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Arkansaurus measured about 4.6 metres (15 ft) long and weighed about 380.5 kilograms (839 lb). [8] [9] Examination of the holotype consisting of a nearly complete right foot suggests that Arkansaurus was similar to most ornithomimosaurians of the Early Cretaceous, with the strong curvature of the foot claws being the only exception: most ornithomimosaurians had flat claws. [7]
Size is an important aspect of dinosaur paleontology, of interest to both the general public and professional scientists. Dinosaurs show some of the most extreme variations in size of any land animal group, ranging from tiny hummingbirds , which can weigh as little as two grams, to the extinct titanosaurs , such as Argentinosaurus and ...
Ornithomimosauria ("bird-mimic lizards") are theropod dinosaurs which bore a superficial resemblance to the modern-day ostrich.They were fast, omnivorous or herbivorous dinosaurs from the Cretaceous Period of Laurasia (now Asia, Europe and North America), as well as possibly Africa.
Size comparison between a human and two species of Basilosaurus, B. cetiodes (dark blue) and B. isis The heaviest archeocete , and possibly the heaviest known mammal was Perucetus , with weight estimated at 85–340 t (84–335 long tons; 94–375 short tons), while length is estimated at 17.0–20.1 meters (55.8–65.9 ft), [ 108 ] possibly ...
Date/Time Thumbnail Dimensions User Comment; current: 05:37, 25 April 2018: 2,370 × 900 (106 KB): PaleoGeekSquared: Remove labels to avoid repetition on respective article
English: A comparison of the sizes of two large Morrison theropods. Ceratosaurus nasicornis averaged about 6 m / 20 ft (Norman 1985, Foster 2007). The larger and more common Allosaurus fragilis was usually around 10 m / 32 ft (Glut 1997, Foster 2007). Specimens from both genera are known in larger sizes, but these are probably typical.
Abelisauridae (meaning "Abel's lizards") is a family (or clade) of ceratosaurian theropod dinosaurs.Abelisaurids thrived during the Cretaceous period, on the ancient southern supercontinent of Gondwana, and today their fossil remains are found on the modern continents of Africa and South America, as well as on the Indian subcontinent and the island of Madagascar.
Original description : A size comparison of four different snakes; comparing large individuals of the extant green anaconda (Eunectes murinus) and reticulated python (Malayopython reticulatus) to total length estimates of the extinct Gigantophis and Titanoboa. • The green anaconda is the largest (most massive) extant snake.