ichthyosauria वाक्य
उदाहरण वाक्य
मोबाइल
- Other ichthyosauriforms were the Ichthyopterygia, containing the Ichthyosauria and allies.
- In 1834, the order Ichthyosauria was named.
- In 1835, the order Ichthyosauria was named by Henri Marie Ducrotay de Blainville.
- However, Maisch ( 2010 ) described a new species and restated its affinity with Ichthyosauria.
- In 2003, McGowan and Motani published the first modern textbook on the Ichthyosauria and their closest relatives.
- A basal ichthyosauriform is " Cartorhynchus "; more derived species are part of the Ichthyopterygia which again include the Ichthyosauria.
- An alternative terminology was proposed by Maisch & Matzke in 2000, trying to preserve the traditional more encompassing content of the concept Ichthyosauria.
- Massare also tried to compare the speeds of plesiosaurs with those of the two other main sea reptile groups, the Ichthyosauria and the Mosasauridae.
- Ichthyosauria, which is Latin for " fish reptiles, " looked like fish, with a dorsal fin, tail fin and legs that worked like paddles.
- Until the 1980s, it was common to assume a close relationship between the Ichthyosauria and the Sauropterygia, another marine reptile group, within an overarching Euryapsida.
- The event brought about the extinction of the Spinosauridae, Pliosauridae, and possibly Ichthyosauria; although coracoids of Maastrichtian age may belong to ichthyosaurs, indicating the survival of the group until the latest Cretaceous.
- At the beginning of the Late Cretaceous, the Ichthyosauria became extinct; perhaps a plesiosaur group evolved to fill their niches : the Polycotylidae, which had short necks and peculiarly elongated heads with narrow snouts.
- They defined a node clade Ichthyosauria as the group consisting of the last common ancestor of " Thaisaurus chonglakmanii ", " Utatsusaurus hataii " and " Ophthalmosaurus icenicus "; and all its descendants.
- However, recent re-examination of the type material of " Rachitrema " reaffirms the ichthyosaurian classification of the genus, with most of the original remains referable to Ichthyosauria, and the rest being indeterminate beyond Reptilia.
- Basal ichthyopterygians ( prior to and ancestral to true Ichthyosauria ) were mostly small ( a meter or less in length ) with elongate bodies and long spool shaped vertebrae, indicating that they swam in a sinuous eel-like manner.
- ""'Ichthyosaurus " "'( derived from Order Ichthyosauria being named after it . " Ichthyosaurus " was the first complete fossil to be discovered in the early 19th century by Mary Anning in England.
- These very early " proto-ichthyosaurs " had such a distinctive build compared to " ichthyosaurs proper " that Motani excluded them from the Ichthyosauria and placed them in a basal position in a larger clade, the Ichthyopterygia ( Motani 1997, Motani et al . 1998 ).
- Ichthyosaurs belong to the order known as "'Ichthyosauria "'or "'Ichthyopterygia "'('fish flippers' a designation introduced by Sir Richard Owen in 1840, although the term is now used more for the parent clade of the Ichthyosauria ).
- Ichthyosaurs belong to the order known as "'Ichthyosauria "'or "'Ichthyopterygia "'('fish flippers' a designation introduced by Sir Richard Owen in 1840, although the term is now used more for the parent clade of the Ichthyosauria ).
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