Category
page 1Lichida

Lichida
alt=Akantharges trilobite fossil|thumb|Akantharges

Arctinurus boltoni
Arctinurus boltoni is a large (up to 30 cm) lichid trilobite of the mid-Silurian. This trilobite reached about eight inches in length, though the normal adult carapace was about four inches. It lived in moderately deep-water in semi-tropical regions. Arctinurus fossils have been found in Europe and North America.
Terataspis
Terataspis is a comparatively huge, 60 centimetre long lichid trilobite genus from the Early Devonian, about 397 million years ago. It lived in a shallow sea in what is now New York State and Ontario. No whole specimens have been found, only disarticulated fragments of its exoskeleton, but enough fragments have been found to allow researchers to form reconstructions of the whole animal. The genus only contains one species, T. grandis.
Acanthopyge
Acanthopyge is an extinct genus of lichid trilobite that lived during the Devonian. Very few A. consanguinea from the Devonian of Oklahoma have been found, and only a handful of complete specimens from Morocco, and many so-called Acanthopyge-specimens from Morocco are fake.
Ceratarges
Ceratarges is a genus of lichid Trilobite from the Middle to late Devonian. It lived in what is now western Europe and Morocco. It averaged around 10 cm (4 inches) in length and 9 cm (3.5 inches) in width.