Otodus (Carcharocles)

• Main Authors: Zouhri, Samir, Gingerich, Philip D., Khalloufi, Bouziane, Bourdon, Estelle, Adnet, Sylvain, Jouve, Stéphane, Elboudali, Najia, Amane, Ayoub, Rage, Jean-Claude, Tabuce, Rodolphe
• Format: Text
• Language: unknown
• Published: Zenodo 2021
• Subjects: Biodiversity; Taxonomy; Animalia; Chordata; Elasmobranchii; Lamniformes; Lamnidae; Otodus; Antarctic; Antarctic Peninsula; Alabama; Seymour; Seymour Island; Antarc*
• Online Access: https://dx.doi.org/10.5281/zenodo.4606611; https://zenodo.org/record/4606611

Otodus ( Carcharocles ) sp. EXAMINED MATERIAL. — A dozen isolated teeth, figured material includes FSAC Bouj-323. DESCRIPTION Teeth are some smaller than those of previous species and up to 5 cm in height (Fig. 2D, E). Compared to Otodus ( Carcharocles ) cf. sokolowi , teeth of this second species display a flatter root with subrectangular basal extremities of lobes, a more slender cusp with finer serrations and two cusplets which are smaller and lower than in other coeval species. REMARKS These characters are different from the coeval small megatoothed shark species Otodus ( Carcharocles ) auriculatus , commonly reported in worldwide middle Eocene deposits (e.g., Ward & Wiest 1990; Dutheil 1991; Long 1992; Cappetta & Stringer 2002, Cappetta & Case 2016). Similar otodontid morphology is observed in the Lutetian material of Togo (Pers. Observ.) where co-occurrence of two representatives of megatoothed sharks is also noticed. : Published as part of Zouhri, Samir, Gingerich, Philip D., Khalloufi, Bouziane, Bourdon, Estelle, Adnet, Sylvain, Jouve, Stéphane, Elboudali, Najia, Amane, Ayoub, Rage, Jean-Claude & Tabuce, Rodolphe, 2021, Middle Eocene vertebrate fauna from the Aridal Formation, Sabkha of Gueran, southwestern Morocco, pp. 121-150 in Geodiversitas 43 (5) on page 125, DOI: 10.5252/geodiversitas2021v43a5, http://zenodo.org/record/4605963 : {"references": ["WARD J. W. & WIEST R. L. 1990. - A checklist of Palaeocene and Eocene sharks and rays (Chondrichthyes) from the Pamunkey Group, Maryland and Virginia, USA. Tertiary Research 12: 81 - 88.", "DUTHEIL D. B. 1991. - A checklist of Neoselachii (Pisces, Chondrichtyes) from Paleogene of Paris Basin, France. Tertiary Research 13: 27 - 36.", "LONG D. J. 1992. - Sharks from the La Meseta Formation (Eocene), Seymour Island, Antarctic Peninsula. Journal of Vertebrate Paleontology 12 (1): 11 - 32. https: // doi. org / 10.1080 / 02 724634.1992. 10011428", "CAPPETTA H. & STRINGER G. 2002. - A new batoid genus (Neoselachii: Myliobatiformes) from the Yazoo (late Eocene) of Louisiana, USA. Tertiary Research 21: 51 - 56.", "CAPPETTA H. & CASE G. R. 2016. - A Selachian Fauna from the middle Eocene (Lutetian, Lisbon Formation) of Andalusia, Covington County, Alabama, USA. Palaeontographica Abteilung A 307 (1 - 6): 43 - 103."]}