Protitanichthys cf. rockportensis, Cocosteomorph Fish Armor

Submitted by: David Thompson
Taxon: Protitanichthys Rockportensis
Submit date: 2008-01-28
Location (approximate): Milan, Washtenaw, MI
Stratigraphy: Traverse Formation
Age: Erian (Middle Devonian)
Submitter notes: This is a rather large and thick piece of Arthrodire fish armor from the Silica Shale at the Martin-Marrietta Quarry in Milan, Michigan. The shield shows sensory lines at the edges and the characteristic 'bumps' over the bone.

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