Chrysocetus (from Greek chrysous, "golden", and ketos, "whale", in reference to the gold-colored bones of the type specimen)[1] is a genus of extinct early whale known from Late Eocene-aged fossils of the eastern United States and western Africa.
A second species, Chrysocetus fouadassii, is known from Bartonian-age deposits in the Western Sahara (25°06′N13°54′W / 25.1°N 13.9°W / 25.1; -13.9, paleocoordinates 22°24′N17°12′W / 22.4°N 17.2°W / 22.4; -17.2).[3] The species name honors the collector M'Barek Fouadassi, who led a paleontological expedition to the region in 2014. C. fouadassii is known from fragmentary specimens of four individuals. It possessed teeth and vertebrae similar to those of C. healyorum but differs by having a longer humerus, 22.5 cm without the proximal epiphysis. The same bone part of C. healyorum is only 15.6 cm.[4]
Descriptionedit
Chrysocetus is similar to Zygorhiza except that it lacks the denticles on the cingula of the upper premolars characteristic of Zygorhiza. The premolars of Chrysocetus have smoother enamel than other dorudontines and are more gracile than those of Dorudon.[1]
Paleoecologyedit
C. fouadassii lived in the zone of a shallow shelf with other archaeocetes such as Platyosphys, Eocetus, Pappocetus and indeterminate protocetids. Shark teeth and fish bones were found in the same formation.[4]
^Santee Portland Cement Co. quarry (Eocene of the United States) in the Paleobiology Database. Retrieved September 2023.
^Gueran (Eocene of Western Sahara) in the Paleobiology Database. Retrieved September 2023.
^ abP. D. Gingerich and S. Zouhri (August 2015). "New fauna of archaeocete whales (Mammalia, Cetacea) from the Bartonian middle Eocene of southern Morocco". Journal of African Earth Sciences. 111: 273–286. Bibcode:2015JAfES.111..273G. doi:10.1016/j.jafrearsci.2015.08.006.
Referencesedit
Uhen, Mark D.; Gingerich, Philip D. (January 2001). "New genus of dorudontine archaeocete (Cetacea) from the middle-to-late Eocene of South Carolina". Marine Mammal Science. 17 (1): 1–34. doi:10.1111/j.1748-7692.2001.tb00979.x. hdl:2027.42/73005. OCLC 204061291.
This prehistoric cetacean-related article is a stub. You can help Wikipedia by expanding it.
chrysocetus, from, greek, chrysous, golden, ketos, whale, reference, gold, colored, bones, type, specimen, genus, extinct, early, whale, known, from, late, eocene, aged, fossils, eastern, united, states, western, africa, temporal, range, late, eocene, preꞒ, li. Chrysocetus from Greek chrysous golden and ketos whale in reference to the gold colored bones of the type specimen 1 is a genus of extinct early whale known from Late Eocene aged fossils of the eastern United States and western Africa ChrysocetusTemporal range Late Eocene PreꞒ Ꞓ O S D C P T J K Pg N Life restoration of Chrysocetus healyorumScientific classificationDomain EukaryotaKingdom AnimaliaPhylum ChordataClass MammaliaOrder ArtiodactylaInfraorder CetaceaFamily BasilosauridaeSubfamily DorudontinaeGenus ChrysocetusUhen amp Gingerich 2001SpeciesChrysocetus fouadassiiGingerich and Zouhri 2015 Chrysocetus healyorumUhen and Gingerich 2001 type Contents 1 Taxonomy 2 Description 3 Paleoecology 4 Notes 5 ReferencesTaxonomy editThe type species Chrysocetus healyorum is based on a single subadult specimen from the late middle or early late Eocene of Orangeburg County South Carolina 33 18 N 80 24 W 33 3 N 80 4 W 33 3 80 4 paleocoordinates 33 18 N 72 30 W 33 3 N 72 5 W 33 3 72 5 2 The holotype SCSM 87 195 consists of a partial skull with lower jaws ten teeth and the hyoid apparatus 21 vertebrae some ribs and a sternum a partial left forelimb and partial innominates 1 A second species Chrysocetus fouadassii is known from Bartonian age deposits in the Western Sahara 25 06 N 13 54 W 25 1 N 13 9 W 25 1 13 9 paleocoordinates 22 24 N 17 12 W 22 4 N 17 2 W 22 4 17 2 3 The species name honors the collector M Barek Fouadassi who led a paleontological expedition to the region in 2014 C fouadassii is known from fragmentary specimens of four individuals It possessed teeth and vertebrae similar to those of C healyorum but differs by having a longer humerus 22 5 cm without the proximal epiphysis The same bone part of C healyorum is only 15 6 cm 4 Description editChrysocetus is similar to Zygorhiza except that it lacks the denticles on the cingula of the upper premolars characteristic of Zygorhiza The premolars of Chrysocetus have smoother enamel than other dorudontines and are more gracile than those of Dorudon 1 Paleoecology editC fouadassii lived in the zone of a shallow shelf with other archaeocetes such as Platyosphys Eocetus Pappocetus and indeterminate protocetids Shark teeth and fish bones were found in the same formation 4 Notes edit a b c Uhen amp Gingerich 2001 p 3 Santee Portland Cement Co quarry Eocene of the United States in the Paleobiology Database Retrieved September 2023 Gueran Eocene of Western Sahara in the Paleobiology Database Retrieved September 2023 a b P D Gingerich and S Zouhri August 2015 New fauna of archaeocete whales Mammalia Cetacea from the Bartonian middle Eocene of southern Morocco Journal of African Earth Sciences 111 273 286 Bibcode 2015JAfES 111 273G doi 10 1016 j jafrearsci 2015 08 006 References editUhen Mark D Gingerich Philip D January 2001 New genus of dorudontine archaeocete Cetacea from the middle to late Eocene of South Carolina Marine Mammal Science 17 1 1 34 doi 10 1111 j 1748 7692 2001 tb00979 x hdl 2027 42 73005 OCLC 204061291 nbsp This prehistoric cetacean related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Chrysocetus amp oldid 1217175663, wikipedia, wiki, book, books, library,
