stegocephalia sentence in Hindi
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- The names Stegocephalia and Labyrinthodontia were used interchangeably to refer to the order in which it belonged.
- Stegocephalia means " roof-headed " in Greek, a reference to the wide, flat heads of temnospondyls and other early tetrapods.
- This concept of the clade Stegocephalia was chosen to substitute for the name Tetrapoda by those who sought to restrict Tetrapoda to the crown group.
- Later in the 19th century, temnospondyls were classified as various members of Stegocephalia, a name coined by American paleontologist Edward Drinker Cope in 1868.
- "Sclerocephalus " was often classified within the deprecated paraphyletic taxa Stegocephalia and Labyrinthodontia, because of a skull that was connected to the shoulder girdle and teeth of labyrinthodont type.
- Because of these scales, the caecilians were once thought to be related to the fossil Stegocephalia, but they are now believed to be a secondary development, and the two groups are most likely unrelated.
- The largely synonymous name Stegocephalia has been taken up by Michel Laurin and defined tetrapodamorphs, though its total content is a matter of some uncertainty, as the relationships of these animals are not well understood.
- Stegocephalia is a larger group equivalent to some broader uses of the word " tetrapod ", used by scientists who prefer to reserve the word " tetrapod " for the crown group ( based on the nearest common ancestor of living forms ).
- A famous locality that yielded numerous excellently preserved fossils of " Sclerocephalus " is Odernheim am Glan in Rhineland-Palatinate ( Germany ), where the Permian sediments of the Rotliegend have even been named " Stegocephalenkalke " ( = Stegocephalia limestones ).
- Paleontologist Michel Laurin took up the older term and defined stegocephalians cladistically as all vertebrates more closely related to temnospondyli than to " Panderichthys " ( the closest relative of tetrapods known to have retained paired fins, see below ) Therefore, Stegocephalia includes all vertebrate groups that have toes rather than fins, and a few ( " Elginerpeton ", " Metaxygnathus ", " Ventastega " and possibly " Hynerpeton " ) that may have retained paired fins.
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