Middle Eocene vertebrate fauna from the Aridal Formation, Sabkha of Gueran, southwestern Morocco Author Zouhri, Samir Author Gingerich, Philip D. Author Khalloufi, Bouziane Author Bourdon, Estelle Author Adnet, Sylvain Author Jouve, Stéphane Author Elboudali, Najia Author Amane, Ayoub Author Rage, Jean-Claude Author Tabuce, Rodolphe text Geodiversitas 2021 2021-03-11 43 5 121 150 journal article 7746 10.5252/geodiversitas2021v43a5 e42658a2-0e15-4e90-9bc5-0d00cbcbd781 1638-9395 4605963 urn:lsid:zoobank.org:pub:697FC553-E37B-4EF9-97A4-950E4DEE246C Macrorhizodus praecursor ( Leriche, 1905 ) EXAMINED MATERIAL. — Hundreds of isolated teeth, figured material includes FSAC Bouj-327, 328, 329 and 330. DESCRIPTION The more abundant complete and well-preserved teeth ( Fig. 2 H-K) recovered in both localities (Locality I, Garouaz, Iddir and Laazri) belong to the lamnid Macrorhizodus praecursor . Central cusp is especially triangular in anterolateral files (e.g., Fig. 2J ) with a flat labial face and a little convex lingual face. REMARKS This species, representing an extinct pelagic mako shark, is very abundant in all middle and late Eocene localities and distributed worldwide in the marine realm.