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Otodus angustidens [3] is an extinct species of prehistoric megatoothed sharks in the genus Otodus, which lived during the Late Eocene and Miocene epochs about 34 to 21 million years ago. [4] The largest individuals were about 11–12 metres (36–39 ft) long. This shark is related to another extinct megatoothed shark, the famous Otodus ...
All species are known from their fossilized teeth, and four of them (O. obliquus, O. auriculatus, O. angustidens and O. megalodon) are also known from their fossilized vertebral centra. [ 4 ] [ 5 ] Like other elasmobranchs , the skeleton of Otodus was composed of cartilage and not bone , resulting in relatively few preserved skeletal structures ...
As one species evolves into another, its teeth may become difficult to classify, exhibiting characteristics of both species. (Example: teeth from Otodus auriculatus as it evolved into O. angustidens) are difficult to definitively identify as coming from either species. Otodus megalodon fossil shark jaw (reconstruction) (late Cenozoic) 2
He noted that the teeth are almost identical with that of the Otodus appendiculatus teeth, except that the Egyptian teeth also contained two clear pairs of lateral cusplets (a feature not seen in Otodus appendiculatus). Wanner concluded that the teeth were of a closely related new species and placed it under the taxon Otodus biauriculatus. [16]
Fossilized teeth of the Paleocene–Miocene shark Otodus †Otodus †Otodus angustidens †Otodus aruiculatus; Otus
Fossilized teeth of the Paleocene–Miocene shark Otodus †Otodus †Otodus angustidens †Otolithus †Otolithus americanus †Otolithus brevior †Otolithus claybornensis †Otolithus comes †Otolithus cor †Otolithus debilis †Otolithus elegantus †Otolithus glaber †Otolithus hospes †Otolithus insuetus †Otolithus laevigatus ...
†Otodus angustidens (Agassiz, 1843) ... Their teeth are long, narrow, and very sharp with smooth edges, with one and on occasion two smaller cusplets on either side.
However, it is smaller than that of megalodon and Otodus angustidens; the tooth length of O. megalodon is 38 to 178 millimetres (1.5 to 7.0 in) and O. angustidens 25 to 117 millimetres (0.98 to 4.61 in). [4] Smaller individuals were about 4 metres (13 ft) long. [5]