Plio-Pleistocene deep-sea crinoid (Echinodermata) diversity from the western Rodrigues Ridge, Indian Ocean, revealed by microfossil evidence Author Roux, Michel Muséum national d’Histoire naturelle, UMR 7205 ISYEB MNHN-CNRS-UPMC-EPHE, Département Systématique et Évolution, CP 51, 57 rue Cuvier, 75231 Paris Cedex 05, France. Author Thuy, Ben National Museum of Natural History Luxembourg, 25 rue Münster, L- 2160 Luxembourg City, Luxembourg. Author Gale, Andy S. School of the Environment, Geography and Geological Sciences, University of Portsmouth, Burnaby Building, Burnaby Road, Portsmouth PO 1 3 QL UK. & Department of Earth Sciences, Natural History Museum, Cromwell Road, London SW 7 5 BD, UK. text Zootaxa 2025 2025-02-04 5583 3 509 525 https://doi.org/10.11646/zootaxa.5583.3.5 journal article 308085 10.11646/zootaxa.5583.3.5 46919b01-2f24-4ddc-9980-89f6ee4dc424 1175-5326 14804595 E6BC5024-7577-46A6-A1C3-F6B2BEBF1C5D

TABLE 3. Quantitative characters of Porphyrocrinus polyarthra columnals from the site RR13A on the western Rodrigues Ridge. Listed from distal (above) to proximal (below), Ap: proximal facet. H: columnal height, D: maximum facet diameter, d: minimum facet diameter, dist: distal facet, dist mes: dististele-mesistele transition, distmost: near distal stalk end, prox: proximal facet. Values in mm, except ratios.

Catalogue n°	H	D	d	H/D	D/d	place	remark
OPH202 dist	3.23	4.55	4.15	0.71	1.10	distmost	not figured
OPH202 prox	3.23	4.25	3.80	0.76	1.12	distmost	Fig. 3E
OPH203 a	2.15	1.60	1.43	1.34	1.12	distal	not figured
OPH203 b	1.80	1.40	1.25	1.29	1.12	distal	not figured
OPH203 c	2.19	1.95	1.75	1.12	1.14	distal	not figured
OPH201	2.95	2.90	2.40	1.02	1.21	dist mes	Fig. 3C–D
OPH203 d	2.40	2.12	1.75	1.13	1.21	dist mes	not figured
OPH200	3.15	2.95	2.35	1.07	1.25	dist mes	Fig. 3B
OPH203 e	2.50	1.70	1.50	1.47	1.13	mid mes	not figured
OPH199	2.06	1.35	1.20	1.53	1.12	mid mes	Fig. 3A
OPH203 f	broken	1.30	1.15	-	1.13	mid mes	not figured