trilobites of Europe
837:Species previously assigned to
1707:= generic assignment uncertain
1481:= generic assignment uncertain
1420:= generic assignment uncertain
1412:Trimerocephalus mastophthalmus
1:
2766:Fossil taxa described in 1839
2691:Devonian trilobites of Europe
2686:Silurian trilobites of Europe
2235:Acta Palaeontologica Polonica
2131:Acta Palaeontologica Polonica
1805:Geological Society of America
1688:Trimerocephalus steinachensis
471:There are specimens known of
2751:Ordovician first appearances
2204:(2): 183â207. Archived from
1346:Trimerocephalus lentiginosus
428:The central raised area (or
315:
27:Genus of arthropods (fossil)
2721:Trilobites of South America
2701:Trilobites of North America
2050:Viersen, van, A.P. (2004).
1971:10.18261/8200049639-1975-26
822:Richter & Richter, 1926
385:is often found rolled up ("
2807:
2359:Hansen, George P. (2009).
1749:Trimerocephalus vodorezovi
1716:Podowrinella straitonensis
2771:Paleozoic life of Ontario
2696:Ordovician United Kingdom
2014:Gerry, K. (9 June 2014).
1429:Pseudocryphaeus michelini
1313:Trimerocephalus lacunosus
894:Paciphacops birdsongensis
329:
322:
292:
285:
274:
267:
164:Scientific classification
162:
154:
145:
133:
124:
34:
2791:Paleozoic life of Quebec
2261:"Acuticeps Kayser, 1889"
1589:Acernaspis quadrilineata
1401:Acernaspis marklandensis
1070:Cryphops cryptophthalmus
916:Phacopidina braziliensis
618:Altiplano Cundiboyacense
432:) of the headshield (or
2392:Senckenbergiana Lethaea
2341:: 16â31. Archived from
2326:Corbacho, Joan (2011).
2183:Shergold, J.H. (1966).
1811:Press. pp. 1â560.
1760:Denckmannites volborthi
1534:Phillipsinella parabola
1324:Paciphacops latigenalis
1291:Acernaspis khatangensis
1021:P. cristatus bombifrons
1015:Heliocephalus coronatus
861:Acuticryphops acuticeps
719:Hawle & Corda, 1847
2711:Devonian United States
2706:Silurian United States
1771:Weyerites wocklumeriae
1269:Paciphacops hudsonicus
1032:P. cristatus cristatus
1004:Acastoides constrictus
949:Trimerocephalus caecus
468:
425:
2756:Late Devonian animals
2648:Paleobiology Database
2164:(article 2): 45â114.
2122:Osmolska, H. (1953).
2064:Grondboor & Hamer
1727:Eophacops trapeziceps
1677:Dereimsia sphaericeps
1335:Cryphops latilimbatus
1225:Lochkovella grimbergi
1214:Phacopidella glockeri
1133:Acastocephala macrops
1103:Zeliszkella deshayesi
1081:Eophacops trapeziceps
1054:P. cryptophthalmoides
1048:Paciphacops crossleii
1026:Viaphacops bombifrons
814:Richter & Richter
462:
419:
2526:at Wikimedia Commons
2508:Palaeontology portal
2222:CrĂŽnier, C. (2003).
2097:Global Names Index.
1893:. pp. 331â348.
1832:Ivo ChlupĂĄÄ (1973).
1809:University of Kansas
1795:Moore, R.C. (1959).
1666:Austerops speculator
1655:Dalmanitina socialis
1633:Paciphacops serratus
1622:Struveops schlosseri
1523:Ananaspis orientalis
1258:Prokops hoeninghausi
1192:Chotecops ferdinandi
1037:Viaphacops cristatus
982:Paciphacops claviger
971:Paciphacops cambelli
960:Metacryphaeus caffer
397:Like in all sighted
2741:Fossils of Colombia
2443:2013NatSR...3E1429S
1644:Geesops schlotheimi
1578:Acernaspis pulcella
1556:Acernaspis primaeva
1545:Kloucekia phillipsi
1490:Hadrorachus ocellus
1451:Eldredgeops milleri
1236:Eophacops handwerki
1092:Bouleia dagincourti
993:Dalmanites caudatus
938:Eophacops bulliceps
567:in the present-day
2776:Floresta Formation
2746:Devonian Venezuela
2431:Scientific Reports
2404:10.1007/bf03043651
2265:Global Names Index
2152:(Green, 1832) and
1841:Fossils and Strata
1512:Acernaspis orestes
1379:Monorakos lopatini
1368:Paciphacops logani
1302:Eocryphops kayseri
1280:Nephranops incisus
1247:Lochkovella hanusi
1065:P. cryptophthalmus
872:Acernaspis arctica
769:P. ouarouroutensis
707:Calymene granulata
614:Floresta Formation
469:
463:Reconstruction of
426:
309:Calymene latifrons
276:Calymene latifrons
2736:Devonian Colombia
2663:
2662:
2635:Open Tree of Life
2536:Taxon identifiers
2520:Media related to
2494:Arthropods portal
2451:10.1038/srep01429
2187:Acaste downingiae
2058:Phacops latifrons
2056:[The Myth of
2054:Phacops latifrons
1900:978-0-901702-81-4
1818:978-0-8137-3015-8
1584:P. quadrilineatus
1473:Eophacops musheni
1462:Lochkovella miser
1407:P. mastophthalmus
1181:Lochkovella minor
1176:P. fecundus minor
1170:Ananaspis fecunda
1118:Acaste downingiae
831:
830:F.A. Roemer, 1843
823:
815:
802:
794:
786:
773:
765:
752:
744:
736:
728:
720:
704:
696:
681:
673:
672:Paeckelmann, 1913
669:P. circumspectans
665:
657:
649:
641:
560:species however.
420:Unknown enrolled
413:has 11 segments.
350:
349:
304:
263:
16:(Redirected from
2798:
2726:Devonian Bolivia
2656:
2655:
2643:
2642:
2630:
2629:
2617:
2616:
2604:
2603:
2591:
2590:
2578:
2577:
2576:
2563:
2562:
2561:
2531:
2519:
2510:
2505:
2504:
2503:
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2490:
2473:
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2462:
2422:
2416:
2415:
2386:
2380:
2379:
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2317:
2316:
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2276:
2275:
2273:
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2257:
2251:
2250:
2248:
2246:
2232:
2219:
2213:
2212:
2210:
2193:
2180:
2174:
2173:
2154:Phacops iowensis
2145:
2139:
2138:
2128:
2119:
2110:
2109:
2107:
2105:
2094:
2088:
2078:
2072:
2071:
2047:
2032:
2031:
2028:The Fossil Forum
2011:
2005:
2004:
1998:
1994:
1992:
1984:
1958:
1952:
1951:
1937:
1931:
1930:
1920:
1911:
1905:
1904:
1876:
1867:
1855:
1849:
1848:
1838:
1829:
1823:
1822:
1792:
1711:P. straitonensis
1683:P. steinachensis
1611:Kainops raymondi
1600:Eldredgeops rana
1501:Chotecops opitzi
1418:P. metacernaspis
1396:P. marklandensis
1390:Eophacops mancus
1357:Dianops limbatus
1203:Eophacops glaber
889:P. birdsongensis
883:Ananaspis aspera
829:
821:
813:
800:
792:
784:
777:P. platilegnotor
771:
763:
750:
742:
734:
726:
718:
702:
694:
679:
671:
663:
655:
647:
640:(Phillips, 1841)
639:
527:is the European
298:
258:
251:
238:
225:
212:
172:
171:
150:
129:
119:
56:
40:Temporal range:
32:
21:
18:Phacops cristata
2806:
2805:
2801:
2800:
2799:
2797:
2796:
2795:
2731:Devonian Brazil
2666:
2665:
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2607:
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2320:
2284:
2283:
2279:
2269:
2267:
2259:
2258:
2254:
2244:
2242:
2230:
2226:Trimerocephalus
2221:
2220:
2216:
2208:
2191:
2185:"A revision of
2182:
2181:
2177:
2147:
2146:
2142:
2126:
2121:
2120:
2113:
2103:
2101:
2096:
2095:
2091:
2079:
2075:
2049:
2048:
2035:
2013:
2012:
2008:
1995:
1985:
1981:
1960:
1959:
1955:
1939:
1938:
1934:
1918:
1913:
1912:
1908:
1901:
1891:Wiley-Blackwell
1878:
1877:
1870:
1856:
1852:
1836:
1831:
1830:
1826:
1819:
1794:
1793:
1786:
1781:
1776:
1766:P. wocklumeriae
1567:Prokops prokopi
1440:Kainops microps
1341:P. lentiginosus
1330:P. latilimbatus
1286:P. khatangensis
1253:P. hoeninghausi
1159:Weyerites ensae
911:P. braziliensis
905:Boeckops boecki
842:
834:
785:Kozlowski, 1923
703:(Munster, 1840)
637:P. accipitrinus
626:
603:Phacops salteri
499:. As a result,
493:
457:
395:
375:Late Ordovician
299:(Bronn, 1825) (
281:
278:
257:
249:
236:
223:
210:
166:
120:
118:
117:
112:
107:
102:
97:
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87:
82:
77:
72:
67:
62:
51:
50:
48:
42:Late Ordovician
38:
28:
23:
22:
15:
12:
11:
5:
2804:
2802:
2794:
2793:
2788:
2783:
2778:
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2763:
2758:
2753:
2748:
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2738:
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2728:
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2718:
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2708:
2703:
2698:
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2678:
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2658:
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2644:
2631:
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2605:
2592:
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2548:
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2534:
2528:
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2512:
2511:
2497:
2481:
2480:External links
2478:
2475:
2474:
2437:(1429): 1429.
2417:
2398:(2): 501â515.
2381:
2374:Andrew McRae.
2366:
2351:
2348:on 2014-12-20.
2318:
2277:
2252:
2214:
2211:on 2011-07-16.
2175:
2140:
2111:
2089:
2081:Floresta Fauna
2073:
2052:"De mythe van
2033:
2006:
1997:|journal=
1980:8 2-00-04963-9
1979:
1953:
1932:
1906:
1899:
1868:
1850:
1824:
1817:
1783:
1782:
1780:
1777:
1775:
1774:
1763:
1752:
1741:
1730:
1722:P. trapeziceps
1719:
1708:
1702:
1691:
1680:
1672:P. sphaericeps
1669:
1658:
1647:
1639:P. schlotheimi
1636:
1625:
1614:
1603:
1592:
1581:
1570:
1559:
1548:
1537:
1526:
1515:
1504:
1493:
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1454:
1443:
1432:
1421:
1415:
1404:
1393:
1382:
1371:
1360:
1349:
1338:
1327:
1319:P. latigenalis
1316:
1305:
1294:
1283:
1272:
1261:
1250:
1239:
1228:
1217:
1206:
1195:
1184:
1173:
1162:
1151:
1148:Acaste inflata
1136:
1121:
1106:
1095:
1087:P. dagincourti
1084:
1073:
1062:
1051:
1040:
1029:
1018:
1007:
999:P. constrictus
996:
985:
974:
963:
952:
941:
930:
927:Reedops bronni
919:
908:
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766:
758:
753:
745:
737:
729:
721:
713:
697:
689:
682:
680:Barrande, 1852
674:
666:
658:
656:Barrande, 1846
650:
642:
633:
625:
622:
611:Early Givetian
582:, followed by
492:
489:
456:
453:
447:is covered in
401:, the eyes of
394:
391:
357:is a genus of
348:
347:
346:
345:
340:
335:
327:
326:
320:
319:
312:
311:
290:
289:
283:
282:
279:
272:
271:
265:
264:
247:
243:
242:
234:
230:
229:
221:
217:
216:
208:
204:
203:
198:
194:
193:
188:
184:
183:
178:
174:
173:
160:
159:
152:
151:
143:
142:
131:
130:
122:
121:
113:
108:
103:
98:
93:
88:
83:
78:
73:
68:
63:
58:
57:
39:
26:
24:
14:
13:
10:
9:
6:
4:
3:
2:
2803:
2792:
2789:
2787:
2784:
2782:
2779:
2777:
2774:
2772:
2769:
2767:
2764:
2762:
2759:
2757:
2754:
2752:
2749:
2747:
2744:
2742:
2739:
2737:
2734:
2732:
2729:
2727:
2724:
2722:
2719:
2717:
2714:
2712:
2709:
2707:
2704:
2702:
2699:
2697:
2694:
2692:
2689:
2687:
2684:
2682:
2679:
2677:
2674:
2673:
2671:
2654:
2649:
2645:
2641:
2636:
2632:
2628:
2623:
2619:
2615:
2610:
2606:
2602:
2597:
2593:
2589:
2584:
2580:
2575:
2569:
2565:
2560:
2554:
2550:
2549:
2547:
2545:
2541:
2537:
2532:
2525:
2524:
2518:
2514:
2513:
2509:
2498:
2495:
2489:
2484:
2479:
2470:
2466:
2461:
2456:
2452:
2448:
2444:
2440:
2436:
2432:
2428:
2421:
2418:
2413:
2409:
2405:
2401:
2397:
2393:
2385:
2382:
2377:
2370:
2367:
2362:
2355:
2352:
2344:
2340:
2336:
2329:
2322:
2319:
2314:
2310:
2305:
2300:
2296:
2292:
2288:
2281:
2278:
2266:
2262:
2256:
2253:
2240:
2236:
2229:
2227:
2218:
2215:
2207:
2203:
2199:
2198:
2197:Palaeontology
2190:
2188:
2179:
2176:
2171:
2167:
2163:
2159:
2155:
2151:
2144:
2141:
2136:
2132:
2125:
2118:
2116:
2112:
2100:
2093:
2090:
2086:
2082:
2077:
2074:
2069:
2065:
2061:
2059:
2055:
2046:
2044:
2042:
2040:
2038:
2034:
2029:
2025:
2023:
2019:
2010:
2007:
2002:
1990:
1982:
1976:
1972:
1968:
1964:
1957:
1954:
1950:(4): 498â499.
1949:
1945:
1944:
1943:Palaeontology
1936:
1933:
1928:
1924:
1917:
1910:
1907:
1902:
1896:
1892:
1888:
1887:
1883:
1875:
1873:
1869:
1865:
1861:
1860:
1854:
1851:
1846:
1842:
1835:
1828:
1825:
1820:
1814:
1810:
1806:
1802:
1798:
1791:
1789:
1785:
1778:
1773:
1772:
1767:
1764:
1762:
1761:
1756:
1753:
1751:
1750:
1745:
1744:P. vodorezovi
1742:
1740:
1739:
1738:Kainops veles
1734:
1731:
1729:
1728:
1723:
1720:
1718:
1717:
1712:
1709:
1706:
1703:
1701:
1700:
1695:
1692:
1690:
1689:
1684:
1681:
1679:
1678:
1673:
1670:
1668:
1667:
1662:
1661:P. speculator
1659:
1657:
1656:
1651:
1648:
1646:
1645:
1640:
1637:
1635:
1634:
1629:
1626:
1624:
1623:
1618:
1617:P. schlosseri
1615:
1613:
1612:
1607:
1604:
1602:
1601:
1596:
1593:
1591:
1590:
1585:
1582:
1580:
1579:
1574:
1571:
1569:
1568:
1563:
1560:
1558:
1557:
1552:
1549:
1547:
1546:
1541:
1538:
1536:
1535:
1530:
1527:
1525:
1524:
1519:
1518:P. orientalis
1516:
1514:
1513:
1508:
1505:
1503:
1502:
1497:
1494:
1492:
1491:
1486:
1483:
1480:
1477:
1475:
1474:
1469:
1466:
1464:
1463:
1458:
1455:
1453:
1452:
1447:
1444:
1442:
1441:
1436:
1433:
1431:
1430:
1425:
1422:
1419:
1416:
1414:
1413:
1408:
1405:
1403:
1402:
1397:
1394:
1392:
1391:
1386:
1383:
1381:
1380:
1375:
1372:
1370:
1369:
1364:
1361:
1359:
1358:
1353:
1350:
1348:
1347:
1342:
1339:
1337:
1336:
1331:
1328:
1326:
1325:
1320:
1317:
1315:
1314:
1309:
1306:
1304:
1303:
1298:
1295:
1293:
1292:
1287:
1284:
1282:
1281:
1276:
1273:
1271:
1270:
1265:
1264:P. hudsonicus
1262:
1260:
1259:
1254:
1251:
1249:
1248:
1243:
1240:
1238:
1237:
1232:
1229:
1227:
1226:
1221:
1218:
1216:
1215:
1210:
1207:
1205:
1204:
1199:
1196:
1194:
1193:
1188:
1187:P. ferdinandi
1185:
1183:
1182:
1177:
1174:
1172:
1171:
1166:
1163:
1161:
1160:
1155:
1152:
1150:
1149:
1144:
1140:
1139:P. downingiae
1137:
1135:
1134:
1129:
1125:
1124:P. downingiae
1122:
1120:
1119:
1114:
1110:
1109:P. downingiae
1107:
1105:
1104:
1099:
1096:
1094:
1093:
1088:
1085:
1083:
1082:
1077:
1076:P. cultifrons
1074:
1072:
1071:
1066:
1063:
1061:
1060:
1055:
1052:
1050:
1049:
1044:
1041:
1039:
1038:
1033:
1030:
1028:
1027:
1022:
1019:
1017:
1016:
1011:
1008:
1006:
1005:
1000:
997:
995:
994:
989:
986:
984:
983:
978:
975:
973:
972:
967:
964:
962:
961:
956:
953:
951:
950:
945:
942:
940:
939:
934:
931:
929:
928:
923:
920:
918:
917:
912:
909:
907:
906:
901:
898:
896:
895:
890:
887:
885:
884:
879:
876:
874:
873:
868:
865:
863:
862:
858:
855:
852:
851:
849:
847:
840:
836:
828:
825:
820:
817:
812:
809:
807:
806:P. sternbergi
804:
799:
796:
791:
790:P. sartenaeri
788:
783:
780:
778:
775:
772:CrĂŽnier, 2018
770:
767:
762:
759:
757:
754:
751:(Bronn, 1825)
749:
746:
743:Alberti, 1968
741:
738:
733:
730:
725:
722:
717:
714:
712:
711:P. posidoniae
708:
701:
700:P. granulatus
698:
693:
690:
688:
687:
683:
678:
675:
670:
667:
664:Alberti, 1983
662:
659:
654:
651:
648:Alberti, 1983
646:
643:
638:
635:
634:
632:
630:
623:
621:
619:
615:
612:
608:
604:
599:
597:
593:
592:P. sartenaeri
589:
585:
581:
577:
573:
570:
566:
561:
559:
555:
551:
546:
542:
541:
536:
535:
530:
526:
522:
518:
514:
510:
506:
502:
498:
490:
488:
486:
481:
479:
474:
466:
461:
454:
452:
450:
446:
442:
437:
435:
431:
423:
418:
414:
412:
408:
404:
400:
392:
390:
388:
384:
380:
376:
372:
368:
364:
361:in the order
360:
356:
355:
344:
341:
339:
336:
334:
331:
330:
328:
325:
321:
318:
317:
310:
307:
302:
297:
294:
293:
291:
288:
284:
277:
273:
270:
266:
261:
256:
255:
248:
245:
244:
241:
235:
232:
231:
228:
222:
219:
218:
215:
209:
206:
205:
202:
199:
196:
195:
192:
189:
186:
185:
182:
179:
176:
175:
170:
165:
161:
157:
153:
149:
144:
140:
137:sp. from the
136:
132:
128:
123:
116:
111:
106:
101:
96:
91:
86:
81:
76:
71:
66:
61:
55:
52:457â360
47:
46:Late Devonian
43:
37:
33:
30:
19:
2543:
2522:
2434:
2430:
2420:
2395:
2391:
2384:
2369:
2363:. iUniverse.
2360:
2354:
2343:the original
2338:
2334:
2321:
2294:
2290:
2280:
2268:. Retrieved
2264:
2255:
2243:. Retrieved
2238:
2234:
2225:
2217:
2206:the original
2201:
2195:
2186:
2178:
2161:
2157:
2153:
2150:Phacops rana
2149:
2143:
2134:
2130:
2102:. Retrieved
2092:
2076:
2067:
2063:
2057:
2053:
2027:
2021:
2017:
2009:
1962:
1956:
1947:
1941:
1935:
1926:
1922:
1909:
1885:
1881:
1858:
1853:
1844:
1840:
1827:
1796:
1769:
1765:
1758:
1755:P. volborthi
1754:
1747:
1743:
1736:
1732:
1725:
1721:
1714:
1710:
1704:
1697:
1694:P. stellifer
1693:
1686:
1682:
1675:
1671:
1664:
1660:
1653:
1649:
1642:
1638:
1631:
1627:
1620:
1616:
1609:
1605:
1598:
1594:
1587:
1583:
1576:
1573:P. pulcellus
1572:
1565:
1561:
1554:
1551:P. primaevus
1550:
1543:
1540:P. phillipsi
1539:
1532:
1529:P. parabolus
1528:
1521:
1517:
1510:
1506:
1499:
1495:
1488:
1484:
1478:
1471:
1467:
1460:
1456:
1449:
1445:
1438:
1434:
1427:
1424:P. michelini
1423:
1417:
1410:
1406:
1399:
1395:
1388:
1384:
1377:
1373:
1366:
1362:
1355:
1351:
1344:
1340:
1333:
1329:
1322:
1318:
1311:
1308:P. lacunosus
1307:
1300:
1296:
1289:
1285:
1278:
1274:
1267:
1263:
1256:
1252:
1245:
1241:
1234:
1231:P. handwerki
1230:
1223:
1220:P. grimbergi
1219:
1212:
1208:
1201:
1197:
1190:
1186:
1179:
1175:
1168:
1164:
1157:
1153:
1146:
1142:
1138:
1131:
1127:
1123:
1116:
1112:
1108:
1101:
1098:P. deshayesi
1097:
1090:
1086:
1079:
1075:
1068:
1064:
1057:
1053:
1046:
1043:P. crossleii
1042:
1035:
1031:
1024:
1020:
1013:
1010:P. coronatus
1009:
1002:
998:
991:
987:
980:
976:
969:
965:
958:
954:
947:
943:
936:
933:P. bulliceps
932:
925:
921:
914:
910:
903:
899:
892:
888:
881:
877:
870:
866:
859:
854:P. acuticeps
853:
845:
843:
838:
826:
819:P. wedekindi
818:
810:
805:
801:Kielan, 1954
797:
793:Struve, 1985
789:
781:
776:
768:
760:
755:
748:P. latifrons
747:
739:
735:Struve, 1970
731:
723:
715:
710:
706:
699:
695:Struve, 1970
691:
684:
676:
668:
660:
653:P. breviceps
652:
645:P. algericus
644:
636:
628:
627:
620:, Colombia.
602:
600:
591:
590:and finally
588:P. latifrons
587:
583:
579:
575:
562:
557:
553:
550:P. latifrons
549:
544:
540:Phacops rana
538:
532:
529:P. latifrons
528:
525:type species
520:
516:
512:
508:
504:
500:
496:
494:
485:Phacops rana
484:
476:
473:Phacops rana
472:
470:
464:
438:
427:
421:
410:
402:
396:
382:
353:
352:
351:
343:Somatrikopon
342:
338:Somatrikelon
337:
332:
313:
308:
296:P. latifrons
295:
275:
269:Type species
253:
252:
155:
134:
35:
29:
2609:iNaturalist
2568:Wikispecies
2270:23 December
2085:Fossilworks
2022:Eldredgeops
1864:Fossilworks
1705:P. stokesii
1650:P. socialis
1628:P. serratus
1606:P. raymondi
1374:P. lopatini
1352:P. limbatus
1209:P. glockeri
1165:P. fecundus
1143:Îł. inflatus
1113:α. vulgaris
988:P. caudatus
977:P. claviger
966:P. cambelli
867:P. arcticus
798:P. sobolevi
761:P. modestus
756:P. maurulus
732:P. imitator
724:P. iowensis
692:P. fragosus
686:P. fecundus
661:P. chlupaci
607:Late Emsian
601:Fossils of
584:P. fragosus
580:P. imitator
563:During the
554:Eldredgeops
545:Eldredgeops
534:Eldredgeops
509:Paciphacops
445:exoskeleton
393:Description
280:Bronn, 1825
141:of Morocco
2676:Phacopidae
2670:Categories
2335:Batelleria
2291:Cladistics
2245:4 November
2241:(1): 55â70
2104:4 November
1886:come alive
1847:: 399â408.
1779:References
1562:P. prokopi
1507:P. orestes
1485:P. ocellus
1468:P. musheni
1446:P. milleri
1435:P. microps
1297:P. kayseri
1275:P. incisus
1128:ÎČ. macrops
827:P. zinkeni
782:P. salteri
740:P. kockeli
727:Delo, 1935
677:P. degener
596:Phacopinae
574:, several
556:and other
517:Viaphacops
455:Camouflage
367:Phacopidae
359:trilobites
333:Portlockia
240:Phacopidae
201:Arthropoda
2412:131283519
2297:: 29â74.
2170:2246/1095
1999:ignored (
1989:cite book
1496:P. opitzi
1385:P. mancus
1363:P. logani
1242:P. hanusi
1198:P. glaber
955:P. caffer
944:P. caecus
922:P. bronni
900:P. boecki
716:P. hoseri
705:synonyms
505:Chotecops
449:tubercles
399:Phacopina
387:volvation
365:, family
363:Phacopida
227:Phacopida
214:Trilobita
187:Kingdom:
181:Eukaryota
2553:Wikidata
2469:23492459
2313:85076301
2070:: 66â68.
1733:P. veles
1479:P. nudus
1457:P. miser
1154:P. ensae
878:P. asper
811:P. turco
764:Barrande
572:Ardennes
565:Eifelian
501:Boeckops
491:Taxonomy
478:Greenops
441:pygidium
434:cephalon
430:glabella
379:detritus
371:Devonian
324:Synonyms
316:see text
233:Family:
197:Phylum:
191:Animalia
177:Domain:
158:sp. eye
139:Eifelian
2640:4705831
2627:1297042
2601:7635993
2574:Phacops
2544:Phacops
2523:Phacops
2460:3596982
2439:Bibcode
2018:Phacops
1884:Phacops
1859:Phacops
1595:P. rana
846:Phacops
839:Phacops
629:Phacops
624:Species
616:of the
586:, then
576:Phacops
569:Belgian
558:Phacops
521:Phacops
513:Prokops
497:Phacops
465:Phacops
422:Phacops
411:Phacops
403:Phacops
383:Phacops
354:Phacops
306:synonym
287:Species
260:Emmrich
254:Phacops
246:Genus:
220:Order:
207:Class:
156:Phacops
135:Phacops
36:Phacops
2614:317833
2559:Q44129
2467:
2457:
2410:
2311:
2060:]"
1977:
1897:
1815:
1807:&
480:boothi
407:thorax
262:, 1839
2653:21701
2622:IRMNG
2408:S2CID
2346:(PDF)
2331:(PDF)
2309:S2CID
2231:(PDF)
2209:(PDF)
2192:(PDF)
2127:(PDF)
1919:(PDF)
1837:(PDF)
1141:var.
1126:var.
1111:var.
409:) in
2596:GBIF
2588:6MBF
2465:PMID
2272:2013
2247:2013
2137:(2).
2106:2013
2087:.org
2020:vs.
2001:help
1975:ISBN
1895:ISBN
1866:.org
1813:ISBN
515:and
314:and
301:type
60:Preê
2583:CoL
2455:PMC
2447:doi
2400:doi
2299:doi
2166:hdl
2162:147
2083:at
2068:3/4
1967:doi
1862:at
609:to
2672::
2650::
2637::
2624::
2611::
2598::
2585::
2570::
2555::
2463:.
2453:.
2445:.
2433:.
2429:.
2406:.
2396:79
2394:.
2339:16
2337:.
2333:.
2307:.
2293:.
2289:.
2263:.
2239:48
2237:.
2233:.
2200:.
2194:.
2160:.
2133:.
2129:.
2114:^
2066:.
2062:.
2036:^
2026:.
1993::
1991:}}
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