Micrina
Genus of brachiopods (fossil)
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Micrina is an extinct genus of tommotiids with affinities to brachiopods.[1]
Order:Tommotiida
Genus:†Micrina
Laurie, 1986
Laurie, 1986
| Micrina | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Order: | Tommotiida |
| Genus: | †Micrina Laurie, 1986 |
| Type species | |
| Platyceras etheridgei Tate, 1892 | |
| Species | |
| |
Micrina can be considered a stem group brachiopod based on its larval shell.[2]
Its microstructure is very brachiopod like[3] and its adult morphology is similarly bivalved,[4] even though it was once thought to be halkieriid-like.[5]
Micrina is quite similar to Mickwitzia in terms of shell microstructure. The two genera are evidently closely related.
Species
- M. etheridgei (Tate, 1892)
- M. pusilla Gravestock et al., 2001
- M. ridicula (Barskova, 1988)
- M. xiaotanensis Li & Xiao, 2004[6]
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