Ptychopariida is a large, heterogeneous order of trilobite containing some of the most primitive species known. The earliest species occurred in th...

Large, natural trilobite in its original fossil matrix. The Asaphid trilobites include some of the most extreme trilobite adaptations known, and th...

Trilobites, an early arthropod relative of spiders, horseshoe crabs, and scorpions, preserved in this level of detail only occurred as a result...

Trilobites, an early arthropod relative of spiders, horseshoe crabs, and scorpions, preserved in this level of detail only occurred as a result of ...

Psychopyge elegans is a trilobite species from the Devonian Hamar Laghdad deposits near Alnif, Morocco. It is a member of the Order Phacopida. The ...

An ineradicable, large Crotalocephalina gibba, Crotalocephalina trilobite is an extinct genus of trilobite in the order Phacopida found in Morocco....

An ineradicable, large Crotalocephalina gibba, Crotalocephalina trilobite is an extinct genus of trilobite in the order Phacopida found in Morocco....

Large, natural trilobite in its original fossil matrix. The Asaphid trilobites include some of the most extreme trilobite adaptations known, and th...

Natural trilobite on its original fossil matrix. The Asaphid trilobites include some of the most extreme trilobite adaptations known, and the group...

Ptychopariida is a large, heterogeneous order of trilobite containing some of the most primitive species known. The earliest species occurred in th...

Ptychopariida is a large, heterogeneous order of trilobite containing some of the most primitive species known. The earliest species occurred in th...

Trilobites, an early arthropod relative of spiders, horseshoe crabs, and scorpions, preserved in this level of detail only occurred as a result of ...

Ptychopariida is a large, heterogeneous order of trilobite containing some of the most primitive species known. The earliest species occurred in th...

Trilobites, an early arthropod relative of spiders, horseshoe crabs, and scorpions, preserved in this level of detail only occurred as a result of ...

Natural its original fossil matrix. The Asaphid trilobites include some of the most extreme trilobite adaptations known, and the group produced som...

Ptychopariida is a large, heterogeneous order of trilobite containing some of the most primitive species known. The earliest species occurred in th...