Zeacrinitacea

Belongs within: Dendrocrinida.

The Zeacrinitacea are a group of crinoids with a low, saucer-shaped cup known from the Carboniferous and Permian periods (Moore et al. 1978).

Characters (from Moore et al. 1978): Concave to flat-based low saucer-shaped cup with one to three anal plates, mostly mushroom-shaped tall anal sac and multiple uniserial arms.

Zeacrinitacea
    |  i. s.: ExocrinidaeML78
    |           |--Oxynocrinus Strimple & Watkins 1969ML78
    |           |    `--*O. spicatus Strimple & Watkins 1969ML78
    |           |--Petalambicrinus Strimple 1976ML78
    |           |    `--*P. craddocki Strimple 1976ML78
    |           `--Exocrinus Strimple 1949ML78
    |                |--*E. multirami Strimple 1949ML78
    |                `--E. wanniML78
    |--Scotiacrinus Wright 1945ML78 [ScotiacrinidaeM01]
    |    `--*S. tyriensis (Wright 1937) [=Pachylocrinus tyriensis]ML78
    `--+--Timorechinidae [Timorocrinidae]M01
       |    |--Timorechinus Wanner 1911 [=Timorocrinus Wanner 1912, Timorocystis Lambert 1911]ML78
       |    |    `--*T. mirabilis Wanner 1911 [=*Timorocrinus mirabilis, *Timorocystis mirabilis]ML78
       |    |--Benthocrinus Wanner 1937ML78
       |    |    `--*B. cryptobasalis Wanner 1937ML78
       |    |--Notiocrinus Wanner 1924ML78
       |    |    `--*N. timoricus Wanner 1924ML78
       |    |--Prolobocrinus Wanner 1937ML78
       |    |    `--*P. permicus Wanner 1937ML78
       |    `--Parabursacrinus Wanner 1924ML78
       |         |--*P. procerus (Wanner 1916) [=Bursacrinus procerus]ML78
       |         `--P. nefotassiensisML78
       `--Zeacrinitidae [Zeacrinidae]M01
            |--Alcimocrinus Kirk 1938ML78
            |    `--*A. girtyi (Springer 1926) [=Zeacrinus girtyi]ML78
            |--Parazeacrinites Burdick & Strimple 1971ML78
            |    `--*P. konincki (Bather 1912) [=Zeacrinus konincki]ML78
            |--Sarocrinus Kirk 1942ML78
            |    `--*S. nitidus Kirk 1942ML78
            |--Zeacrinites Troost in Hall 1858 [=Zeacrinus Hall 1858]ML78
            |    |--*Z. magnoliaeformis Troost in Hall 1858 [=*Zeacrinus magnoliaeformis]ML78
            |    `--Z. wortheniML78
            |--Eratocrinus Kirk 1938ML78
            |    |--*E. elegans (Hall 1858) [=Zeacrinus elegans]ML78
            |    `--E. commaticusML78
            |--Linocrinus Kirk 1938ML78
            |    |--*L. wachsmuthi Kirk 1938ML78
            |    `--L. arboreusML78
            |--Xystocrinus Moore & Plummer 1938 [incl. Tholocrinus Kirk 1939]ML78
            |    |--*X. depressus (Hall 1858) [=Zeacrinus depressus]ML78
            |    |--‘Hydreionocrinus’ spinosus Wood 1909 [=*Tholocrinus spinosus]ML78
            |    `--‘Tholocrinus’ wetherbyiU78
            `--Neozeacrinus Wanner 1937ML78
                 |--*N. peramplus Wanner 1937ML78
                 |--N. praecursorML78
                 `--N. uddeniML78

*Type species of generic name indicated

References

[M01] McIntosh, G. C. 2001. Devonian cladid crinoids: families Glossocrinidae Goldring, 1923, and Rutkowskicrinidae new family. Journal of Paleontology 75 (4): 783–807.

[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).