Map showing which states have state fossils (in blue; states without fossils are gray.) The state rock of Pennsylvania is the trilobite. Most do not allow the removal of anything natural or historical. The Devonian trilobite Phacops rana is the Pennsylvania state fossil. Around this time Hadrosaurus foulkii of neighboring New Jersey became the first mounted dinosaur skeleton exhibit at the Academy of Natural Sciences in Philadelphia. The trilobite. Back to MAIN PAGE State fossils or state dinosaurs have been named by 42 of the 50 states. Montour Preserve Fossil Pit 700 Preserve Road Danville, PA 17821 570-336-2060 Click here for more information. A water animal measuring just one to four inches, the (Phacops Rana) lived and left its mark Pennsylvania more than 250 million years ago. The Montour Preserve Fossil Pit consists of approximately one acre of exposed Mahantango Formation shale. Pennsylvania is one of the 50 states in the United States of America.It is in the northeastern part of the country. Pennsylvania, endowed with extensive fossil energy resources, is a leading East Coast supplier of coal, natural gas, electricity, and refined petroleum products to its own industries and to the nation. What is the state fossil of Pennsylvania? The official state fossil of Pennsylvania, Phacops was a common trilobite (three-lobed arthropod) of the Silurian and Devonian periods, about 400 million years ago. Worthenia tabulata is one of the first animal fossils de­ was designated the Pennsylvania state fossil in 1989; middle right, Worthenia tabulata, a fossil snail from near Johnstown, Pa., first described in 1835; and lower left, Alethopteris pennsylvanicus, a seed fern first described in, and named for, Pennsylvania in 1857. By the late 1800s Pennsylvania was the site of formal scientific investigation of fossils. The state rock of Pennsylvania is the trilobite. The state capital of Pennsylvania is Harrisburg.The largest city in Pennsylvania is Philadelphia. Click here to read about some of … One hundred fifty seven years later, the Pennsylvania legislature designated Green’s “variation” the official state fossil of Pennsylvania. Pennsylvania was the third-largest coal-producing state in the nation in 2017, and it was the second-largest coal exporter to foreign markets. Pennsylvania State Fossil Fossil: Trilobite (Phacops rana rana) Age: Devonian ... Vermont has two state fossils designated, a state terrestrial (land) fossil and a state marine fossil. US And Canadian Fossil Sites -- Data for PENNSYLVANIA. An elementary school science class campaigned for this prehistoric invertebrate that lived in Pennsylvania more than 250 million years ago. Related Questions. The Trilobite, (Phacops rana,) was adopted on December 5, 1988. The state capital of Pennsylvania is Harrisburg.The largest city in Pennsylvania is Philadelphia. What did you discover? Official state symbols, emblems, and icons of Pennsylvania - places to see in Pennsylvania - landmarks, parks, historic markers, cities and towns - learn the culture and history of Pennsylvania! Only a few PA state parks allow fossil/rock collecting! Wiki User 2009-09-24 09:36:09.