Sentences with phrase «for ichthyosaurs»

The evidence consists of shells that formed the inner skeletons of belemnites, a diet staple for ichthyosaurs, marine reptiles that plied the warm Jurassic coastal waters 160 million years ago.

Not exact matches

The weird creatures in the depths of the oceans, the ichthyosaurs, pterosaurs and other extinct species, the enormous varieties of plants, insects, crustaceans, reptiles, fish and mammals — all of this makes us wonder whether chance might not be as good an «explanation» as any for the morphological richness of life.

So the new find suggests a shift in the menu for young ichthyosaurs at some point in their evolutionary history, the researchers write October 3 in Historical Biology.

Fish were the food of choice for the young of another type of ichthyosaur that lived more recently, previous research has suggested.

For their study, the researchers looked at three sets of fossils (now housed in museums in Denmark, England, and Texas) of widely disparate creatures from different eras: a leatherback turtle that lived about 55 million years ago, a large predator called a mosasaur that lived about 86 million years ago, and an ichthyosaur that swam the seas between 190 million and 196 million years ago.

Fish - shaped reptiles called ichthyosaurs reigned over the oceans for as long as dinosaurs roamed the land, but only recently have paleontologists discovered why these creatures were so successful

This Jurassic fossil, the first of its kind for India, suggests that ichthyosaurs were more widespread than previously thought, researchers reported this week in PLOS ONE.

Lomax and Massare also teamed up with former undergraduate student Rashmi Mistry (University of Reading), who had been studying an unusual ichthyosaur in the collections of the Cole Museum of Zoology, University of Reading, for her undergraduate dissertation.

There may be another explanation for how ichthyosaurs — «dino dolphins» — suffered the bends other than rapid surfacing in...

For much of the time dinosaurs were lording over the land, sleek marine reptiles called ichthyosaurs were the masters of the sea.

Ichthyosaurs, which are similar - shaped to dolphins and sharks, but are reptiles, swam the seas for millions of years during the Triassic, Jurassic and Cretaceous periods.

For unknown reasons ichthyosaurs and large pliosaurs had died out by 90 million years ago, but it didn't take long for their ecological roles to be refillFor unknown reasons ichthyosaurs and large pliosaurs had died out by 90 million years ago, but it didn't take long for their ecological roles to be refillfor their ecological roles to be refilled.

The researchers believe these bones, which were thought to be the limbs of land - dwelling dinosaurs, may be other giant ichthyosaur jawbone fragments, but it's hard to know for sure until a more complete skeleton turns up.

Besides using to distinguish between different groups of ichthyosaurs [69] and sometimes as an important taxonomic criterion [70], tooth shapes have been widely used in the past to deduce the preference of the animal for a particular prey or varied preys [69, 71].