Paleozoic era

In the study, the researchers demonstrate how the comb jellies evolved, describing the organic skeleton it had during the Cambrian period - earliest time division of the Paleozoic Era, extending from 541 million to 485.4 million years ago.

Certain groups of fossils from this key period in the middle Paleozoic Era told one story -- perhaps a freshwater site of origin -- while other groups may point to a birthplace in the open ocean, and still others popped up in other habitat types.

Synopsis: Within West Virginia's irregular borders, formed by winding rivers, high ridges, and the peculiarities of colonial land surveys, is a sedimentary record of the entire Paleozoic Era. Continents colliding along the eastern coast of North America built huge mountains that shed sediment into a shallow inland sea to the west.

The above carbon-14 old-age dating is also consistent for very old ages as are obtained from U/Pb radiometric age dating that has been applied to glacial tillites that occur in the recent Ice Age, in the Paleozoic Era, and then farther and farther back in the Precambrian to very old ages.

Her speciality was documenting crinoids, beautiful sea creatures, from the Paleozoic era. See (right) crinoids found in oceans now.

Papers are organized stratigraphically and analyze carbonate-dominated systems, siliciclastic systems, mixed carbonate and siliciclastics, and evaporite systems deposited during the Paleozoic Era in the Michigan Basin.

The Petoskey Stone is a Devonian-Age fossilized coral from the Paleozoic Era. About 350 million years ago, long before the dinosaurs, parts of the Lower Peninsula lay beneath a shallow, warm, tropical sea.

The Permian period which lasted between 299 to 251 million years ago was the last of the Paleozoic era. This era saw some of the largest milestones in evolution with the arrival of fish, reptiles, insects and early plants on our planet, as well as large-scale movements of Earth's tectonic plates.

The exceptions to the wait-and-see approach mentioned above are the new messaging apps that compete with the likes of Facebook, Twitter and the other platforms people used in the Paleozoic era of social media.

The Chhidru Formation, Western Salt Range, Pakistan represents not only the termination of late Permian period, but also the end of Paleozoic era. This part of the salt range owes its existence because of the Himalayan collision [1].

My own commencement -- back in the Paleozoic Era -- was addressed by Norman Vincent Peale, famed at the time for his series of books with "power'' in their titles, such as "The Power of Positive Thinking.''