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Há 6 dias · Hatteria. (Gray, 1842) (rejected name) Rhynchocephalus. ( Owen, 1845) (rejected name) The tuatara ( Sphenodon punctatus) is a species of reptile endemic to New Zealand. Despite its close resemblance to lizards, it is part of a distinct lineage, the order Rhynchocephalia. [8] The name tuatara is derived from the Māori language and means "peaks ...
Há 2 dias · Like all other squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales. Many species of snakes have skulls with several more joints than their lizard ancestors, enabling them to swallow prey much larger than their heads ( cranial kinesis ).
Há 1 dia · Birds are the most diverse extant amniote clade, consisting of over 11,000 species 32 the sole living representatives of Dinosauria, and are typified by a great variety of ecological niche ...
Há 4 dias · Within a few million years, two important amniote lineages became distinct: synapsids, from which mammals are descended, and sauropsids, from which lizards, snakes, turtles/tortoises, crocodilians, dinosaurs, and birds are descended.
3 de mai. de 2024 · Abstract. The amniote pallium contains sensory circuits structurally and functionally equivalent, yet their evolutionary relationship remains unresolved. Our study employs birthdating analysis, single-cell RNA and spatial transcriptomics, and mathematical modeling to compare the development and evolution of known pallial circuits ...
Há 2 dias · The very first reptile was an amniote, which is any group of animals that undergo embryonic or fetal development within an amnion, and appeared 350 million years ago, during the late Paleozoic era. These amniotes later split into two groups – the synapsids and the sauropsids, which are reptiles.
Há 5 dias · amniote: 1 n any member of the Amniota Type of: craniate , vertebrate animals having a bony or cartilaginous skeleton with a segmented spinal column and a large brain enclosed in a skull or cranium
