…(1) The most primitive reptiles do not have a temporal fenestra and are called the anapsida, which includes the orders Cephalosauria, Testudines, and Mesosauria. Limnoscelis , discovered in the Early Permian strata of New Mexico, is about 1.5 meters long and has developed limbs, making it a typical example of primitive reptiles. (2) The Synapsida, which has a single lateral fenestra with the postorbital and squamosals lined up on its upper edge, is a group of mammal-like reptiles that are thought to have succeeded mammals. … *Some of the terminology that mentions "Limnoscelis" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…(1)最も原始的な爬虫類には側頭窓がなく,無弓亜綱Anapsidaと呼ばれ,杯竜目,カメ目,中竜目が属する。ニューメキシコ州の二畳紀前期の地層から産出したリムノスケリスLimnoscelisは全長約1.5mで四肢が発達し,原始的爬虫類の典型とされる。(2)外側頭窓が一つで,その上縁に後眼窩骨と鱗状骨が並ぶ単弓亜綱Synapsidaは哺乳類型爬虫類の一群で,哺乳類に続くものと考えられている。… ※「Limnoscelis」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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