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Alopias palatasi, commonly referred to as the serrated giant thresher, is an extinct species of giant thresher shark that lived approximately 20.44 to 13.7 million years ago during the Miocene epoch, and is known for its uniquely serrated teeth.
The anterior teeth were almost perpendicular to the jaw and symmetrical, whereas the posterior teeth were slanted and asymmetrical. [63] Megalodon teeth can measure over 180 millimeters (7.1 in) in slant height (diagonal length) and are the largest of any known shark species, [29]: 33 implying it was the largest of all macropredatory sharks. [35]
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] Remains generally consist of teeth, which have been found in the United States in the Calvert Formation of Virginia and Maryland, [4] and in ...
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]
Otodus chubutensis, [1] meaning "ear-shaped tooth of Chubut", from Ancient Greek ὠτ (ōt, meaning "ear") and ὀδούς (odoús, meaning "tooth") – thus, "ear-shaped tooth", is an extinct species of prehistoric megatoothed sharks in the genus Otodus, that lived during Oligocene, Miocene, and Pliocene, in ~28–5.3 milions years ago. [2]
Galeocerdo mayumbensis is an extinct species of sharks that lived in the Miocene period. [1] A relative of the tiger shark (Galeocerdo cuvier), it lived in North America, South America, mainland Africa and Madagascar. [2] The teeth of G. mayumbensis are different from those of G. aduncus.
Fossils from the Calvert Formation, Zone 10, Calvert Co., MD (Miocene) The Calvert Formation is notable for its plentiful fossil shark teeth. Especially popular among "rockhounds" are those from giants such as Carcharocles and the famous megalodon [7] (which is often included in Carcharocles).
Cetorhinus huddlestoni is extinct species of basking shark that lived in the Middle miocene period. Its fossils consist of juvenile specimens, represented by fragmented and complete teeth. They are believed to be the same size as the current basking shark (Cetorhinus maximus). It was discovered in the Shark tooth Formation by Welton in 2013. [1]
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