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Its type species is Cosmopolitodus hastalis, the broad-tooth mako (other common names include the extinct giant mako and broad-tooth white shark). In 2021, Isurus planus was reassigned to the genus, and thus became the second species C. planus . [ 3 ]
Parotodus, commonly known as the false-toothed mako shark (or false mako shark), is an extinct genus of mackerel shark that lived approximately 53 to one million years ago during the Eocene and Pleistocene epochs. Its teeth, which are found worldwide, are often prized by fossil collectors due to their rarity.
Carcharomodus is an extinct genus of lamnid shark.Its only species is Carcharomodus escheri, [1] commonly nicknamed the serrated mako shark or Escher's mako shark.It is an extinct lamnid that lived during the Miocene and that was formerly thought to have been transitional between the broad-toothed "mako" Cosmopolitodus hastalis and the modern great white, but is now considered to be an ...
Only a single species, G. cuvier, the tiger shark, is extant. [1] The earliest fossils date back to the early Eocene epoch, ( Ypresian ), around 56–47.8 Million years ago. [ 2 ] While historically considered a member of the requiem shark family Carcharhinidae , it is currently considered to be the only member of the family Galeocerdonidae . [ 3 ]
Sharks could be facing extinction over the next couple of decades. Human interference is largely to blame for the species interference. Overfishing of sharks has increased as the global demand has ...
Nervous shark: Carcharhinus cautus (Whitley, 1945) Least concern 1.0–1.3 m (3.3–4.3 ft) possibly 1.5 m (4.9 ft) Pacific smalltail shark: Carcharhinus cerdale (C. H. Gilbert, 1898) Critically endangered 1.4 m (4.6 ft) Australian blackspot shark: Carcharhinus coatesi (Whitley, 1939) Least concern 0.8 m (2.6 ft) Whitecheek shark: Carcharhinus ...
[10] [11] Sharks are often killed for shark fin soup, which some Asian countries regard as a status symbol. [12] Fishermen capture live sharks, fin them, and dump the finless animal back into the water to die from suffocation or predators. [11] [13] Sharks are also killed for their flesh in Europe and elsewhere. [14]
The occurrence of derived sharks in the Devonian is also irreconcilable with the results of all phylogenetic estimates in the group. [6] [7] [8] It is debated whether the extinct families Orthacodontidae and Paraorthacodontidae belong to the Hexanchiformes or the extinct Synechodontiformes. However, the Shark-References database currently lists ...