Overview: Hibernaspidoidei is a taxon of extinct amphiaspidid heterostracan agnathans whose fossils are restricted to Lower Devonian marine strata of Siberia near the Taimyr Peninsula. In life, hibernaspid amp ...

Overview: Pipiscius is an extinct genus of lamprey that lived about 300 million years ago, during the Middle Pennsylvanian Epoch of the Carboniferous Period. The genus contains a single species, P. zangerli, known ...

Overview: Promissum is an extinct genus of conodonts, primitive chordates, that lived during the Upper Ordovician period.

Overview: Hibernaspis is a genus of extinct amphiaspidid heterostracan agnathans whose fossils are restricted to Lower Devonian marine strata of Siberia near the Taimyr Peninsula. In life, species of Hibernaspis ...

Overview: Amphiaspidoidei is a taxon of extinct amphiaspidid heterostracan agnathans whose fossils are restricted to Lower Devonian marine strata of Siberia near the Taimyr Peninsula. In life, the amphiaspidids ...

Overview: Nochelaspis is an extinct genus of galeaspid vertebrates. It lived during the Lochkovian period in Lower Devonian East Asia (in today southeastern China and northern Vietnam).

Overview: Ateleaspis is an extinct genus of primitive ostracoderm fish that lived in the Silurian period (Wenlock Epoch) to the Lower Devonian. Like other ostracoderms, Ateleaspis had a head shield similar to that ...

Overview: Neeyambaspis enigmatica ("Enigmatic shield of Neeyamba Hill") is the lesser known of the two species of pituriaspid agnathans. The species lived in estuaries during the Middle Devonian, in what is now ...

Overview: Pituriaspis doylei is one of two known species of jawless fish belonging to the class Pituriaspida, and is the better known of the two. The species lived in estuaries during the Givetian epoch of the Middle ...

Overview: Jamoytius kerwoodi is an extinct species of primitive, eel-like jawless fish known from the Patrick Burn Formation in Scotland, dating to the Llandovery epoch of the Early Silurian period.

Overview: Pteraspidoidei is an extinct suborder of heterostracan vertebrates. It contains the more derived taxa within Pteraspidiformes, such as Pteraspis and Errivaspis, though, some protopteraspidids, such as ...

Overview: Olbiaspididae is a family of extinct amphiaspidid heterostracan agnathans whose fossils are restricted to Lower Devonian marine strata of Siberia near the Taimyr Peninsula. In life, all amphiaspidids ...

Overview: Gabreyaspididae is a family of extinct amphiaspidid heterostracan agnathans whose fossils are restricted to Lower Devonian marine strata of Siberia near the Taimyr Peninsula. In life, all amphiaspidids ...

Overview: Amphoraspis stellata is an amphiaspidid heterostracan in the family Amphiaspididae. Its fossils are restricted to early Devonian-aged marine strata of the Taimyr Peninsula, Siberia. A. stellata, as with ...

Overview: Amphiaspis argo is the type species of the cyathaspidid taxon Amphiaspidida, and of the family Amphiaspididae. Its fossils are restricted to early Emsian-aged marine strata of the Taimyr Peninsula, Early ...

Overview: Amphiaspididae is a family of extinct amphiaspidid heterostracan agnathans whose fossils are restricted to Lower Devonian marine strata of Siberia near the Taimyr Peninsula. In life, the amphiaspidids ...