Pentametrocrinidae is a family of
echinoderms belonging to the order
Comatulida
Comatulida is an order of crinoids. Members of this order are known as feather stars and mostly do not have a stalk as adults. The oral surface with the mouth is facing upwards and is surrounded by five, often divided rays with feathery pinnules. ...
.
Genera:
* ''
Pentametrocrinus''
Clark, 1908
* ''
Thaumatocrinus''
Carpenter, 1883
References
Comatulida
Echinoderm families
{{crinoidea-stub