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It exceeded 3 m (9.8 ft) in length, and would have weighed in at around 200 kg (440 lb), much larger than any other known mustelid, living or extinct. [155] [156] [157] There were other giant otters, like Siamogale, at around 50 kg (110 lb) [158] and Megalenhydris, which was larger than a modern-day giant river otter. [159]
The genus name derives from the Greek word "Titan" in addition to Boa, the type genus of the family Boidae. The species name is a reference to the Cerrejón region it is known from. The designated holotype is a single dorsal vertebra cataloged as UF/IGM 1, which is used by Head et al. (2009) to complete the initial size estimates of T ...
Dunkleosteus as currently defined is a wastebasket taxon for large dunkleosteoid arthrodires that are more evolutionarily derived than Eastmanosteus. [19] Labelled skull diagram of D. terrelli. The type species, D. terrelli, is the largest, best-known species of the genus. Size estimates for this species range from 4.1–10 m (13–33 ft) in ...
In the seas millions of years ago, whales were regularly hunted.Megalodons, bus-sized sharks, are believed to have been dominant ocean predators some 20 to 3.6 million years ago. The now extinct ...
The largest shark in the fossil record is the megalodon (Otodus megalodon), a colossal Neogene lamniform. The range of estimates of the maximum length for megalodon are from 17 to 20.3 m (56 to 67 ft), with a mass ranging from 65 to 114 short tons (59 to 103 t). [41] [42] [43] It is also regarded as the largest macro-predatory fish ever.
Like other known megatooth sharks, the fossils of O. angustidens indicate that it was considerably larger than the extant great white shark, with the largest individuals possibly measuring up to 11–12 metres (36–39 ft) long. [7] [8] A well preserved specimen from New Zealand is estimated at 9.3 m (31 ft) in length. [5]
[4] [5] While incomplete, the surangular, an element representing only part of the entire lower jaw length, has been estimated to have measured more than 2 metres (6.6 ft) in total. [ 3 ] The specimen consists of fragments of a right surangular, more complete than the Lilstock specimen, with some fragments possibly belonging to the angular bone.
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