Title: The Eurypterida of New York
Identifier: CUbiodiversity414805-8540 (find matches)
Year: 1912 (1910s)
Authors: Clarke, John Mason, 1857-1925; Ruedemann, Rudolf, 1864-1956
Subjects: Eurypterida; Paleontology
Publisher: Albany, New York State Education Department
Contributing Library: Cornell University Library
Digitizing Sponsor: Mann Library, Cornell

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36o NEW YORK STATE MUSEUM this telson we may say that there appears to have existed some variation in form, as there is among our specimens one showing the other extreme, namely, a relatively broad form (pi. 72, fig. 3); none of these differences seems sufficient for the erection of new species, since the occurrence of transitional stages is obvious. Moreover, a slight lateral compression which clearly has affected some of the specimens, and specially the type of
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Figure 72 Original figure of Pterygotus Figure 73 Pterygotus buffaloensis 0 u m m i n g s i Grote 8c Pitt Pohlman. The original figures acuticaudatus, is fully competent to produce a like effect (pi. 77, fig. 5). Text figure 75 is a reproduction of the type of P. quadrati- caudatus and plate 76 shows the ultimate segment, which in reality it is, in position in a nearly complete postabdomen. Finally Pohlman cited P. bilobus Huxley and Salter, as among the forms of the waterlime at Buffalo, basing his assertion on a fragment consisting of eight posterior segments. This fragment is preserved in the museum of

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