The sea lilies and feather stars: the most ancient surviving echinoderm class, filter-feeders with feathery, branching arms surrounding an upward-facing mouth, some species permanently attached to the sea floor by a stalk. Crinoidea was vastly more diverse in the Paleozoic era, when stalked forms covered large areas of shallow sea floor.
Facts
Taxonomic Rank Scientific Name Member Count Band Era First Appeared Disputed
Member Species/Taxa CountApproximate described-species (or, for a genus, described-taxon) count; continually revised as species are newly described, reclassified or synonymized. Classification
Living or Extinct Connections
Child Taxon Of
Parent Taxon Of
Source Wikidata: Antedon Bifida
Sources
1. Wikidata (taxon extant/extinct status)
Wikimedia Foundation / Wikidata contributorsQ33666, descriptionView the Source 2. Catalogue of Life
3. Catalogue of Life (ChecklistBank): Taxon metrics for Crinoidea
Catalogue of Life (ChecklistBank)Taxon metrics, speciesExtantCountQuote, Taxon metrics, speciesExtantCount
"speciesExtantCount": 688
4. Paleobiology Database: Taxon record for Crinoidea
Paleobiology DatabaseTaxon record, first appearance (firstapp_max_ma, early_interval)Quote, Taxon record, first appearance (firstapp_max_ma, early_interval)
"taxon_name": "Crinoidea" ... "firstapp_max_ma": 508.2 ... "early_interval": "Stage 4"
Wikidata: Crinoidea
Wikidata: Antedon Bifida
Parent Taxon Of: Antedon Bifida, Wikidata parent-taxon (P171) chainView the Source Wikipedia: Crinoid
WikipediaIn Group: Echinoderm Classes, LeadQuote, In Group: Echinoderm Classes, Lead
Crinoids are marine invertebrates that make up the class Crinoidea.
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