Sentences with phrase «of brachiopods»

The evolutionary origin of brachiopods and their relations to other species are still unclear.

The Lingula genome decoding sheds some light on the evolutionary history of brachiopods and lophotrochozoans as well as the origin of biomineralisation.

For years, scientists have been debating the phylogenetic position of brachiopods and molluscs, as well as their affinities for other animals in the same group, the Lophotrochozoa, comprising segmented worms, clams, oysters, snails, squids, and so on.

There, Bond and his colleagues examined chert rocks — silica formations, created by the skeletons of dead sponges, that also contain many species of brachiopods.

Analysis of the complete mitochondrial DNA sequence of the brachiopod Terebratulina retusa places Brachiopoda within the protostomes.

Not exact matches

A little further in the rock record, a few brachiopod species recover, Wignall says, and then mollusks take over en masse, before the devastation of the Permian extinction, 8 million years later.

Most foraminifera — tiny, shelled protozoans — were wiped out, along with many species of clamlike brachiopods.

Other survivors of the Hangenberg event included sea urchins, sea lilies and shelled invertebrates called brachiopods.

Analysis of the soft tissues of fossils also suggests morphological changes among lingulid brachiopods.

The phylogenetic analysis of the Lingula genome indicates that brachiopods are close relatives to molluscs, and more distant cousins to segmented worms; however, their relations to other lophotrochozoans still require further investigation.

Brachiopods are one of the first known examples of animal biomineralisation — a process whereby living organisms stiffen or harden tissues with minerals.

Other animals from these ancient marine sediments include a number of exciting new discoveries: arthropods without skeletons, many sponges, a few shelled brachiopods and a single trilobite species.

A paleontologist colleague of ours was recently asked by a student whether brachiopods, an invertebrate group commonly preserved as fossils, were kosher.

Altenburger, A. Wanninger, Comparative larval myogenesis and adult myoanatomy of the rhynchonelliform (articulate) brachiopods Argyrotheca cordata, A. cistellula, and Terebratalia transversa.

The Devonian is often appropriately called the «Age of Fishes», since the fish took their place in complex reef systems containing nautiloids, corals, graptolites, blastods, echinoderms, trilobites, sponges, brachiopods and conodonts.

This event had eliminated dinosaurs, pterosaurs, ammonites and belemnites, as well as many groups of birds, bivalves, brachiopods, marine reptiles, plants and planktonic organisms.