Echinaria is an extinct genus of brachiopods which lived during the Upper Carboniferous and Lower Permian periods. Its fossils have been found in Eurasia, North America and northern South America.[1]
| Echinaria Temporal range:
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|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Brachiopoda |
| Class: | †Strophomenata |
| Order: | †Productida |
| Family: | †Echinoconchidae |
| Tribe: | †Echinoconchini |
| Genus: | †Echinaria Muir-Wood & Cooper, 1960 |
Description
editLike other echinoconchids, Echinaria had thin, recumbent spines arranged in concentric bands on both valves, as well as a corpus with a planoconvex profile and deep cavity. Members of this genus had cardinal ridges and an elongated outline which widened anteriorly.[1] Echinaria are medium to large-sized echinoconchids, and while notably larger than Echinoconchus, many similarities are observed between the two genera and they are placed in the same subfamily.[2]
Classification
editLeighton & Maples (2002) conducted multiple phylogenetic analyses which are strongly in agreement that the four subfamilies Buxtoniinae, Echinoconchinae, Pustulinae and Juresaniinae form the family Echinoconchidae. The cladogram results of their phylogenetic analyses are displayed in the cladogram below:[2]
References
edit- ^ a b Williams, Alwyn (2000). "Part H Brachiopoda (revised): Volumes 2 & 3, Linguliformea, Craniiformea, Rhynchonelliformea (part)., Treatise on Invertebrate Paleontology". Treatise on Invertebrate Paleontology. Geological Society of America: 510–511. doi:10.17161/dt.v0i0.5209.
- ^ a b Leighton, Lindsey R.; Maples, Christopher G. (July 2002). "Evaluating internal versus external characters: Phylogenetic analyses of the Echinoconchidae, Buxtoniinae, and Juresaniinae (Phylum Brachiopoda)". Journal of Paleontology. 76 (4): 659. doi:10.1666/0022-3360(2002)076<0659:EIVECP>2.0.CO;2. ISSN 0022-3360.