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Pterygotus is an extinct genus of giant predatory eurypterid, a group of extinct aquatic arthropods. Fossils of Pterygotus have been discovered in deposits ranging in age from Middle Silurian to Late Devonian , and have been referred to several different species.
Pterygotioidea (the name deriving from the type genus Pterygotus, meaning "winged one") is a superfamily of eurypterids, an extinct group of aquatic arthropods. Pterygotioids were the most derived members of the infraorder Diploperculata and the sister group of the adelophthalmoid eurypterids.
India is the world's 8th most biodiverse region with a 0.46 BioD score on diversity index, 102,718 species of fauna and 23.39% of the nation's geographical area under forest and tree cover in 2020. [1]
Date/Time Thumbnail Dimensions User Comment; current: 17:04, 4 January 2024: 1,108 × 1,095 (301 KB): Slate Weasel: Smaller appendage II following Acutiramus: 14:02, 3 January 2024
At a length of 2.1 metres (6.9 feet), A. bohemicus is the largest known species of the genus, [1] whilst the smallest were A. floweri and A. perryensis both at a length of 20 cm (7.9 in). [2] The body of Acutiramus was very slender, with members of the genus being almost five times as long as they were wide. [3]
The reconstruction of Pterygotus in King et al. 2017 also follow this idea and propose a sensory function. It seems unlikely that Pterygotus could be an exception, based on its overall resemblance to other pterygotids and relatively derived phylogenetic position. Junnn11 15:57, 3 January 2024 (UTC)
A study [15] from Saswad-Jejuri, Pune (western India) has found H. tamulus in a wide range of microhabitats, including scrubland and veld with stones, red and black soil in cropland, loamy, grassy and stony hillslopes and -tops, black soil in mango orchards, Eucalyptus plantations, and under tree bark. With an abundance of 48.43% it was by far ...
Bascanichthys deraniyagalai (native), Indian longtailed sand-eel, Indian longtailed sand-eel; Bascanichthys longipinnis (native); Caecula pterygera (native), finny snake-eel, Finny snake eel