Page:The Habitat of the Eurypterida.djvu/93

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a. Bertie fauna of Erie district.

Eurypterids.

Dolichopterus macrochirus

D. siluriceps

Eurypterus lacustris

E. lacustris var. pachychirus

E. pustulosus

Eusarcus scorpionis

Pterygotus buffaloensis

P. cobbi

P. grandis

Associated forms.

Cephalopods—Orthoceras undulatum

Trochoceras gebhardi

Brachipod—Lingula sp.

Ostracod—Leperditia alta

Pelecypod—Goniophora sp.

Pulmonate Gastropods—Hercynella buffaloensis

H. patelliformis

Graptolites—"Buthrotrepis lesquereuxi" (formerly considered a seaweed, now identified by Ruedemann as graptolites)

Ceratiocarid—Ceratiocaris acuminata

Plant—Chondrites graminiformis (may be a graptolite)

b. Bertie fauna of Herkimer district.

Eurypterids.

Dolichopterus macrochirus

D. testudineus

Eurypterus remipes

Pterygotus macrophthalmus

P. cobbi

Associated forms.—Scorpion

Proscorpius osborni

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Eurypterids.

Eurypterus (Onychopterus) kokomoensis

E. ranilarva

Eusarcus newlini

Stylonurus (Drepanopterus) longicaudatus

Associated forms.

Ceratiocarids

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Eurypterids.

Eurypterus fischeri

E. fischeri var. rectangularis