Meadowtownella
Encyclopedia
Meadowtownella is a rare species of Trilobite
found in Ordovician
rocks. It is similar to Acidaspis cincinnatiensis but without the occipital spine.
Some species have been found in Gilwern Hill
in Wales, but tend only to be found in the lower portions of the Kope formation
in Ohio. They are also found in Trenton Group rock units in New York State, Ontario and Quebec.
Trilobite
Trilobites are a well-known fossil group of extinct marine arthropods that form the class Trilobita. The first appearance of trilobites in the fossil record defines the base of the Atdabanian stage of the Early Cambrian period , and they flourished throughout the lower Paleozoic era before...
found in Ordovician
Ordovician
The Ordovician is a geologic period and system, the second of six of the Paleozoic Era, and covers the time between 488.3±1.7 to 443.7±1.5 million years ago . It follows the Cambrian Period and is followed by the Silurian Period...
rocks. It is similar to Acidaspis cincinnatiensis but without the occipital spine.
Some species have been found in Gilwern Hill
Gilwern Hill, Powys
Gilwern Hill is a hill about 3 mi / 5 km southeast of Llandrindod Wells in the county of Powys, Wales.-Geology:The hill is composed from a range of lower and middle Ordovician volcaniclastic rocks which form a part of the Builth Inlier...
in Wales, but tend only to be found in the lower portions of the Kope formation
Kope Formation
The Kope Formation is one of the three component bedrock formations of the Maquoketa Group that primarily consists of shale with some limestone interbedded...
in Ohio. They are also found in Trenton Group rock units in New York State, Ontario and Quebec.