trilobite's Usage Examples:

Proarticulata species Praecambridium sigillum, that superficially resembles a trilobite, the term is also used to describe the anterior part of the animal.

Phacopida ("lens-face") is an order of trilobite that lived from the Late Cambrian to the Late Devonian.

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

In insects, crustaceans, and the extinct trilobites, the thorax is one of the three main divisions of the creature's body.

Ptychopariida is a large, heterogeneous order of trilobite containing some of the most primitive species known.

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

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

Corynexochida is an order of trilobite that lived from the Lower Cambrian to the Late Devonian.

Like many of the other trilobite orders, Corynexochida contains.

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.

first appearance of two trilobite genera, Olenellus or Redlichia.

Another proposal is the first appearance of the trilobite species Arthricocephalus.

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

Both begin with the first appearance of the trilobite Glyptagnostus reticulatus around 497 million years ago.

Asaphidae is a family of asaphid trilobites.

trilobites (the earliest) and survived until the Permian extinction.

The more complex schizochroal eye was found only in one sub-order of trilobite,.

Proetida is an order of trilobite that lived from the Ordovician to the Permian.

It was the last order of trilobite to go extinct, finally dying out in.

Synonyms:

arthropod;