Lower Devonian Trilobite
These specimens from a chert bed in the Kalkberg Formation Hannacroix Member near Port Jervis, NY. This ~1” thick bed accumulated brachiopods and the occasional gastropod; parts of Paciphacops sp. are also present. Pictured specimens were recently collected by the neighbor's grandsons. The partial cephalon has a fairly well defined eye, which may permit distinguishing it as a P. hudsoniscus rather than P. Logani (see Trilobites of NY Fig.5.4). The cephalon is protruding from the bottom of the plate shown. Gordon
(scale for cephalon blurred partial penny low rh )