Family PENTAMETROCRINIDAE
Compiler and date details
2012 - Tim O'Hara, Museum Victoria, Carlton, Victoria, Australia
2001 - Tim O'Hara, Museum Victoria, Carlton, Victoria, Australia
1995 - F.W.E. Rowe & J. Gates, Australian Museum, Sydney, New South Wales, Australia
Introduction
The family Pentametrocrinidae is known from Japan to the Antarctic, New Zealand, and the Indian and Atlantic Oceans. Two genera are known and one species in one of these is recorded in Australian waters.
This comatulid family is similar to Antedonidae but is distinguished by the following combination of character states: radials 5 or 10, with corresponding number of arms; arms undivided; IBr series absent, first brachials arising from radials; first syzygy between 4+5, and with variable intervals distally.
General References
Clark, A.H. & Clark, A.M. 1967. A monograph of the existing crinoids. Vol. 1. The comatulids. Part 5. — Suborders Oligophreata (concluded) and Macrophreata. Bulletin of the United States National Museum 82: 1-860 figs 1-53
Rasmussen, H.W. & Sieverts-Doreck, H. 1978. Articulata. pp. T813-T1027, figs 549-619 in Moore, R.C. & Teichert, C. (eds). Treatise on Invertebrate Paleontology. Part T. Echinodermata 2. Crinoidea. Kansas : Geological Society of America and University of Kansas Press Vol. 3.
History of changes
| Published | As part of group | Action Date | Action Type | Compiler(s) |
|---|---|---|---|---|
| 15-Sep-2023 | 11-Dec-2012 | MODIFIED | ||
| 12-Feb-2010 | (import) |