PermeateFree said:
mollwollfumble said:
party_pants said:
wiki calls them semiaquatic
The megafauna list i was playing around with earlier has them as terrestrial, but then it also has several seal species and one dolphin as terrestrial.
Mollwollfumble also claims that T rex is semiaquatic. It is certain that young T rex had fish as part of its diet.
There were terrestrial crocodiles that spent all or most of their time on land.
>>Crocodylomorpha is a group of archosaurs that includes the crocodilians and their extinct relatives. During Mesozoic and early Cenozoic times, crocodylomorphs were far more diverse than they are now. Triassic forms were small, lightly built, active terrestrial animals.<< Wikipedia
Thanks for that.
The Biggest Carnivore: Dinosaur History Rewritten
- Tyrannosaurus rex. Length: 40-50 feet. Weight: 6 tons..
- Giganotosaurus. Length: 47 feet. Weight: 8 tons..
- Spinosaurus. Length: 55 feet. Weight: 8 tons.
Giganotosaurus was much earlier (95 Ma) and had smaller teeth (8” as against up to 13” for Tyrannosaurus”), from Argentina.

Spinosaurus was even earlier (100 Ma), with long crocodile-like jaws. Known from Argentina, Morocco, Tunisia, Algeria. “Spinosaurus is known to have eaten fish, and most scientists believe that it hunted both terrestrial and aquatic prey; evidence suggests that it lived both on land and in water as a modern crocodilian does”. The size range is shown below, B, C and D are all Spinosaurus.

Wikipedia’s largest theropods. From left to right. Spinosaurus, Carcharodontosaurus, Giganotosaurus, T rex.
Carcharodontosaurus were carnivores, with enormous jaws and long, serrated teeth up to eight inches long. Mid Cretaceous, a cousin of Giganotosaurus. Known from Algeria, Morocco, Niger, Egypt.
