The teeth of Hoplocetus are massive (95–150 mm in length; 27–47 in maximum diameter), robust and have a short enamel cap on the crowns.[3] They are somewhat larger than those of modern orcas[4] but considerably smaller than those of macroraptorial sperm whales, such as Zygophyseter, as well as those of Scaldicetus caretti.[5] They display a large degree of abrasion, suggesting a highly predatory niche comparable to that of modern orcas.[3] The genus of the latter, Orcinus, first appears in the middle Pliocene and it may have eventually replaced Hoplocetus.[3]
These teeth features also characterize the other extinct toothed whale genera, Diaphorocetus, Idiorophus and Scaldicetus, sometimes placed with Hoplocetus in the subfamily Hoplocetinae.[6] However, some of these taxa are fragmentary and have been used as wastebasket taxa for non-diagnostic material of stem physeteroids.
Referencesedit
^ ab"Hoplocetus in the Paleobiology Database". Fossilworks. Retrieved 17 December 2021.
^ abcdeHampe, O. (2006). "Middle/late Miocene hoplocetine sperm whale remains (Odontoceti: Physeteridae) of North Germany with an emended classification of the Hoplocetinae". Fossil Record. 9 (1): 61–86. doi:10.1002/mmng.200600002.
^Bradford, A. (2014-11-20). "Orcas: Facts About Killer Whales". Live Science. Retrieved 2018-11-12.
^Reumer, J. W. F.; Mens, T. H.; Post, K. (2017). "New Finds of Giant Raptorial Sperm Whale Teeth (Cetacea, Physeteroidea) from the Westerschelde Estuary (Province of Zeeland, the Netherlands)" (PDF). Deinsea. 17: 32–38. Retrieved 2018-11-12.
^Toscano, A.; Abad, M.; Ruiz, F.; Muñiz, F.; Álvarez, G.; García, E.; Caro, J. A. (2013). "Nuevos Restos de Scaldicetus (Cetacea, Odontoceti, Physeteridae) del Mioceno Superior, Sector Occidental de la Cuenca del Guadalquivir (Sur de España)" [New Remains of Scaldicetus (Cetacea, Odontoceti, Physeteridae) from the Upper Miocene, Western Sector of the Guadalquivir Basin]. Revista Mexicana de Ciencias Geológicas (in Spanish). 30 (2).
January 01, 1970
hoplocetus, extinct, genus, raptorial, cetacean, sperm, whale, superfamily, physeteroidea, remains, have, been, found, miocene, belgium, france, germany, malta, pliocene, belgium, france, pleistocene, united, kingdom, south, carolina, temporal, range, middle, . Hoplocetus is an extinct genus of raptorial cetacean of the sperm whale superfamily Physeteroidea 3 Its remains have been found in the Miocene of Belgium France Germany and Malta the Pliocene of Belgium and France and the Pleistocene of the United Kingdom and South Carolina 1 HoplocetusTemporal range Middle Miocene Early Pleistocene 16 0 1 8 Ma PreꞒ Ꞓ O S D C P T J K Pg N 1 Scientific classification Domain Eukaryota Kingdom Animalia Phylum Chordata Class Mammalia Order Artiodactyla Infraorder Cetacea Superfamily Physeteroidea Family incertae sedis Genus HoplocetusGervais 1852 Species H borgerhoutensis du Bus 1872 H crassidens Gervais 1852 type H curvidens Gervais 1852 H obesus Leidy 1868 2 H ritzi Hampe 2006 3 Dentition editThe teeth of Hoplocetus are massive 95 150 mm in length 27 47 in maximum diameter robust and have a short enamel cap on the crowns 3 They are somewhat larger than those of modern orcas 4 but considerably smaller than those of macroraptorial sperm whales such as Zygophyseter as well as those of Scaldicetus caretti 5 They display a large degree of abrasion suggesting a highly predatory niche comparable to that of modern orcas 3 The genus of the latter Orcinus first appears in the middle Pliocene and it may have eventually replaced Hoplocetus 3 These teeth features also characterize the other extinct toothed whale genera Diaphorocetus Idiorophus and Scaldicetus sometimes placed with Hoplocetus in the subfamily Hoplocetinae 6 However some of these taxa are fragmentary and have been used as wastebasket taxa for non diagnostic material of stem physeteroids References edit a b Hoplocetus in the Paleobiology Database Fossilworks Retrieved 17 December 2021 Leidy J 1868 Notice of Some Extinct Cetaceans Proceedings of the Academy of Natural Sciences of Philadelphia 20 196 197 Retrieved 2018 11 12 a b c d e Hampe O 2006 Middle late Miocene hoplocetine sperm whale remains Odontoceti Physeteridae of North Germany with an emended classification of the Hoplocetinae Fossil Record 9 1 61 86 doi 10 1002 mmng 200600002 Bradford A 2014 11 20 Orcas Facts About Killer Whales Live Science Retrieved 2018 11 12 Reumer J W F Mens T H Post K 2017 New Finds of Giant Raptorial Sperm Whale Teeth Cetacea Physeteroidea from the Westerschelde Estuary Province of Zeeland the Netherlands PDF Deinsea 17 32 38 Retrieved 2018 11 12 Toscano A Abad M Ruiz F Muniz F Alvarez G Garcia E Caro J A 2013 Nuevos Restos de Scaldicetus Cetacea Odontoceti Physeteridae del Mioceno Superior Sector Occidental de la Cuenca del Guadalquivir Sur de Espana New Remains of Scaldicetus Cetacea Odontoceti Physeteridae from the Upper Miocene Western Sector of the Guadalquivir Basin Revista Mexicana de Ciencias Geologicas in Spanish 30 2 Retrieved from https en wikipedia org w index php title Hoplocetus amp oldid 1196240746, wikipedia, wiki, book, books, library,
