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Trachelocrinidae

Eocrinoidea - Trachelocrinida - Trachelocrinidae

Synonymy list
YearName and author
1973Trachelocrinidae Sprinkle p. 123

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Ambulacraria
phylumEchinodermata
RankNameAuthor
subphylumBlastozoaSprinkle 1973
classEocrinoideaJaekel 1918
orderTrachelocrinidaSumrall 1997
familyTrachelocrinidae
familyTrachelocrinidae

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
ReferenceDiagnosis
J. Sprinkle 1973Eocrinoids (?) with an irregular globular calyx lacking epispires, well-developed columnal-bearing stem, and unusual food-gathering appendages consisting of 3-5 biserial "arms" (= ambulacra?) bearing biserial "pinnules" (= brachioles?) attached together to a single projection containing the mouth on the calyx summit. Middle(?)-late Cambrian.