Tannuolina is a genus of tommotiid, belonging to the brachiopod stem lineage.
| Tannuolina | |
|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Order: | †"Tommotiida" |
| Family: | †Tannuolinidae |
| Genus: | †Tannuolina Fonin & Smirnova, 1967 |
| Type species | |
| Tannuolina multifora Fonin & Smirnova, 1967
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| Species | |
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Its phosphatic shells exhibit a complex series of open pores/chambers/channels in outer shell layer.[1][2] It is conventionally interpreted as an essentially bivalved organism, similar to Micrina, though some use the unequal ratio of stellate to mitrate sclerites to argue for a halkieriid-like anatomy.[3]
More recently a tube-like construction inspired by Eccentrotheca has been proposed.[4]
Species edit
References edit
- ^ a b Kouchinsky, A., Bengtson, S. & Murdock, D. J. E. A new tannuolinid problematic from the lower Cambrian of the Sukharikha River in northern Siberia. Acta Pal. Pol. 55, 321–331 (2010).
- ^ Skovsted, C. B. Small shelly fauna from the upper Lower Cambrian Bastion and Ella Island Formations, north-east Greenland. J. Paleontol. 80, 1087–1112 (2006).
- ^ Li, G.-X. & Xiao, S.-H. Tannuolina and Micrina (Tannuolinidae) from the Lower Cambrian of Eastern Yunnan, South China, and Their Scleritome Reconstruction. J. Paleontol. 78(5), 900–913 (2004). doi:10.1666/0022-3360(2004)078<0900:TAMTFT>2.0.CO;2 JSTOR 4094916
- ^ a b Skovsted, C. B., S. Clausen, J. J. Álvaro, and D. Ponlevé. 2014: Tommotiids from the early Cambrian (Series 2, Stage 3) of Morocco and the evolution of the tannuolinid scleritome and setigerous shell structures in stem group brachiopods. Palaeontology 57:171–192. doi:10.1111/pala.12060
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