Browse Items · University of Arkansas Museum

Algae

Algae fossil

Tags: Brown, Fossils, Geology, Gray, Kansas, North America, Pennsylvanian, Plants, United States, Yellow

Algae fossil.

Tags: Fossils, Geology, Gray, Mississippian, Missouri, North America, Plants, United States

Ammonite with traces of two worms.

Tags: Animals, Cephalopods, Extinct, Fossils, Geology, Mollusks, Paleontology

Tags: Animals, Arkansas, Cretaceous, Fossils, Geology, Mesozoic, Mollusks, North America, Paleontology, United States

Calamite fossil specimen.

Tags: Arkansas, Brown, Fossils, Geology, North America, Paleozoic, Plants, United States, Washington County

An ancestor of the present "horse tail", Equisetum; Pennsylvanian

Tags: Arkansas, Brown, Fossils, Geology, North America, Pennsylvanian, Plants, United States

Calamites fossil. Ancestor of Equisetum alethopters fern.

Tags: Arkansas, Fossils, Geology, North America, Pennsylvanian, Plants, United States, Washington County

Tags: Animals, Cenozoic, Fossils, Geology, North America, Oligocene, Paleogene, Paleontology, Tan, United States, Wyoming

Includes six fossilized crinoid segments.

Tags: Animals, Arkansas, Echinoderms, Fossils, Geology, North America, Paleontology, United States

Fossil of crocodilian neural arch (right). Associated with 2016-13-321 and 322.

Tags: Animals, Arkansas, Fossils, Geology, North America, Paleontology, Reptiles, United States