Eucalyptocrinitidae

Eucalyptocrinites, copyright Wilson44691.

Belongs within: Glyptocrinina.

The Eucalyptocrinitidae are a group of crinoids known from the Middle Silurian to the Middle Devonian (Ubaghs 1978b).

Characters (from Ubaghs 1978b): Calyx typically with narrow, moderately deep basal concavity having sides composed of four basals and proximal parts of radials; fixed primibrachs one or two, fixed secundibrachs two, and fixed tertibrachs one in each ray, followed by free arms; each interray with single large interprimibrach followed by two smaller ones, each ray with single interbrachial between secundibrachs of branched fixed brachs; CD interray undifferentiated from others. Tegmen elevated, stoutly built of relatively large plates in circlets or alternating, disposed around central hollow cylinder, produced laterally to form vertical partitions between arm alcoves or lacking these. Transversely circular colum with small pentastellate axial canal and radicular holdfast.

Eucalyptocrinitidae [Calyptocrinidae, Calyptocrinidées, Eucalyptocrinidae, Polycrinidae, Polycrinides]
    |–Chicagocrinus Weller 1900 EB01
    |    `–*C. ornatus Weller 1900 [=Calliocrinus ornatus] U78b
    |–Aclistocrinus Eckert & Brett 2001 EB01
    |    `–*A. capistratus Eckert & Brett 2001 EB01
    |–Calliocrinus d’Orbigny 1849 EB01 (see below for synonymy)
    |    |–*C. costatus (Hisinger 1837) (see below for synonymy) U78b
    |    `–‘*Cryptodiscus’ bilobus Weller 1897 U78b
    |–Archaeocalyptocrinus Witzke & Strimple 1981 EB01
    |    |–*A. nodosus EB01
    |    |–‘Eucalyptocrinites’ obconicus (Hall 1865) EB01
    |    `–‘Eucalyptocrinites’ slocomi Foerste 1920 EB01
    `–Eucalyptocrinites Goldfuss 1831 EB01 (see below for synonymy)
         |–*E. rosaceus Goldfuss 1831 EB01 [=*Eucalyptocrinus rosaceus U78b]
         |–*Crinocystites’ chrysalis Hall 1864 [=*Crinocystis chrysalis] U78b
         |–E. crassus U78b
         |–*Hypanthocrinites’ decorus Phillips in Murchison 1839 [=*Hypanthocrinus decorus] U78b
         |–E. ovalis U78a
         |–E. proboscidalis U78b
         `–E. tuberculatus U78a

Calliocrinus d’Orbigny 1849 EB01 [=Callicrinus Angelin 1878 U78b, Calliocrinites Chapman 1857 U78b, Cryptodiscus Hall 1867 non Corda 1838 (ICBN) U78b]

*Calliocrinus costatus (Hisinger 1837) [=Eugeniacrinites costatus, *Callicrinus costatus, *Calliocrinites costatus] U78b

Eucalyptocrinites Goldfuss 1831 EB01 [=Eucalyptocrinus Agassiz 1836 U78b, Eucalyptrocrinites (l. c.) U78b; incl. Crinocystites Hall 1864 U78b, Crinocystis Haeckel 1896 U78b, Hypanthocrinites Phillips in Murchison 1839 U78b, Hypanthocrinus Morris 1843 U78b]

*Type species of generic name indicated

REFERENCES

[EB01] Eckert, J. D., & C. E. Brett. 2001. Early Silurian (Llandovery) crinoids from the Lower Clinton Group, western New York State. Bulletins of American Paleontology 360: 1–88.

[U78a] Ubaghs, G. 1978a. 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).

[U78b] Ubaghs, G. 1978b. Camerata. In: Moore, R. C., & C. Teichert (eds) Treatise on Invertebrate Paleontology pt T. Echinodermata 2. Crinoidea vol. 2 pp. T408–T519. The Geological Society of America, Inc.: Boulder (Colorado), and The University of Kansas: Lawrence (Kansas).

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