Brachiopods

Brachiopods are marine invertebrates that lived alongside bivalves during the Paleozoic. Today, they have limited diversity, are outcompeted by bivalves, and live primary in cold, deep waters.

01
Mucrospirifer mucronatus; 4.5cm wide. Collected from upper Wanakah Shale in tributary to Rush Creek by Rich Spencer.
02
Mediospirifer auduculus; 4.5 cm wide. Collected from the upper Wanakah Shale in tributary to Rush Creek by Rich Spencer.
03
Athyris spiriferiodes; 34 mm wide. Collected from lower Windom Shale by Brandon Bialy.
04
Spinatrypa spinosa; 3.4 cm wide. Collected from the lower Windom Shale by Jerry Bastedo.
05
Rhipidomella sp.; 1.8 cm wide. Collected from the lower Windom Shale by Jerry Bastedo.
06
Stropheodonta demissa; largest is 8.9 cm wide. Collected by Dorothy Seville from the Wanakah Shale.

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09
Brachiopod with spines; 3.4 cm wide. Collected by Jerry Bastedo from the Windom Shale.
10
Athyris brachiopod with internal feeding structure: a lophophore. Collected by Bill Regal from the Wanakah Shale.
11
Brachiopod with coral attached; 5.2 cm wide. Collected by Megan Ferguson from the Windom Shale.
12
Unknown brachiopod; 3.3 cm wide. Collected by Jonathan Hoag from the Windom Shale.
13
Stropheodonta; 7.4 cm wide. Collected by Jonathan Hoag from the Windom Shale.
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