Zeacrinitacea

Neozeacrinus praecursor crown, from Moore et al. (1978).

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.: Exocrinidae ML78
    |           |–Oxynocrinus Strimple & Watkins 1969 ML78
    |           |    `–*O. spicatus Strimple & Watkins 1969 ML78
    |           |–Petalambicrinus Strimple 1976 ML78
    |           |    `–*P. craddocki Strimple 1976 ML78
    |           `–Exocrinus Strimple 1949 ML78
    |                |–*E. multirami Strimple 1949 ML78
    |                `–E. wanni ML78
    |–Scotiacrinus Wright 1945 ML78 [Scotiacrinidae M01]
    |    `–*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 1937 ML78
       |    |    `–*B. cryptobasalis Wanner 1937 ML78
       |    |–Notiocrinus Wanner 1924 ML78
       |    |    `–*N. timoricus Wanner 1924 ML78
       |    |–Prolobocrinus Wanner 1937 ML78
       |    |    `–*P. permicus Wanner 1937 ML78
       |    `–Parabursacrinus Wanner 1924 ML78
       |         |–*P. procerus (Wanner 1916) [=Bursacrinus procerus] ML78
       |         `–P. nefotassiensis ML78
       `–Zeacrinitidae [Zeacrinidae] M01
            |–Alcimocrinus Kirk 1938 ML78
            |    `–*A. girtyi (Springer 1926) [=Zeacrinus girtyi] ML78
            |–Parazeacrinites Burdick & Strimple 1971 ML78
            |    `–*P. konincki (Bather 1912) [=Zeacrinus konincki] ML78
            |–Sarocrinus Kirk 1942 ML78
            |    `–*S. nitidus Kirk 1942 ML78
            |–Zeacrinites Troost in Hall 1858 [=Zeacrinus Hall 1858] ML78
            |    |–*Z. magnoliaeformis Troost in Hall 1858 [=*Zeacrinus magnoliaeformis] ML78
            |    `–Z. wortheni ML78
            |–Eratocrinus Kirk 1938 ML78
            |    |–*E. elegans (Hall 1858) [=Zeacrinus elegans] ML78
            |    `–E. commaticus ML78
            |–Linocrinus Kirk 1938 ML78
            |    |–*L. wachsmuthi Kirk 1938 ML78
            |    `–L. arboreus ML78
            |–Xystocrinus Moore & Plummer 1938 [incl. Tholocrinus Kirk 1939] ML78
            |    |–*X. depressus (Hall 1858) [=Zeacrinus depressus] ML78
            |    |–‘Hydreionocrinus’ spinosus Wood 1909 [=*Tholocrinus spinosus] ML78
            |    `–‘Tholocrinus’ wetherbyi U78
            `–Neozeacrinus Wanner 1937 ML78
                 |–*N. peramplus Wanner 1937 Ml78
                 |–N. praecursor ML78
                 `–N. uddeni ML78

*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).

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