trilobites's Usage Examples:

clade of Arthropoda, comprising the monophyletic group formed by the trilobites, other great appendage arthropods and trilobite-like families (Helmetiidae.

Asaphida is a large, morphologically diverse order of trilobites found in marine strata dated from the Middle Cambrian until their extinction during the.

is an order of trilobites, a group of extinct marine arthropods.

Species assigned to the order Redlichiida are among the first trilobites to appear in the.

Order Corynexochida - a site about the eight orders of trilobites.

The Artiopoda is a grouping of extinct arthropods that includes trilobites and their close relatives.

They are present in the Lower Cambrian fossil record along with trilobites from the Redlichiida, Corynexochida, and Ptychopariida orders.

Bainella is an extinct genus of Devonian trilobites from off the coast of Gondwana.

crustaceans and some other arthropods, such as insects and the extinct trilobites.

corynexochid trilobites which existed from the Early Ordovician period to the Late Silurian period.

They were relatively large trilobites, reaching a length.

eyes in phacopid trilobites is an example of post-displacement paedomorphosis.

The eyes of immature holochroal Cambrian trilobites were basically miniature.

Phacops is a genus of trilobites in the order Phacopida, family Phacopidae, that lived in Europe, northwestern Africa, North and South America and China.

Deltacephalaspis is an extinct genus of trilobites in the order Phacopida.

including brachiopods, clams, corals, crinoids, sea snails, sponges, and trilobites.

The sutures in trilobites' cephalons were unusual because it seems their main function was to create.

Encrinurus is a long-lived genus of phacopid trilobites that lived in what are now Africa, Asia, Australia, Europe, North America, and South America from.

These trilobites are some of the.

The trilobites of this genus have slightly convex exoskeletons with an average length.

to the first appearance of trilobites, about 521 million years ago, though the globally asynchronous appearance of trilobites warrants the use of a separate.

Synonyms:

arthropod;