Oligometra serripinna sawtooth feather star, Mottled crinoid

Oligometra serripinna (Carpenter, 1881)

Oligometra serripinna is one of the most abundant crinoids in australian waters. Known from Ashmore Reef, Timor Sea; Lord Howe I., Tasman Sea; Houtman Abrolhos, WA, to Tweed River, NSW, Australia

A flexible crinoid with only ten arms, usually quite small (arm length 30 to 60 mm) but sometimes larger (up to 140 mm). A good ring of cirri. Mottled or banded colour pattern with brown, cream and/or pale yellow.

This species can be found most on reef slopes and patch reefs, clinging to gorgonians and other narrow objects. It is most abundant at sites with a strong flow of water. The biology of Oligometra serripinna is the best known for any species of tropical crinoid.

Class: Crinoidea
Order: Comatulida
Family: Colobometridae
Species: Oligometra serripinna

Known synonyms:
Antedon serripinna Carpenter, 1881 (basionym)
Oligometra caledoniae AH Clark, 1911 (synonym)
Oligometra chinensis AH Clark, 1918 (synonym)
Oligometra concinna AH Clark, 1912 (synonym)
Oligometra erinacea (AH Clark, 1912) (synonym)
Oligometra imbricata AH Clark, 1908 (synonym)
Oligometra occidentalis (AH Clark, 1911) (synonym)
Oligometra pulchella AH Clark, 1908 (synonym)
Oligometra serripinna caledoniae (AH Clark, 1911) (synonym)
Oligometra serripinna chinensis (AH Clark, 1918) (synonym)
Oligometra serripinna erinacea AH Clark, 1912 (synonym)
Oligometra serripinna imbricata (AH Clark, 1908) (synonym)
Oligometra serripinna macrobrachius AH Clark, 1936 (synonym)
Oligometra serripinna occidentalis AH Clark, 1911 (synonym)
Oligometra serripinna serripinna (Carpenter, 1881) (synonym)

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