Crinoid Holdfast

Submitted by: Mike Topor
Taxon: Ancyrocrinus bulbosus
Submit date: 2008-03-30
Location (approximate): Arkona, Lambton, ON
Stratigraphy: Arkona Formation
Age: Erian (Middle Devonian)
Submitter notes: Ancyrocrinus holdfasts are considered uncommon in the shale. This specimen retains two of the anchor points and a portion of the stem is attached. The square stem is a feature of this crinoid species. The length of the holdfast and stem is 78mm. The anchor points are approx. 35mm long.

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