Kozlowskia haydenensis (Girty, 1903)
Brachial interior view

Kozlowskia haydenensis (Girty, 1903)
Kozlowskia haydenensis (Girty, 1903)

General abundance:  Uncommon

This is a view of the interior of the brachial valve, showing large
looped ridges that were attachment structures for the feeding organ
(called a lophophore) and muscles. The straight ridge between the
loops is the median septum, a structure useful in recognizing some
brachs. At the top of the photo the stubby projection is the
"cardinal process", a part of the shell extending beyond the
hingeline that provides a place for muscles to attach that can open
and close the two valves of the shell.


Dunbar, C.O. and Condra, G.E., 1932, Brachiopoda of the Pennsylvanian
System in Nebraska; Nebraska Geological Survey, Bulletin 5, p.232,
pl.36, figs.12-17

Hoare, R. D., 1961, Desmoinesian Brachiopoda and Mollusca from
Southwest Missouri; University of Missouri Press, 59, pl.4, figs.9-16

Hoare, R.D., 1968, Pennsylvanian brachiopods of Ohio; Ohio Geological
Survey Bulletin 63, p.39, pl.12, figs.1-5

Phylum Brachiopoda (brachiopods)
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