Cordaites and Calamites are two familiar plants in the Late Pennsylvanian fossil fauna. The two are similar as fossils, presenting as long horizontal grooves in rocks. Cordaites differs from Calamites as the latter has a termination of the groves with occasional perpendicular grooves coming from the presence of nodes. IRead More →

Timothy Conrad’s description of the Paleozoic gastropod Turbo insectus in 1835 was an open and shut case. In his historic, single sentence description, he described and figured a new species of the genus Turbo. His was the first report of North American marine fossils of the Pennsylvanian age. His wasRead More →

Antiquatonia portlockiana

Antiquatonia portlockiana was first described by Norwood and Pratten in 1855 as Producti portlockianus. Much later in 1976, the species was rearranged as Antiquatonia portlockiana by Douglas C. Brew and Stanley S. Beus. Specimens from Armstrong County Brachiopods have been a less-than-common find at the Pine Creek locality. Gastropods, Cephalopods,Read More →

Endelocrinus murrysvillensis

Endelocrinus murrysvillensis is a species of crinoid that was first described in 1967 by John James Burke. Crinoids are a long-lived class of invertebrates that have existed from Ordovician times to the current day. Nicknamed sea lilies, these beautiful sea creatures are often found as small disc-shaped fossils with aRead More →

This tiny late Paleozoic gastropod is most likely identified as Strobeus brevis. Measuring somewhere between four and five millimeters, this snail would be difficult to spot if you were not looking for it. This makes identifying it slightly more difficult, with small morphology to compare. Its spire does have aRead More →