| Lepidaspis Temporal range:
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Infraphylum: | Agnatha |
| Class: | †Pteraspidomorphi |
| Subclass: | †Heterostraci |
| Order: | †Lepidaspidiformes |
| Family: | †Lepidaspididae |
| Genus: | †Lepidaspis Dineley & Loeffler 1976[1] |
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Lepidaspis serrata ("serrated scaly shield") is an extinct heterostracan jawless fish from Early Devonian Canada. Its scientific name refers to the fact that the armor is composed of hundreds of tiny scales with serrated edges.
Although it is regarded as a heterostracan, its exact placement within Heterostraci is regarded as incertae sedis, as the fact that it is currently impossible to discern where its dorsal and ventral plates (which are made up of a mosaic of the aforementioned tiny scales) end or begin. Some experts regard it as being descended from the basal heterostracans of the Silurian.
References
- ^ Haaramo, Mikko (2007). "†Pteraspidomorphi". Mikko's Phylogeny Archive. Retrieved 30 December 2016.
External links
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This page was last edited on 17 May 2024, at 07:06