Page:The Habitat of the Eurypterida.djvu/90



In the following lists the eurypterid faunas of the various occur- rences is given, as well as the organisms other than eurypterids which are found associated with them. No account is taken here of single occurrences or of the presence of a few fragments in normal marine faunas.

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Eurypterids.

Dolichopterus breviceps

Eusarcus linguatus

Eurypterus chadwicki

Pterygotus ? nasutus

P. normanskillensis

Stylonurus modestus

Associated organisms. Seaweeds and graptolites.

Rhombodictyon

Climacograptus bicornis

C. bicornis var. peltifer

Cryptograptus tricornis

Dicellograptus gurleyi

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Eurypterids:

Dolichopterus frankfortensis

D. latifrons

Eurypterus ruedemanni

E. pristinus

E. ? stellatus

Eusarcus ? longiceps

E. triangulatus

Hughmilleria shawangunk

Pterygotus ? nasutus

P. prolificus

Stylonurus limbatus

Associated organisms.

In sandy shales, seaweed, Sphenothallus latifolium

In black shales, graptolites and trilobites

Climacograptus bicornis

Triarthrus becki

(Ee1.).

Eurypterids.

Eurypterus acrocephalus

Pterygotus barrandei