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Savage, R. J. G.; Domning, D. P.; Thewissen, J. G. M. (1994). "Fossil
Sirenia of the West Atlantic and Caribbean Region. V. the Most Primitive Known Sirenian, Prorastomus sirenoides Owen, 1855".
644:
Barry Cox, Colin
Harrison, R. J. G. Savage, and Brian Gardiner. (1999): The Simon & Schuster Encyclopedia of Dinosaurs and Prehistoric Creatures: A Visual Who's Who of Prehistoric Life.
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400:, pointed to the origin of Sirenia as being in the New World rather than the Old World as was previously thought. However, the modern understanding of
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658:, Owen) from the island of Jamaica. The Quarterly journal of the Geological Society of London, 11, pp. 541–543.
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and the shape of its snout, it fed on soft plants. The snout is long, narrow, and, at the tip, bulbous. The
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was predominantly terrestrial, judging from the structure of its skull. Judging from its crown-shaped
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are smaller than usual for sirenians, though, as in other sirenians, it had a pronounced
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420:. Another specimen was found in 1989 in the same formation, USNM 437769, comprising the
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The
Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals
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as a clade that originally diversified in Africa overturns this idea. The
306:), mouth, refers to the lower jaw of the animal "resembling the prow of a
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David Norman. (2001): The Big Book Of
Dinosaurs. Pg. 348, Welcome Books.
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While modern sirenians are fully aquatic, the 1.5-metre (5 ft)
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is well developed, indicating it had a good sense of smell. The
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Richard Owen. (1855): On the fossil skull of a mammal (
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593:"The earliest known fully quadrupedal sirenian"
472:specimen had one too before being eroded away.
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396:in 1855, and, being found in Jamaica in the
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570:. London: Marshall Editions. p. 229.
408:, BMNH 44897, comprises a skull, jaw, and
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448:are larger than other sirenians. The
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1505:Prehistoric monotypic mammal genera
424:, a tusk, vertebrae fragments, and
374:. These two species are the oldest
259:is an extinct species of primitive
533:Journal of Vertebrate Paleontology
350:, however this was unjustified as
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115:
1490:Eocene mammals of North America
1435:This article about prehistoric
553:10.1080/02724634.1994.10011569
267:Epoch 40 million years ago in
1:
1535:Prehistoric afrotherian stubs
1515:Fossil taxa described in 1855
1530:Prehistoric placental genera
1443:. You can help Knowledge by
1551:
1510:Taxa named by Richard Owen
1422:
335:meaning "mouth." In 1892,
298:
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231:
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112:Scientific classification
110:
101:
23:
566:Palmer, D., ed. (1999).
16:Extinct genus of mammals
591:Domning, D. P. (2001).
385:The first specimen was
354:is masculine in Latin.
656:Prorastomus sirenoïdes
498:Evolution of sirenians
398:Yellow Limestone Group
263:that lived during the
256:Prorastomus sirenoides
238:Prorastomus sirenoides
1392:Paleobiology Database
468:, it is possible the
1500:Transitional fossils
646:Simon & Schuster
609:2001Natur.413..625D
545:1994JVPal..14..427S
490:Paleontology portal
328:meaning "prow" and
283:, a combination of
1525:Fossils of Jamaica
217:P. sirenoides
1520:Paleogene Jamaica
1452:
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1379:Open Tree of Life
1293:Taxon identifiers
1284:
1283:
1271:
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946:
945:
603:(6856): 625–627.
406:holotype specimen
279:The generic name
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205:
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1495:Eocene sirenians
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394:Sir Richard Owen
378:, dating to the
342:respelled it as
340:Richard Lydekker
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29:Temporal range:
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348:feminine ending
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1201:
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1174:
1171:Culebratherium
1164:
1154:
1144:
1134:
1123:
1121:
1115:
1114:
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1111:
1104:
1096:
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1092:Hydrodamalinae
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539:(3): 427–449.
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466:sagittal crest
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414:neck vertebrae
391:paleontologist
364:of the family
360:is one of two
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1181:Dioplotherium
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1173:
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1155:
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1141:Callistosiren
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1038:Paralitherium
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1028:Metaxytherium
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805:Prorastomidae
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791:Sobrarbesiren
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454:frontal bones
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383:
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366:Prorastomidae
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226:Binomial name
223:
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182:Prorastomidae
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100:
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88:
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78:
73:
68:
63:
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43:
38:
32:Middle Eocene
26:
22:
19:
1445:expanding it
1434:
1300:
1256:
1246:
1236:
1226:
1216:
1206:
1196:
1189:
1179:
1169:
1161:Corystosiren
1159:
1151:Crenatosiren
1149:
1139:
1131:Bharatisiren
1129:
1108:Hydrodamalis
1106:
1099:
1076:
1066:
1056:
1046:
1036:
1026:
1018:Kaupitherium
1016:
1008:Lentiarenium
1006:
996:
986:
976:
966:
935:
928:
918:
908:Trichechinae
895:
890:Anomotherium
888:
881:Miosireninae
869:Trichechidae
856:
849:
842:
820:
819:
812:
789:
781:Prototherium
779:
769:
759:
733:Paenungulata
728:
722:Superorder:
655:
600:
596:
586:
567:
561:
536:
532:
502:
469:
461:
437:
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422:frontal bone
384:
369:
368:, the other
357:
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280:
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255:
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216:
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195:
194:
24:
18:
1331:Prorastomus
1325:Wikispecies
1301:Prorastomus
1218:Kutchisiren
1058:Prohalicore
1048:Priscosiren
988:Halitherium
978:Caribosiren
920:Potamosiren
821:Prorastomus
771:Eotheroides
470:Prorastomus
450:nasal ridge
446:nasal bones
438:Prorastomus
432:Description
358:Prorastomus
321:comes from
319:Prorastomus
281:Prorastomus
196:Prorastomus
25:Prorastomus
1484:Categories
1437:Afrotheria
1208:Italosiren
1119:Dugonginae
1068:Stegosiren
968:Anisosiren
952:Dugongidae
937:Trichechus
858:Protosiren
724:Afrotheria
511:References
458:brow ridge
402:Afrotheria
344:Prorastoma
337:naturalist
1316:Q27057242
1258:Xenosiren
1238:Norosiren
1228:Nanosiren
1191:Domningia
1101:Dusisiren
1078:Sirenavus
998:Indosiren
851:Libysiren
814:Pezosiren
704:Kingdom:
504:Pezosiren
462:Pezosiren
418:braincase
387:described
376:sirenians
371:Pezosiren
210:Species:
135:Kingdom:
129:Eukaryota
1310:Wikidata
1248:Rytiodus
897:Miosiren
718:Mammalia
712:Chordata
710:Phylum:
706:Animalia
693:Sirenian
633:22005691
625:11675784
476:See also
460:. Since
275:Taxonomy
261:sirenian
175:Family:
159:Mammalia
149:Chordata
145:Phylum:
139:Animalia
125:Domain:
1410:1458168
1384:4943227
1371:1018823
1358:3239676
1345:4529066
930:Ribodon
844:Ashokia
761:Eosiren
744:Sirenia
716:Class:
605:Bibcode
541:Bibcode
412:of the
346:with a
269:Jamaica
235:†
214:†
188:Genus:
169:Sirenia
165:Order:
155:Class:
1198:Dugong
695:genera
631:
623:
597:Nature
574:
464:has a
442:molars
380:Eocene
362:genera
352:stomus
333:stomus
308:wherry
265:Eocene
247:, 1855
204:, 1855
1439:is a
1405:WoRMS
1397:36895
1366:IRMNG
729:Clade
629:S2CID
410:atlas
330:Latin
326:prora
323:Greek
317:name
315:genus
304:stoma
299:στόμα
294:prōra
289:πρῷρα
285:Greek
1441:stub
1353:GBIF
621:PMID
572:ISBN
426:ribs
313:The
245:Owen
202:Owen
37:PreꞒ
1340:EoL
613:doi
601:413
549:doi
389:by
310:".
1486::
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627:.
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547:.
537:14
535:.
519:^
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271:.
87:Pg
1472:e
1465:t
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1254:†
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1234:†
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757:†
685:e
678:t
671:v
648:.
635:.
615::
607::
580:.
555:.
551::
543::
302:(
292:(
192:†
179:†
92:N
82:K
77:J
72:T
67:P
62:C
57:D
52:S
47:O
42:Ꞓ
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