View of the brachial valve of
Victorithyris peterboroughensis
,
Miocene
A
Waconella wacoensis
lampshell
, view of the brachial valve, 16mm along the axis, collected from the Main Street Formation, Denton County, Texas, USA, from the final stage of the Lower Cretaceous (
Albian
)
Zygospira modesta
, an atrypid brachiopod from the Waynesville Formation, Upper Ordovician, southern Ohio.