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Machairodontinae is an extinct subfamily of carnivoran mammals of the family Felidae (true cats). They were found in Asia, Africa, North America, South America, and Europe, with the earliest species known from the Middle Miocene, with the last surviving species (belonging to the genera Smilodon and Homotherium) becoming extinct around Late Pleistocene-Holocene transition (~13-10,000 years ago).
John T. Nichols of the American Museum of Natural History originally described the roughtail catshark as Pristiurus arae in a 1927 issue of American Museum Novitates.He named the species after the trawler Ara, which collected the first two specimens, both 16 cm (6.3 in) long immature females, off Miami Beach on March 31, 1926. [2]
Pentanchidae, a family of ground sharks with the overall name deepwater catsharks, but many species are referred to as "catshark". This species in this family were formerly included in the Scyliorhinidae. Atelomycteridae, a family of ground sharks with the overall name coloured catsharks, but many species are referred to as "catshark". This ...
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Xenosmilus is in the tribe Homotherini in the subfamily Machairodontinae of the cat family. [1] A paper published in 2022 proposed that Xenosmilus is a more derived member of the tribe Machairodontini (another name for Homotherini), and that Homotherium venezuelensis should be reassigned to Xenosmilus, [11] with a 2024 paper arguing that remains from Uruguay should also be assigned to the ...
A Pennsylvania 8-year-old on vacation in SC found a huge fossilized tooth from a long-extinct shark species.
Dinofelis is an extinct genus of machairodontine (sabre-toothed cat), usually classified in the tribe Metailurini.It was widespread in Europe, Asia, Africa and North America from 5 million to about 1.2 million years ago (early Pliocene to early Pleistocene).
The Australian sawtail catshark (Figaro boardmani) is a common species of deepwater catshark, belonging to the family Pentanchidae, endemic to southern Australian waters. It is found on or near the bottom of the outer continental shelf and upper continental slope, at depths of 85 to 823 m (279 to 2,700 ft).