Definition of Protaspis. Meaning of Protaspis. Synonyms of Protaspis

- Protaspis is an extinct genus of pteraspidid heterostracan agnathan which lived during the Early Devonian of the United States, with fossils found in...
- larval stage (called protaspis) has not been found, so it is presumed it was not calcified. The development of Redlichia from protaspis to adult was gradual...
- Mollusca: freshwater Bivalvia (mussels) glochidium Arthropoda: †Trilobita protaspis (unjointed), meraspis (increasing number of joints, but 1 less than the...
- Rhinopteraspis Stegobranchiaspis Gigantaspididae Gigantaspis Protaspididae Protaspis Cosmaspis Lampraspis Europrotaspis Cyrtaspidichthys Oreaspis Psephaspis...
- suborders (Phacopina, Calymenina, and Cheirurina) which share a distinctive protaspis (unsegmented larva ) with three pairs of spines on its body. The Cheirurina...
- Rhinopteraspis Stegobranchiaspis Gigantaspididae Gigantaspis Protaspididae Protaspis Cosmaspis Lampraspis Europrotaspis Cyrtaspidichthys Oreaspis Psephaspis...
- Rhinopteraspis Stegobranchiaspis Gigantaspididae Gigantaspis Protaspididae Protaspis Cosmaspis Lampraspis Europrotaspis Cyrtaspidichthys Oreaspis Psephaspis...
- Emsian-aged marine strata in Water Canyon, Utah, as a member of the genus Protaspis, naming it after one Priscilla Turnbull. As more, successively better...
- within Protaspis as subgenera, or otherwise have been treated as species therein. Species of this genus are very similar to those of Protaspis, but, are...
- Paradoxides was already described by Barrande (in 1852). The earliest stage (protaspis) is a disc with three pairs of spines on the margin. Genal spines are...