Order Impunctate
Superfamily Orthacea
Late Ordovician -Cincinnatian

Hebertella occidentalis

Found in the Richmondian. Mid-size brachiopod, rectangular in shape. Identified by both valves being globular, rays running straight to the margin and no coarse cross-hatching of rays with growth lines. Often confused with Plaesiomys subquadratus and Glyptorthis insculpta.


See Hebertella found on field trips

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Photos courtesy of John Tate, Jack Kallmeyer and Bill Heimbrock
Descriptions courtesy of John Tate
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