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The first shark-like chondrichthyans appeared in the oceans 400 million years ago, [1] developing into the crown group of sharks by the Early Jurassic. [2] Listed below are extant species of shark. Sharks are spread across 512 described and 23 undescribed species in eight orders. The families and genera within the orders are listed in ...
Threatened species are also referred to as a red-listed species, as they are listed in the IUCN Red List of Threatened Species. [4] In a milestone decision in 2013, CITES prohibited international trade in the fins of the scalloped hammerhead (pictured) and four other shark species. [5]
[129] [131] On October 25, 2010, the Santa Barbara County coroner confirmed the species as great white after conferring with shark experts from the Los Angeles-based Shark Research Committee. The shark that attacked Ransom is believed to have been 17–18 feet (5.2–5.5 m) long, weighing approximately 4,000 pounds (1,814 kg).
"They are also considered a keystone species, meaning they are integral to the ecology they inhabit." ... Great white sharks have been observed in Texas waters since the 1950s, as recorded in the ...
Warming ocean temperatures are increasing baby bull shark populations along the coast of Texas, including near Galveston Bay and Sabine Lake.
Topographic map of Texas. This is a list of mammals of Texas. Mammals native to or immediately off the coast of the U.S. state of Texas are listed first. Introduced mammals, whether intentional or unintentional, are listed separately. The varying geography of Texas, the second largest state, provides a large variety of habitats for mammals.
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This list of the prehistoric life of Texas contains the ... Fossil of the Early Cretaceous-Eocene shark ... †Paluxysaurus jonesi – type locality for species.