ichthyosauria उदाहरण वाक्य
उदाहरण वाक्य
- 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 ).