| 词条 | Cynthiacetus |
| 释义 |
| fossil_range = Late Eocene ~{{Fossil range|40.4|33.9}} | image = Museum of Natural History Cynthiacetus.jpg | image_caption = Skeleton at the MNHN, Paris | taxon = Cynthiacetus | authority = {{Harvnb|Uhen|2005}} | subdivision_ranks = Species | subdivision =
}}Cynthiacetus is an extinct genus of basilosaurid early whale that lived during the Late Eocene (Bartonian-Priabonian, {{Mya|40.4|33.9}}.)[1] Specimens have been found in the southeastern United States and Peru (Otuma Formation).[2] DescriptionThe skull of Cynthiacetus was similar in size and morphology to that of Basilosaurus, but Cynthiacetus lacked the elongated vertebrae of Basilosaurus. {{Harvnb|Uhen|2005}} erected the genus to avoid the nomen dubium Pontogeneus (which was based on poorly described and now vanished specimens).[3] Cynthiacetus was smaller than Masracetus.[4] The South American species C. peruvianus, the first archaeocete to be described on that continent, mainly differs from C. maxwelli in the number of cuspids in the lower premolars, but it also has the greatest numbers of thoracic vertebrae (20).[2] {{clearleft}}References{{Portal|Cetaceans|Paleogene|Paleontology|Prehistory of North America|Prehistory of South America}}{{Commons category|Cynthiacetus}}1. ^{{Paleodb|63144|Cynthiacetus maxwelli}}. Retrieved July 2013. 2. ^1 {{Harvnb|Martínez-Cáceres|Muizon|2011|loc=Abstract}} 3. ^{{Harvnb|Uhen|2008|p=93}} 4. ^{{Harvnb|Gingerich|2007|p=375}} Bibliography{{Refbegin}}
| last = Gingerich | first = Philip D | title=Stromerius nidensis, new archaeocete (Mammalia, Cetacea) from the Upper Eocene Qasr El-Sagha Formation, Fayum, Egypt | year = 2007 | journal = Contributions from the Museum of Paleontology | volume = 31 | issue = 13 | pages = 363–78 | url = http://deepblue.lib.umich.edu/bitstream/2027.42/57499/1/Vol%2031%20No%2013%20final%2012-19-07.pdf | oclc = 214233870 | ref = harv}}
| last1 = Martínez-Cáceres | first1 = Manuel | last2 = Muizon | first2 = Christian, de | title = A new basilosaurid (Cetacea, Pelagiceti) from the Late Eocene to Early Oligocene Otuma Formation of Peru | year = 2011 | journal = Comptes Rendus Palevol | volume = 10 | pages = 517–26 | doi = 10.1016/j.crpv.2011.03.006 | oclc = 802202947 | ref = harv}}
| last = Uhen | first = Mark D. | title = A new genus and species of archaeocete whale from Mississippi | year = 2005 | journal = Southeastern Geology | volume = 43 | issue = 3 | pages = 157–72 | ref = harv}}
| last1 = Uhen | first1 = Mark D. | chapter = Basilosaurids | pages = 91–4 | editor1-last = Perrin | editor1-first = William F. | editor2-last = Wursig | editor2-first = Bernd; J. | editor3-last = Thewissen | editor3-first= J.G.M. | title = Encyclopedia of Marine Mammals | edition = 2 | year = 2008 | publisher = Academic Press | url = https://books.google.com/books?id=2rkHQpToi9sC&pg=PA93 | isbn = 978-0-12-373553-9 | ref = harv}}{{Refend}}{{Archaeoceti}}{{Taxonbar|from=Q1064353}}{{paleo-whale-stub}} 12 : Basilosauridae|Prehistoric cetacean genera|Eocene mammals of North America|Paleogene United States|Fossils of Georgia (U.S. state)|Paleontology in Mississippi|Fossils of North Carolina|Eocene mammals of South America|Tinguirirican|Paleogene Peru|Fossils of Peru|Fossil taxa described in 2005 |
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