Lepidosauria
Also known as Lepidosaur, Lepidosaurs, Lepidosaurian
The Lepidosauria (, from Greek meaning scaled lizards) is a superorder of reptiles, containing the orders Squamata and Rhynchocephalia. Squamata, comprising lizards and snakes, contains over 9,000 species, making it by far the most species-rich and diverse order of non-avian reptiles in the present day. Rhynchocephalia was a formerly widespread and diverse group of reptiles in the Mesozoic Era. However, it is represented by only one living species: the tuatara (Sphenodon punctatus), a superficially lizard-like reptile native to New Zealand.
Species
The foot of a skink, showing lepidosaurs' characteristic overlapping scales Lepidosauria (dari bahasa Yunani yang berarti kadal bersisik) adalah reptil dengan sisik tumpang tindih. Subkelas ini meliputi Squamata dan Rhynchocephalia. Ini adalah kelompok monofiletik dan karena itu berisi semua keturunan dari nenek moyang yang sama. Squamata termasuk ular, kadal, dan amphisbaenia. Rhynchocephalia adalah kelompok luas dan beragam 220-100 juta tahun yang lalu; namun, hal itu sekarang diwakili hanya oleh genus Sphenodon, yang berisi dua spesies tuatara, asli Selandia Baru. Lepidosauria adalah takson saudari dari Archosauria, yang meliputi Aves dan Crocodilia. Kadal dan ular adalah kelompok yang paling banyak spesiesnya dari Lepidosauria dan, dikombinasikan, mengandung lebih dari 9.000 spesies. Ada banyak perbedaan morfologi yang membedakan kadal, tuatara, dan ular.
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Article
8 sectionsContents
- Evolution
- Description
- Biology and ecology
- Hunting and diet
- Conservation
- Interactions with humans
- References
- External links
The Lepidosauria (, from Greek meaning scaled lizards) is a superorder of reptiles, containing the orders Squamata and Rhynchocephalia. Squamata, comprising lizards and snakes, contains over 9,000 species, making it by far the most species-rich and diverse order of non-avian reptiles in the present day. Rhynchocephalia was a formerly widespread and diverse group of reptiles in the Mesozoic Era. However, it is represented by only one living species: the tuatara (Sphenodon punctatus), a superficially lizard-like reptile native to New Zealand.
Lepidosauria is a monophyletic group (i.e. a clade), containing all descendants of the last common ancestor of squamates and rhynchocephalians. Lepidosaurs can be distinguished from other reptiles via several traits, such as large keratinous scales which may overlap one another. Purely in the context of modern taxa, Lepidosauria can be considered the sister taxon to Archelosauria, which includes Testudines (turtles), Aves (birds) and Crocodilia (crocodilians). Lepidosauria is encompassed by Lepidosauromorpha, a broader group defined as all reptiles (living or extinct) closer to lepidosaurs than to archosaurs.