Definition of Heterostracan. Meaning of Heterostracan. Synonyms of Heterostracan

- Devonian. The heterostracans differed from other Paleozoic agnathan taxa both in the arrangement and histology of their scales. Most heterostracans had two...
- Cyathaspis is the type genus of the heterostracan order Cyathaspidiformes. Fossils are found in late Silurian strata in the Cunningham Cr**** Formation...
- Althaspis is an extinct genus of pteraspidid heterostracan agnathan. Fossils are found in Early Devonian-aged marine strata of Europe "Althaspis". Paleobiology...
- and Gr****: ἀσπίς aspís 'shield') is an extinct genus of pteraspidid heterostracan jawless fish. It lived from the Lochkovian to Eifelian epochs of the...
- Rhinopteraspis is an extinct genus of pteraspidid heterostracan agnathan. "Rhinopteraspis cornubica (McCoy), with notes on the classification and evolution...
- Ariaspis is an extinct genus of cyathaspidiform heterostracan agnathan. Fossils are found in marine strata of Canada and Europe from the late Silurian...
- Palanasaspis chekhivensis is an extinct species of pteraspidid heterostracan agnathan which existed during the Pragian epoch of the early Devonian period...
- Poraspis is an extinct genus of heterostracan. Fossils are found in Late Silurian and Early Devonian marine strata of Norway, Canada and the United States...
- Lepidaspis serrata ("serrated scaly shield") is an extinct heterostracan jawless fish from Early Devonian Canada. Its scientific name refers to the fact...
- Lamiaspis longiripa is an extinct pteraspid heterostracan agnathan vertebrate found in marine strata of Early Devonian Nevada. The generic name translates...