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Reconstruction of A. grandis (top), with megalodon (bottom) for comparison. Alopias grandis is a species of giant thresher shark from the Miocene.Estimates calculated from teeth comparisons suggest the living animal was comparable in size to the extant great white shark. [3]
The fossils of Otodus sharks indicate that they were very large macro-predatory sharks. [7] The largest known teeth of O. obliquus measure about 104 millimetres (4.1 in) in height. [8] The vertebral centrum of this species are over 12.7 cm (5 inch) wide. [7] Scientists suggest that O. obliquus would have measured about 8–9 metres (26–30 ft ...
Cosmopolitodus is an extinct genus of mackerel shark that lived between thirty and one million years ago during the late Oligocene to the Early Pleistocene epochs.Its type species is Cosmopolitodus hastalis, the broad-tooth mako (other common names include the extinct giant mako and broad-tooth white shark).
Although a thresher shark, scientists hypothesized that A. palatasi may have looked similar to the great white shark.. A. palatasi is only known from isolated teeth. They are large, measuring up to an excess of 4 centimetres (2 in) in height and suggesting a shark that grew to similar sizes or was larger than the modern great white shark, [3] which grows between 3.3–4.8 metres (11–16 ft ...
Otodus sokolovi [2] is an extinct species or chronospecies of large shark in the family Otodontidae which may represent a transitional chronospecies between Otodus auriculatus and Otodus angustidens. [3] They differ from the former with a less curved root and finer serrations and from the latter with more prominent and recurved cusps.
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Megalodon lower jaw with 4 tooth rows and 4 tooth series labeled. "Series 1" contains the functional teeth at the front of the jaw. In taxonomy, shark teeth are counted as follows: rows of teeth are counted along the line of the jaw, while series of teeth are counted from the front of the jaw inward. [19]
Fossil tooth of Hemipristis serra Several Hemipristis serra teeth from two different locations in the U.S., housed in a large ryker display. Sharks portal; Hemipristis serra is an extinct species of weasel shark which existed during the Miocene epoch. It was described by Louis Agassiz in 1843. [1]