Whiterockian Series, Kanoshian Stage
Zone N Cephalopods

From the very top of the Kanosh Shale, about 3 meters below the quartzite bed that marks the base of the Lehman Formation.

coiled lateral

Lateral view of portion of a Tarphycerid.


dorsal
Dorsal view showing dorsal siphuncle.

orthocone1
An orthocone showing a few chambers and a mold of the siphuncle.

end view
a view showing the location of the siphuncle.

another orthocone
another orthocone (ventral is up)

end
the end view (ventral is up)

  < Zone L | Home | Chart | on to Osagean (Lower Mississippian)>