lissamphibians造句

• There are currently three major hypotheses on the origins of lissamphibians.
• Amidst lissamphibians, there is evidence for azhdrachid remains have been reported in Tennessee.
• The temnospondyl family Amphibamidae has been considered a possible candidate for the ancestors of lissamphibians.
• A consensus on origin of lissamphibians and relationship between the various labyrinthodonts is not likely to materialise soon.
• Laurin ( 2001 ), as it would make them more closely related to amniotes than to lissamphibians.
• The inclusion of certain extinct groups in the crown Tetrapoda depends on the relationships of modern amphibians, or lissamphibians.
• In the temnospondyl hypothesis ( TH ), lissamphibians are most closely related to dissorophoid temnospondyls, which would make temnospondyls tetrapods.
• In 2008, an amphibamid called " Doleserpeton annectens " is now thought to be even more closely related to lissamphibians.
• This region is also noted for its lissamphibians, lizards and turtles, as well as diverse multituberculates, dryolestoids, and spalacotheriids.
• In the lepospondyl hypothesis ( LH ), lissamphibians are the sister taxon of lysorophian lepospondyls, making lepospondyls tetrapods and temnospondyls stem-tetrapods.
• Like the modern amphibians, they were mostly small with simple vertebrae, resembling lissamphibians in many aspects of external anatomy and presumably ecological niches.
• ""'Indorana " "'is an extinct genus of lissamphibians which existed in what is now India during the Early Eocene.
• The relationship of the various groups to each other and to the lissamphibians ( and to some degree the first reptiles ) is still a matter of some debate.
• "' Chitin "'( internal shells of cephalopods, including squid and octopuse s and on the scales and other soft tissues of fish and lissamphibians.
• "' Reptiliomorpha "'is a clade containing the amniotes and those tetrapods that share a more recent common ancestor with amniotes than with living amphibians ( lissamphibians ).
• It was first described as a " protolissamphibian ", and the specific name " annectens " means " connecting " in reference to its inferred transitional position between temnospondyls and lissamphibians.
• However, later phylogenetic studies recovered " Tulerpeton " outside the least inclusive clade containing amniotes and lissamphibians, finding it to be more distantly related to amniotes than such extinct tetrapods as whatcheeriids were.
• Other features including the shape of the palate and the back of the skull, the short ribs, and the smooth skull surface also point to it being a closer relative of lissamphibians than is " Gerobatrachus ".
• Its proximity to the mainland is further borne out by the remains of terrestrial plants found with it, and because most extant amphibians do not tolerate saltwater, and that this saltwater intolerance was probably present in the earliest lissamphibians.
• As the exact phylogenetic position of Lissamphibia within Tetrapoda remains uncertain, it also remains controversial which fossil tetrapods are more closely related to amniotes than to lissamphibians, and thus, which ones of them were reptiliomorphs in any meaning of the word.