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Chroniosuchidae is a family of semi-aquatic tetrapods found in sediments from the upper Permian and the upper Triassic periods, most in Russia.They were generally rather large animals, with long jaws similar to those found in modern crocodiles, and probably lived a similar lifestyle as riverside piscivores and ambush predators.
A modern semi-aquatic lizard: the marine iguana Modern squamates which have made their own adaptions to allow them to spend significant time in the ocean include marine iguanas and sea snakes . Sea snakes are extensively adapted to the marine environment, giving birth to live offspring and are largely incapable of terrestrial activity.
Family Typhlonectidae (aquatic caecilians) Order Urodela (salamanders) Suborder Cryptobranchoidea. ... List of tetrapod families. Add languages ...
In biology, being semi-aquatic refers to various macro organisms that live regularly in both aquatic and terrestrial environments. When referring to animals , the term describes those that actively spend part of their daily time in water (in which case they can also be called amphibious ), or land animals that have spent at least one life ...
Some of these tetrapods (e.g. Archeria, Eogyrinus) were elongate, eel-like aquatic forms with diminutive limbs, while others (e.g. Seymouria, Solenodonsaurus, Diadectes, Limnoscelis) were so reptile-like that until quite recently they actually had been considered to be true reptiles, and it is likely that to a modern observer they would have ...
However, this group represents a paraphyletic grade of primitive stem-tetrapods and is not used by many modern researchers. Phylogenetic analysis has shown Ichthyostega is intermediate between other primitive stegocephalian stem-tetrapods. The evolutionary tree of early stegocephalians below follows the results of one such analysis performed by ...
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Such pressure is non-detectable in air, but grooves for the lateral line sense organs were found on the skull of early tetrapods, suggesting either an aquatic or largely aquatic habitat. Modern amphibians, which are semi-aquatic, exhibit this feature whereas it has been retired by the higher vertebrates.