While many questions remain about Keurbos susanae, this fossil stands out as one of the most astonishing examples of ...

A 444-million-year-old fossil named "Sue" preserves internal organs of Keurbos susanae, raising questions about arthropod ...

Learn more about the time period that took place 488 to 443 million years ago. 3 min read During the Ordovician period, part of the Paleozoic era, a rich variety of marine life flourished in the ...

Fossils of 444 million-year-old creatures whose bodies were preserved "inside-out" have been discovered in South Africa.

International scientists have uncovered the oldest known phosphatic stromatoporoid sponge, dating back approximately 480 ...

Sharks have been around for hundreds of millions of years, appearing in the fossil record before trees even existed. But what did they evolve from, are they ‘living fossils’, and how did they survive ...

Menu Local Geology History, Resources, and Facilities Geologic History of Southwestern Ohio At the Limper Geology Museum, you will be able to explore a large collection of local rock, mineral, and ...

Menu Local Geology History, Resources, and Facilities Geologic History of Southwestern Ohio The same forces that cause volcanoes, mountains, and ocean basins also cause climatic changes that have ...

The oldest echinoids come from the Late Ordovician Period and are approximately 450 million years old. The closest sister group to the echinoids are the holothurians and the two groups must have ...