Ateleaspis is an extinct genus of primitive ostracoderm fish that lived in the Silurian period (Wenlock Epoch) to the Lower Devonian.[1][2] Like other ostracoderms, Ateleaspis had a head shield similar to that of Cephalaspis. Species from Silurian period were found in Norway and Scotland, but now has been found also in Siberia from Early Devonian period.
| Ateleaspis | |
|---|---|
| |
| Ateleaspis tessellata | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | †Osteostraci |
| Order: | †Atelaspidiformes |
| Family: | †Ateleaspididae |
| Genus: | †Ateleaspis Traquair, 1899 |
| Species: | †A. tessellata
|
| Binomial name | |
| †Ateleaspis tessellata Traquair, 1899
| |
Description
editAteleaspis possibly is the most basal vertebrate with paired fins. Ateleaspis was a small fish (about 15 – 20 cm) and had a flat headshield and a narrow trunk covered by brick-like scales.
References
edit- ^ Ferrón, Humberto G.; Greenwood, Jenny M.; Deline, Bradley; Martínez‐Pérez, Carlos; Botella, Héctor; Sansom, Robert S.; Ruta, Marcello; Donoghue, Philip C. J. (2020). Cavin, Lionel (ed.). "Categorical versus geometric morphometric approaches to characterizing the evolution of morphological disparity in Osteostraci (Vertebrata, stem Gnathostomata)". Palaeontology. 63 (5): 717–732. doi:10.1111/pala.12482. hdl:10550/85577. ISSN 0031-0239. S2CID 218926737.
- ^ Afanassieva, Olga Borisovna. The exoskeleton of Ungulaspis and Ateleaspis (Osteostraci, Agnatha) from the Lower Devonian of Severnaya Zemlya, Russia. OCLC 1228830520.
External links
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