| 词条 | Masracetus |
| 释义 |
| fossil_range = {{Temporal range|37.2|33.9}} | image = Masracetus.jpg | image_caption = Restoration | taxon = Masracetus | authority = {{Harvnb|Gingerich|2007}} | subdivision_ranks = Species | subdivision =
}}Masracetus (from Arabic Masr, "Egypt", and Greek ketos, "whale")[1] is an extinct genus of basilosaurid ancient whale known from the Late Eocene (Priabonian, {{Mya|37.2|33.9}}) of Egypt.[2]Masracetus was briefly described in an addendum by {{Harvnb|Gingerich|2007}} and is known from just an assemblage of vertebrae and a poorly reconstructed skull from 1908. The lumbar vertebrae are large but relatively short (anteroposteriorly) compared to those of other archaeocetes; the diameter is almost the same as for Basilosaurus isis but the length is less than half of the latter. Masracetus is larger than Cynthiacetus.[3] The species name honours Richard Markgraf, palaeontologist Ernst Stromer's fossil collector, who collected the type specimen in 1905.[1] Masracetus' type locality is the Birket Qarun Formation in Dimê ({{Coord|29.5|30.7|display=inline}}, paleocoordinates {{Coord|24.9|26.6|display=inline}}) north of lake Birket Qarun,[4] but specimens have also been found in the Qattara Depression and Fayum.[5][6][7][8]Notes1. ^1 {{Harvnb|Gingerich|2007|loc=Etymology, p. 375}} 2. ^{{Paleodb|118888|Masracetus}}. Retrieved July 2013. 3. ^{{Harvnb|Gingerich|2007|p=375}} 4. ^{{Paleodb|collection|79679|Dimeh (Eocene of Egypt)}}. Retrieved July 2013. 5. ^{{Paleodb|118889|Masracetus markgrafi}}. Retrieved July 2013. 6. ^{{Paleodb|collection|96953|Qattara Depression (Eocene of Egypt)}}. Retrieved July 2013. 7. ^{{Paleodb|collection|96952|Minqar Tibaghbagh (Eocene of Egypt)}}. Retrieved July 2013. 8. ^{{Paleodb|collection|13403|Minqar el-Hut (Eocene of Egypt)}}. Retrieved July 2013. References{{Wikispecies|Masracetus}}{{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}}{{Refend}}{{Archaeoceti}}{{Taxonbar|from=Q6005481}}{{paleo-whale-stub}} 4 : Basilosauridae|Prehistoric cetacean genera|Fossil taxa described in 2007|Eocene mammals of Africa |
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