BLASTOID
Submitted by: John Topor
Taxon: Eleutherocrinus cassedayi
Submit date: 2010-11-04
Location (approximate): Arkona, Lambton, ON
Stratigraphy: Hungry Hollow Formation
Age: Erian (Middle Devonian)
Submitter notes: A rare and sought after stemless blastoid that evolved to lay on the substrate. There is only one species worldwide for the genus Eleutherocrinus. This is a basal view, in the living position, of this blastoid's theca. The specimen on the left measures 14mm X 9mm. The middle specimen measures 17mm X 12mm, and the largest specimen on the right measures 19mm X 14.5mm.
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