Cheiropterasteridae gen. et sp. indet.
(line drawing by V. Petr and F. H. C.
Hotchkiss)
Cheiropterasteridae gen. et sp. indet.
(line drawing by V. Petr and F. H. C.
Hotchkiss)
Upper Figure:
a) Oegophiurid Loriolaster mirabilis, a schematic sketch of a specimen from Hunsruck Slate (Lower Devonian of Germany, Emsian) showing alternating ambulacrals from oblique apical view.
b) Similar oegophiurid Cheiropterasteridae gen. et sp. indet., a schematic reconstruction of part of an arm from Lodenice Limestone (Lower Devonian of Bohemia, Pragian) drawn from isolated ambulacrals and showing an interesting structural analogue with biserially arranged arm plates of some crinoids.
Lower Figure:
Cheiropterasteridae gen. et sp. indet., a schematic sketch of an isolated ambulacral ossicle from the Lodenice Limestone (Lower Devonian of Bohemia, Pragian) which shows:
a) sharp median keel on the median side of
the ossicle serving for accommodation of two opposing Ambb,
b) channel-like furrow for radial water
vessel (RWV) with a small pore for lateral branch of RWV,
c) ornament on the lateral margin of the
ambulacral ossicle consisting generally of a double-row of about seven distinct
knobs,
d) distinct podial
basin with a small pore for the tube foot.
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