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Jimbacrinus
Classification
Phylum:
Echinodermata
Class:
Crinoidea
Order:
Cladida
Superfamily:
Calceolispongiacea
Family:
Calceolispongiidae
Formal Genus Name and Reference:
Jimbacrinus TEICHERT, 1954, p. 71
Type Species:
bostocki, OD
Images
(Click to enlarge in a new window)
Fig. 501, 2. * J. bostocki, 2a-c, C-ray, dorsal and C D-interray views of crown, x1 (Teichert, 1954)"
Synonyms
Geographic Distribution
W.Australia
Age Range
Beginning Stage in Treatise Usage:
L.Perm. (Artinsk.)
Beginning International Stage:
Artinskian
Fraction Up In Beginning Stage:
0
Beginning Date:
290.51
Ending Stage in Treatise Usage:
L.Perm. (Artinsk.)
Ending International Stage:
Artinskian
Fraction Up In Ending Stage:
100
Ending Date:
283.3
Description
Cup large, bowl shaped with shallow invagination below, basals very large, hexagonal, mammillate, ornamented with 1 to 3 tubercles, radials pentagonal, equal, smaller than basals, bearing one or more tubercles, separated in CD interray by anal X, radial arm facets form entire upper surface of plates, inclined outward-upward, anal X quadrangular, height equal to lateral radial facets, with one to several tubercles. Arms uniserial, pinnulate, primibrachs 1 and 2 trapezoidal, weakly tuberculate, distal brachials cuneiform. Stem small relative to cup size, with alternating long and short columnals.
References
Museum or Author Information
Classification
Phylum:
Echinodermata
Class:
Crinoidea
Order:
Cladida
Superfamily:
Calceolispongiacea
Family:
Calceolispongiidae
Formal Genus Name and Reference:
Jimbacrinus TEICHERT, 1954, p. 71
Type Species:
bostocki, OD
Images
(Click to enlarge in a new window)
Fig. 501, 2. * J. bostocki, 2a-c, C-ray, dorsal and C D-interray views of crown, x1 (Teichert, 1954)"
Synonyms
Geographic Distribution
W.Australia
Age Range
Beginning Stage in Treatise Usage:
L.Perm. (Artinsk.)
Beginning International Stage:
Artinskian
Fraction Up In Beginning Stage:
0
Beginning Date:
290.51
Ending Stage in Treatise Usage:
L.Perm. (Artinsk.)
Ending International Stage:
Artinskian
Fraction Up In Ending Stage:
100
Ending Date:
283.3
Description
Cup large, bowl shaped with shallow invagination below, basals very large, hexagonal, mammillate, ornamented with 1 to 3 tubercles, radials pentagonal, equal, smaller than basals, bearing one or more tubercles, separated in CD interray by anal X, radial arm facets form entire upper surface of plates, inclined outward-upward, anal X quadrangular, height equal to lateral radial facets, with one to several tubercles. Arms uniserial, pinnulate, primibrachs 1 and 2 trapezoidal, weakly tuberculate, distal brachials cuneiform. Stem small relative to cup size, with alternating long and short columnals.