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In the 10th edition of Systema Naturae, Carl Linnaeus described the Amphibia as: [1]. Animals that are distinguished by a body cold and generally naked; stern and expressive countenance; harsh voice; mostly lurid color; filthy odor; a few are furnished with a horrid poison; all have cartilaginous bones, slow circulation, exquisite sight and hearing, large pulmonary vessels, lobate liver ...
The decline in amphibian and reptile populations has led to an awareness of the effects of pesticides on reptiles and amphibians. [177] In the past, the argument that amphibians or reptiles were more susceptible to any chemical contamination than any land aquatic vertebrate was not supported by research until recently. [ 177 ]
Scutes on a crocodile. Reptile skin is covered with scutes or scales which, along with many other characteristics, distinguish reptiles from animals of other classes. They are made of alpha and beta-keratin and are formed from the epidermis (contrary to fish, in which the scales are formed from the dermis).
File talk:Benny Trapp Triturus macedonicus Griechenland.jpg; File talk:Bindenwaran 1.jpg; File talk:Blue Iguana on Wilderness Trail at QEII Botanic Park.jpg; File talk:Bombina bombina 1 (Marek Szczepanek) tight crop.jpg; File talk:Bombina variegata 32.jpg; File talk:Brachylophus fasciatus Fidschileguan.jpg; File talk:Bufo viridis.jpg
The skin is slimy and bears ringlike markings or grooves and may contain scales. [ 2 ] Modern caecilians are a clade , the order Gymnophiona / ˌ dʒ ɪ m n ə ˈ f aɪ ə n ə / (or Apoda / ˈ æ p ə d ə / ), one of the three living amphibian groups alongside Anura ( frogs ) and Urodela ( salamanders ).
Dermophis mexicanus, also known commonly as the Mexican burrowing caecilian or the Mexican caecilian, and locally as the tapalcua or tepelcua, is a species of limbless amphibian in the family Dermophiidae. The species is native to Mexico and Central America, where it burrows under leaf litter and plant debris.
The skin, at least in the more advanced forms probably had a water-tight epidermal horny overlay, similar to the one seen in today's reptiles, though they lacked horny claws. [ 32 ] [ 33 ] In chroniosuchians and some seymouriamorphs , like Discosauriscus , dermal scales are found in post-metamorphic specimens, indicating they may have had a ...
The skin fragments that were found in their stomach are an indication that these frogs commit cannibalism or eat their own skin which is common among amphibians. Based on these results, P. pipa is an ambush predator that will opportunistically eat anything that falls into the water or that it may encounter when occasionally foraging on land. [14]