p. 1

[blue ruled paper; worn embossing at u.l.: SUPERFINE LAID PAPER [scrolling banner surrounding text]; handwritten page, verso, visible]

Spirifer granulosa, Conrad [Timothy Abbott Conrad (June 21, 1803 in Trenton, New Jersey – August 9, 1877 in Trenton) was an American geologist and malacologist.], N.Y.
Geol. Rep 1839 p. 65; Hall [James Hall Jr. (September 12, 1811 – August 7, 1898) was an American geologist and paleontologist.] . N.Y. Geol Rep
p 206 fig 1.

Trigonal, ventricose, with
numerous minute elevated punctae;
ribs numerous, convex, the interstices
not deeply impressed; inferior valve
bilobed; beak elevated, incurved, foramen
large; superior valve with a wide
medial convex depressed rib, with
a narrow groove down the middle;
umbo prominent, summit rounded.

L 1.25 to 2.50 - H 1.0 to 1.8 D.0.8 to 1.3