Top Results for Asaphida

Kainella is an extinct genus of Early Ordovician trilobites in the family Kainellidae, named by Charles D. Walcott in 1925. It is especially associated with Tremadocian faunas of the Central Andean Basin, where species are documented in northwestern Argentina and southern Bolivia, and it also occurs...

Nileoides is an extinct genus of asaphid trilobites from the Ordovician Period. It is recorded from the Lower to Middle Ordovician and is placed in the family Asaphidae, although its relationships within the group have been discussed because its exoskeleton is strongly effaced, with many surface fur...

Acrocephalaspis is an extinct genus of Cambrian trilobites placed in the family Acrocephalitidae and generally treated within the order Ptychopariida. Its known material includes species from Cambrian rocks in Kazakhstan and the Avalonian cover of Cape Breton Island. The genus is distinguished by a...