eunotosaurus sentence in Hindi
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- "Eunotosaurus " was considered the ancestor of turtles up until the late 1940s.
- "Eunotosaurus " was assigned to its own family, Eunotosauridae, in 1954.
- The study identified several features that united " Eunotosaurus " with turtles in a true clade.
- In 2000, " Eunotosaurus " was placed in the clade Parareptilia, separate from turtles and cotylosaurs.
- "Eunotosaurus " was incorporated in a recent 2010 phylogenetic analysis that sought to determine the origin of turtles.
- While the third phase is unique to " Eunotosaurus ", the second phase is also seen in modern turtles.
- If " Eunotosaurus " is close to the ancestry of turtles, it may have had similar sets of muscles.
- While relatively rare, " Eunotosaurus " is common enough in the Karoo to be used as a biostratigraphic marker.
- However, more recent fossil finds have shown that " Eunotosaurus " is a parareptile unrelated to either turtles or captorhinids.
- In each rib of " Eunotosaurus ", the posterior surface of the lower ridge has Sharpey's fibers embedded in it.
- Similarly, a morphological study conducted by Lyson et al . ( 2010 ) recovered them as anapsids most closely related to " Eunotosaurus ".
- The lack of Sharpey's fibers on the anterior side of the ribs of " Eunotosaurus " suggests that it lacked functional intercostal muscles.
- This study claimed that " Eunotosaurus " shared derived features of its ribs and vertebrae with the earliest turtles, thus making it a transitional form.
- However, analysis of the transitional fossil, " Eunotosaurus africanus " shows that early ancestors of turtles lost that intercostal muscle usually found between the ribs.
- Over a century after its naming, " Eunotosaurus " was known from less than a dozen specimens, with very little material known from the skull.
- A 2008 phylogenetic analysis of parareptiles found " Eunotosaurus " to be the sister taxon of " Milleretta " and thus within the family Millerettidae.
- Since " Eunotosaurus " possesses both turtle-like and parareptile-like features, it has often been used to justify a parareptilian ancestry for turtles.
- The Middle Permian reptile " Eunotosaurus " from South Africa was seen as the " missing link " between cotylosaurs and chelonians throughout much of the early 20th century.
- The clade consisting of " Eunotosaurus " and turtles was called Pan-Testudines ( defined as all animals more closely related to turtles than to any other living group ).
- In his 1956 book " Osteology of the Reptiles ", American paleontologist Alfred Sherwood Romer claimed that " Eunotosaurus " could not be included within Chelonia based on the available evidence.
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