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Otodus
''Otodus'' is an extinct genus of mackerel shark which lived from the Paleocene to the Pliocene epoch. The name ''Otodus'' comes from Ancient Greek (, meaning "ear") and (, meaning "tooth") – thus, "ear-shaped tooth". Anatomy This shark is known from its fossilized teeth and vertebral centra. Like other elasmobranchs, the skeleton of ''Otodus'' was composed of cartilage and not bone, resulting in relatively few preserved skeletal structures appearing within the fossil record. The teeth of this shark are large with triangular crown, smooth cutting edges, and visible cusps on the roots. Some ''Otodus'' teeth also show signs of evolving serrations. Size estimation The fossils of ''Otodus'' indicate that it was a very large macro-predatory shark. The largest known teeth measure about in height. The vertebral centrum of this shark are over 12.7 cm (5 inch) wide. Scientists suggest that this shark at least reached in total length (TL), with a maximum length of . D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otodus Naidini
''Otodus'' is an extinct genus of mackerel shark which lived from the Paleocene to the Pliocene epoch. The name ''Otodus'' comes from Ancient Greek (, meaning "ear") and (, meaning "tooth") – thus, "ear-shaped tooth". Anatomy This shark is known from its fossilized teeth and vertebral centra. Like other elasmobranchs, the skeleton of ''Otodus'' was composed of cartilage and not bone, resulting in relatively few preserved skeletal structures appearing within the fossil record. The teeth of this shark are large with triangular crown, smooth cutting edges, and visible cusps on the roots. Some ''Otodus'' teeth also show signs of evolving serrations. Size estimation The fossils of ''Otodus'' indicate that it was a very large macro-predatory shark. The largest known teeth measure about in height. The vertebral centrum of this shark are over 12.7 cm (5 inch) wide. Scientists suggest that this shark at least reached in total length (TL), with a maximum length of . Dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otodus Minor
''Otodus'' is an extinct genus of mackerel shark which lived from the Paleocene to the Pliocene epoch. The name ''Otodus'' comes from Ancient Greek (, meaning "ear") and (, meaning "tooth") – thus, "ear-shaped tooth". Anatomy This shark is known from its fossilized teeth and vertebral centra. Like other elasmobranchs, the skeleton of ''Otodus'' was composed of cartilage and not bone, resulting in relatively few preserved skeletal structures appearing within the fossil record. The teeth of this shark are large with triangular crown, smooth cutting edges, and visible cusps on the roots. Some ''Otodus'' teeth also show signs of evolving serrations. Size estimation The fossils of ''Otodus'' indicate that it was a very large macro-predatory shark. The largest known teeth measure about in height. The vertebral centrum of this shark are over 12.7 cm (5 inch) wide. Scientists suggest that this shark at least reached in total length (TL), with a maximum length of . Dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otodus Obliquus Multiple 021313
''Otodus'' is an extinct genus of mackerel shark which lived from the Paleocene to the Pliocene epoch. The name ''Otodus'' comes from Ancient Greek (, meaning "ear") and (, meaning "tooth") – thus, "ear-shaped tooth". Anatomy This shark is known from its fossilized teeth and vertebral centra. Like other elasmobranchs, the skeleton of ''Otodus'' was composed of cartilage and not bone, resulting in relatively few preserved skeletal structures appearing within the fossil record. The teeth of this shark are large with triangular crown, smooth cutting edges, and visible cusps on the roots. Some ''Otodus'' teeth also show signs of evolving serrations. Size estimation The fossils of ''Otodus'' indicate that it was a very large macro-predatory shark. The largest known teeth measure about in height. The vertebral centrum of this shark are over 12.7 cm (5 inch) wide. Scientists suggest that this shark at least reached in total length (TL), with a maximum length of . Dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otodus Poseidoni
''Otodus'' is an extinct genus of mackerel shark which lived from the Paleocene to the Pliocene epoch. The name ''Otodus'' comes from Ancient Greek (, meaning "ear") and (, meaning "tooth") – thus, "ear-shaped tooth". Anatomy This shark is known from its fossilized teeth and vertebral centra. Like other elasmobranchs, the skeleton of ''Otodus'' was composed of cartilage and not bone, resulting in relatively few preserved skeletal structures appearing within the fossil record. The teeth of this shark are large with triangular crown, smooth cutting edges, and visible cusps on the roots. Some ''Otodus'' teeth also show signs of evolving serrations. Size estimation The fossils of ''Otodus'' indicate that it was a very large macro-predatory shark. The largest known teeth measure about in height. The vertebral centrum of this shark are over 12.7 cm (5 inch) wide. Scientists suggest that this shark at least reached in total length (TL), with a maximum length of . Dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otodus Obliquus
''Otodus'' is an extinct genus of mackerel shark which lived from the Paleocene to the Pliocene epoch. The name ''Otodus'' comes from Ancient Greek (, meaning "ear") and (, meaning "tooth") – thus, "ear-shaped tooth". Anatomy This shark is known from its fossilized teeth and vertebral centra. Like other elasmobranchs, the skeleton of ''Otodus'' was composed of cartilage and not bone, resulting in relatively few preserved skeletal structures appearing within the fossil record. The teeth of this shark are large with triangular crown, smooth cutting edges, and visible cusps on the roots. Some ''Otodus'' teeth also show signs of evolving serrations. Size estimation The fossils of ''Otodus'' indicate that it was a very large macro-predatory shark. The largest known teeth measure about in height. The vertebral centrum of this shark are over 12.7 cm (5 inch) wide. Scientists suggest that this shark at least reached in total length (TL), with a maximum length of . Dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otodus Limhamnensis
''Otodus'' is an extinct genus of mackerel shark which lived from the Paleocene to the Pliocene epoch. The name ''Otodus'' comes from Ancient Greek (, meaning "ear") and (, meaning "tooth") – thus, "ear-shaped tooth". Anatomy This shark is known from its fossilized teeth and vertebral centra. Like other elasmobranchs, the skeleton of ''Otodus'' was composed of cartilage and not bone, resulting in relatively few preserved skeletal structures appearing within the fossil record. The teeth of this shark are large with triangular crown, smooth cutting edges, and visible cusps on the roots. Some ''Otodus'' teeth also show signs of evolving serrations. Size estimation The fossils of ''Otodus'' indicate that it was a very large macro-predatory shark. The largest known teeth measure about in height. The vertebral centrum of this shark are over 12.7 cm (5 inch) wide. Scientists suggest that this shark at least reached in total length (TL), with a maximum length of . Dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otodus Megalodon
Megalodon (''Otodus megalodon''), meaning "big tooth", is an extinct species of mackerel shark that lived approximately 23 to 3.6 million years ago (Mya), from the Early Miocene to the Pliocene epochs. It was formerly thought to be a member of the family Lamnidae and a close relative of the great white shark (''Carcharodon carcharias''). However, it is now classified into the extinct family Otodontidae, which diverged from the great white shark during the Early Cretaceous. While regarded as one of the largest and most powerful predators to have ever lived, the megalodon is only known from fragmentary remains, and its appearance and maximum size are uncertain. Scientists differ on whether it would have more closely resembled a stockier version of the great white shark, the whale shark (''Rhincodon typus''), the basking shark (''Cetorhinus maximus'') or the sand tiger shark (''Carcharias taurus''). The most recent estimate with the least error range suggests a maximum length ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otodus Chubutensis
''Otodus chubutensis'', 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 epochs, approximately 28 – 5 million years ago. This shark is considered to be a close relative of the famous prehistoric megatoothed shark, '' O. megalodon''. However, as is the case with ''O. megalodon'', the classification of this species is disputed. Taxonomy As is the case with other known megatoothed sharks, the genus of ''O. chubutensis'' remains in dispute. The Swiss naturalist Louis Agassiz first identified this shark as a species of '' Carcharodon'' in 1843. In 1906, Ameghino renamed this shark as ''C. chubutensis''. In 1964, shark researcher, L. S. Glikman recognized the transition of '' Otodus obliquus'' to ''C. auriculatus''. In 1987, shark researcher, H. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otodus Auriculatus
''Otodus auriculatus'' is an extinct species of large sharks in the genus ''Otodus'' of the family Otodontidae, closely related to the sharks of the genus ''Otodus'', and also closely related to the later species megalodon. Its teeth were large, having coarse serrations on the cutting edge, and also with two large cusplets. The teeth can reach up to , and belonged to a large "megatoothed" shark. Assignment to the genus ''Carcharocles'' rather than ''Otodus'' It is known that there is at least one genus in the family Otodontidae, that being ''Otodus''. But the names and number of the genera in Otodontidae is controversial and the family's accepted phylogeny varies among paleontologists in different parts of the world. In the US and Britain the most widespread genus name for otodontids with serrated teeth is ''Carcharocles'', and the owners of unserrated ones ''Otodus''. In countries of the former USSR, like Ukraine or Russia, all of these genera were attributed to ''Otodus'', b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lamniformes
The Lamniformes (, from Greek ''lamna'' "fish of prey") are an order of sharks commonly known as mackerel sharks (which may also refer specifically to the family Lamnidae). It includes some of the most familiar species of sharks, such as the great white, as well as more unusual representatives, such as the goblin shark and megamouth shark. Members of the order are distinguished by possessing two dorsal fins, an anal fin, five gill slits, eyes without nictitating membranes, and a mouth extending behind the eyes. Species in two families of Lamniformes – Lamnidae and Alopiidae – are distinguished for maintaining a higher body temperature than the surrounding water. Members of the group include macropredators, generally of medium-large size, including the largest macropredatory shark ever, the extinct '' Otodus megalodon,'' as well as large planktivores. The oldest member of the group is the small (~ long) carpet shark-like ''Palaeocarcharias,'' known from the Middle and Lat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otodus Angustidens
''Otodus angustidens'' is a species of prehistoric megatoothed sharks in the genus ''Otodus'', which lived during the Oligocene and Miocene epochs about 33 to 22 million years ago. This shark is related to another extinct megatoothed shark, ''Otodus megalodon''. Taxonomy The Swiss naturalist Louis Agassiz, first identified this shark as a species of genus '' Carcharodon'' in 1835. In 1964, shark expert, L. S. Glikman recognized the transition of '' Otodus obliquus'' to ''C. auriculatus'' and moved ''C. angustidens'' to genus ''Otodus''. (See "external links" below) However, in 1987, shark expert H. Cappetta recognized the '' C. auriculatus'' - ''C. megalodon'' lineage and placed all related megatooth sharks along with this species in the genus ''Carcharocles''. The complete ''Otodus obliquus'' to ''C. megalodon'' transition then became clear and has since gained the acceptance of many other experts with the passage of time. Within the ''Carcharocles'' lineage, ''C. angustide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otodus Aksuaticus
''Otodus aksuaticus'' is an extinct species of large shark in the family Otodontidae which may represent a transitional species between ''Otodus obliquus'' and ''Otodus auriculatus''. They are similar in overall morphology to ''Otodus obliquus'' except they have serrations on their cusps and blade. It is sometimes placed in the genus ''Otodus''. It is mainly found in the Ypresian stage of the Eocene epoch. They have been found in the Woodstock Member of the Nanjemoy Formation of Maryland and Virginia and Ypresian sediments in Aktulagay, Kazakhstan as well as the Ypres clay in Belgium and the London Clay The London Clay Formation is a marine geological formation of Ypresian (early Eocene Epoch, c. 56–49 million years ago) age which crops out in the southeast of England. The London Clay is well known for its fossil content. The fossils from ... in the United Kingdom. References {{Taxonbar, from=Q26240548 aksuaticus Ypresian life Eocene fish of North America Paleonto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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