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.
view of portion of a Tarphycerid.
showing dorsal siphuncle.
An orthocone showing a few chambers and a mold of the siphuncle.
a view showing the location of the siphuncle.
another orthocone (ventral is up)
the end view (ventral is up)
Zone L | Home | Chart | on to
Osagean (Lower Mississippian)>