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Rank Common name Scientific name Family Image Average mass (kg) Maximum mass (kg) Average length (m) Maximum length (m) Shoulder height (m) Native range
The North American river otter is a medium-sized, semiaquatic carnivore endemic to eastern North America. The oldest fossils of American river otters come from Port Kennedy and Cumberland Cave. [11] [1] Cope considered the Port Kennedy specimen distinct, dubbing it L. rhoadsii, but it has been lumped with L. canadensis. [12] [1] †Canis ...
Giganotosaurus was one of the largest known terrestrial carnivores, but the exact size has been hard to determine due to the incompleteness of the remains found so far. Estimates for the most complete specimen range from a length of 12 to 13 m (39 to 43 ft), a skull 1.53 to 1.80 m (5.0 to 5.9 ft) in length, and a weight of 4.2 to 13.8 t (4.6 to ...
This is a list of the mammal species recorded in Canada.There are approximately 200 mammal species in Canada. [1] Its large territorial size consist of fifteen terrestrial and five marine ecozones, ranging from oceanic coasts, to mountains to plains to urban housing, mean that Canada can harbour a great variety of species, including nearly half of the known cetaceans. [2]
The smallest genus known from good material is Irritator, which was between 6 and 8 meters (20 and 26 feet) long and around 1 metric ton (1.1 short tons; 0.98 long tons) in weight. [ 22 ] [ 23 ] Ichthyovenator , Baryonyx , and Suchomimus ranged from 7.5 to 11 m (25 to 36 ft) long, and weighed between 1 and 5.2 t (1.1 and 5.7 short tons; 0.98 ...
Tameryraptor ("thief from the beloved land") is an extinct genus of large carcharodontosaurid theropod dinosaur that lived from around 100 million to 94 million years ago during the Late Cretaceous (Cenomanian age) in the Bahariya Formation of Egypt.
The teeth were so highly curved and compressed that they may have had difficulty penetrating flesh, and the tooth row extended far behind the orbit. The lower teeth were also relatively tiny and such an arrangement suggests Aerosaurus was a carnivore. Their limbs were long, and skeleton built lightly suggests they were active and agile.
A 2010 review of the literature concluded that tyrannosaurs were "small- to mid-sized" for their first 80 million years but were "some of the largest terrestrial carnivores to ever live" in their last 20 million years. [8] [9] Skull and neck of Daspletosaurus, from the Field Museum of Natural History in Chicago.