Eifelian life

Pteraspis (from 'wing' or 'fin' and 'shield') is an extinct genus of pteraspidid heterostracan jawless fish. It existed from the Lochkovian to Eifelian epochs of the Devonian period in areas that are now the Americas and Europe.

Cheirolepis (from , 'hand' and 'scale') is an extinct genus of marine and freshwater ray-finned fish that lived in the Devonian period of Europe and North America. It is the only genus yet known within the family Cheirolepididae and the order Cheirolepidiformes. It was among the most basal of the Devonian actinopterygians and is considered the first to possess the "standard" dermal cranial bones seen in later actinopterygians.

genus of fishes

Gyroptychius is an extinct genus of tetrapodomorphs from the Devonian period.

Carolowilhelmina geognostica is an extinct arthrodire placoderm fish that lived in the Late Eifelian epoch (of Middle Devonian) of Aragon, Spain. In life, C. geognostica was a long-snouted pelagic fish, superficially similar to the Australian Rolfosteus and the European Oxyosteus. It is currently known only from an incomplete cranium that is about long. The fossil material is housed in the Natural Sciences museum of the University of Zaragoza, Spain (Museo de ciencias Naturales de la Universidad de Zaragoza).