Mucrospiriferinae

Belongs within: Spiriferida.

The Mucrospiriferinae are a group of spiriferid brachiopods from the Devonian and Lower Carboniferous. Certain members of this group have been used as index fossils for sections of the Devonian of North America (Norris 1979).

Characters (from Boucot 1975): Growth lamellae closely spaced, lamellose. Radial fimbriae or spines rarely observed, but present on well preserved specimens. Convex, triangular deltidium of varying size present.

<==Mucrospiriferinae
    |--ApousiellaB75
    |--Brevispirifer Cooper 1942B75, BJ65
    |    `--*B. gregarius (Clapp 1857) [=Spirifer gregaria]BJ65
    |--Duryeella Boucot 1857B75
    |    `--*D. macra (Hall 1857) [=Spirifer macra, Spirifera macra]B75
    |--Cumberlandina Boucot 1975B75
    |    `--*C. cumberlandiae (Hall 1857) [=Spirifer cumberlandiae]B75
    |--Mediospirifer Bublichenko 1956B75, BJ65
    |    |--M. audacula (Conrad 1842) [=Delthyris audacula; incl. D. medialis Hall 1843, *Mediospirifer medialis]BJ65
    |    `--M. mediotextusH79
    |--Mucrospirifer Grabau 1931 [=Lamellispirifer Nalivkin 1937]BJ65
    |    |--*M. mucronatus (Conrad 1841)BJ65 [=Delthyris mucronataBJ65, *Lamellispirifer mucronatusBJ65, Spirifer mucronataB75]
    |    |--M. argentariusN79
    |    |--M. consobrinusMB12
    |    |--M. novosibiricusH79
    |    |--M. posterusN79
    |    `--M. reidfordiMB12
    `--Eleutherokomma Crickmay 1950RG04
         |--*E. hamiltoni Crickmay 1950RG04
         |--E. aechmophoraNU83
         |--E. barroisiMB12
         |--E. beardi Crickmay 1950RG04
         |--E. impennis Crickmay 1950RG04 [incl. E. aechmophora Crickmay 1963NU83]
         |--E. implana Norris in McLaren & Norris 1964NU83
         |--E. jasperensisNU83
         |--E. killeri Crickmay 1950RG04
         |--E. leducensis Crickmay 1950RG04
         |--E. legayi (Rigaux 1972)RG04
         |--E. monodi Racheboeuf, Gourvennec et al. 2004RG04
         |--E. multiplicata (Su 1980)RG04
         |--E. nalivkini (Ljashenko 1973)RG04
         |--E. reidofrdi Crickmay 1950RG04
         `--E. zarecznyi (Gürich 1903)RG04

*Type species of generic name indicated

References

[B75] Boucot, A. J. 1975. Evolution and Extinction Rate Controls. Elsevier Scientific Publishing Company.

[BJ65] Boucot, A. J., J. G. Johnson, C. W. Pitrat & R. D. Staton. 1965. Spiriferida. In: Moore, R. C. (ed.) Treatise on Invertebrate Paleontology pt H. Brachiopoda vol. 2 pp. H632–H728. The Geological Society of America, Inc.: Boulder (Colorado), and The University of Kansas Press: Lawrence (Kansas).

[H79] House, M. R. 1979. Devonian in the Eastern Hemisphere. In: Robison, R. A., & C. Teichert (eds) Treatise on Invertebrate Paleontology pt A. Introduction. Fossilisation (Taphonomy), Biogeography and Biostratigraphy pp. A183–A217. The Geological Society of America, Inc.: Boulder (Colorado), and The University of Kansas: Lawrence (Kansas).

[MB12] Mistiaen, B., D. Brice, M. K. Zapalski & C. Loones. 2012. Brachiopods and their auloporid epibionts in the Devonian of Boulonnais (France): comparison with other associations globally. In: Talent, J. A. (ed.) Earth and Life: Global biodiversity, extinction intervals and biogeographic perturbations through time pp. 159–188. Springer.

[N79] Norris, A. W. 1979. Devonian in the Western Hemisphere. In: Robison, R. A., & C. Teichert (eds) Treatise on Invertebrate Paleontology pt A. Introduction. Fossilisation (Taphonomy), Biogeography and Biostratigraphy pp. A218–A253. The Geological Society of America, Inc.: Boulder (Colorado), and The University of Kansas: Lawrence (Kansas).

[NU83] Norris, A. W., & T. T. Uyeno. 1983. Biostratigraphy and paleontology of middle-upper Devonian boundary beds, Gypsum Cliffs area, northeastern Alberta. Geological Survey of Canada Bulletin 313: 1–65.

[RG04] Racheboeuf, P. R., R. Gourvennec, M. Deynoux & D. Brice. 2004. The Devonian of the Hodh area (Islamic Republic of Mauritania): paleontology and stratigraphy. Journal of Paleontology 78 (1): 98–110.