Third view showing the 'pipe' in which the crinoid was preserved.

Submitted by: David Thompson
Taxon: Botryocrinus thomasi
Submit date: 2008-11-23
Location (approximate): Alpena, Alpena, MI
Stratigraphy: Thunder Bay Formation
Age: Erian (Middle Devonian)
Submitter notes: This shows the curved nature of the matrix in which the crinoid was washed(?) and covered with additional matrix to preserve all.

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