Eurypterids
Specimen of the Month
Samuel J. Ciurca, Jr., Rochester, New York           by Eurypterids.net
SEPTEMBER 2008
Clarke & Ruedemann 1912
"The Eurypterida of New York"
New York State
For anyone studying or collecting
eurypterids, the monographic THE
EURYPTERIDA OF NEW YORK (2 volumes)
by Clarke & Ruedemann is indispensible. It
is amazing that so many copies were
published 'way back then.' The original
price may have been about $4.00 per
volume, but there are so many copies in
circulation that the set can usually be found
in some bookstores selling old books or
occassionally on Ebay.

LEFT:
A plate bearing the restoration of
Dolichopterus. This genus is well known in
the Late Silurian Bertie Group of New York
and Ontario, Canada.

BELOW:
Plates with a beautifully reconstructed
carcinosomatid -
Paracarcinosoma
scorpionis
from the Williamsville Waterlime
of upstate New York and Ontario, Canada.
EURYPTERID OF THE MONTH
EURYPTERID OF THE MONTH
EURYPTERID OF THE MONTH
MORE EURYPTERID OF THE MONTH PAGES  
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Counter
ABOVE: The plate with the dorsal and ventral views of Hughmilleria socialis. The eurypterid occurs in countless numbers within
the Pittsford Member, Vernon Formation, Salina Group of New York. Examples of actual specimens are shown on other pages of
EURYPTERID OF THE MONTH. Also visit "Prehistoric Pittsford" at
http://eurypterid.net.
ABOVE: The fold-out plate with a very large pterygotid, "Pterygotus buffaloensis." This eurypterid is currently known as Acutiramus
cummingsi.