Blothrocrinidae

Culmicrinus elegans, from Louisville Fossils.

Belongs within: Dendrocrinida.

The Blothrocrinidae are a group of crinoids with isotomously branched arms known from the Carboniferous to the early Permian (Moore et al. 1978).

Characters (from Moore et al. 1978): Crown tall, cylindrical or expanded upward. Cup conical, five or three upflared infrabasals readily visible from side, radial articular facets plenary, bearing transverse ridge and ligament pits; three anals in normal arrangement. Anal sac tall, cylindrical. Arms uniserial, pinnulate, branching two or more times. Stem long, transversely circular.

Blothrocrinidae
    |--Ulrichicrinus Springer 1926 LMW01, ML78
    |    `--*U. oklahoma Springer 1926 ML78
    |--Woodocrinus de Koninck 1854 LMW01, ML78 [incl. Philocrinus de Koninck 1863 ML78]
    |    `--*W. macrodactylus de Koninck 1854 ML78
    |--Nebraskacrinus Moore 1939 LMW01, ML78
    |    `--*N. tourteloti Moore 1939 ML78
    |--Elibatocrinus Moore 1940 ML78
    |    `--*E. leptocalyx Moore 1940 ML78
    |--Fifeocrinus Wright 1951 ML78
    |    `--*F. tielensis (Wright 1936) [=Pachylocrinus tielensis] ML78
    |--Moscovicrinus Jaekel 1918 ML78
    |    `--*M. multiplex (Trautschold 1867) [=Poteriocrinus multiplex] ML78
    |--Stinocrinus Kirk 1941 ML78
    |    `--*S. granulosus Kirk 1941 ML78
    |--Blothrocrinus Kirk 1940 WM03
    |    |--*B. jesupi (Whitfield 1881) [=Poteriocrinus jesupi] ML78
    |    |--B. brevidactylus (Austin & Austin 1843) WM03
    |    |--B. guntherorum Webster 1997 WM03
    |    |--B. litvinovitschae (Yakovlev 1954) WM03
    |    |--B. longidactylus (Austin & Austin 1847) WM03
    |    |--B. swallovi U78
    |    `--B. yazdii Webster, Maples et al. 2003 WM03
    `--Culmicrinus Jaekel 1918 WM03
         |--*C. regularis (Meyer 1858) [=Poteriocrinus regularis] ML78
         |--C. cylindratus Webster, Maples et al. 2003 WM03
         |--C. elegans ML78
         |--C. mammaeformis (Worthen in Miller 1890) WM03
         |--‘Poteriocrinus’ missouriensis J18
         |--C. singulocirrus Schmidt 1930 WM03
         `--C. thomasi ML78

*Type species of generic name indicated

REFERENCES

[J18] Jaekel, O. 1918. Phylogenie und System der Pelmatozoen. Paläontologische Zeitschrift 3: 1–128.

[LMW01] Lane, N. G., C. G. Maples & J. A. Waters. 2001. Revision of Late Devonian (Famennian) and some Early Carboniferous (Tournaisian) crinoids and blastoids from the type Devonian area of north Devon. Palaeontology 44 (6): 1043–1080.

[ML78] Moore, R. C., N. G. Lane, H. L. Strimple, J. Sprinkle & R. O. Fay. 1978. Inadunata. In: Moore, R. C., & C. Teichert (eds) Treatise on Invertebrate Paleontology pt T. Echinodermata 2. Crinoidea vol. 2 pp. T520–T759. The Geological Society of America, Inc.: Boulder (Colorado), and The University of Kansas: Lawrence (Kansas).

[U78] Ubaghs, G. 1978. Skeletal morphology of fossil crinoids. In: Moore, R. C., & C. Teichert (eds) Treatise on Invertebrate Paleontology pt T. Echinodermata 2. Crinoidea vol. 1 pp. T58–T216. The Geological Society of America, Inc.: Boulder (Colorado), and The University of Kansas: Lawrence (Kansas).

[WM03] Webster, G. D., C. G. Maples, R. Mawson & M. Dastanpour. 2003. A cladid-dominated Early Mississippian crinoid and conodont fauna from Kerman Province, Iran and revision of the glossocrinids and rhenocrinids. Journal of Paleontology 77 (Suppl. 3): 1–35.