Let us remember, then, that, in the Silurian period, the world, so far as it was raised above the ocean, was a beach, and let us seek there for such creatures as God has made to live on sea-shores ...

Graptolites show us how unpredictable the Silurian period really could be. What graptolites tell us is a story of incredible changes in the ocean, of periods where the oceans became poisonous and ...

A newly discovered fossil “treasure hoard” dating back some 436 million years to the early Silurian period reveals, for the first time, the complete body shape and form of some of the first ...

Object Details Creator Smithsonian Institution Photographic Services Division Subject Museum of Natural History (U.S.) Notes Updated as part of the Exhibits Modernization Program. See United States ...

The Silurian Period is characterised by a dynamic interplay between environmental stressors and biotic turnover, with extinction events and carbon isotope excursions (CIEs) representing pivotal ...

In recent years, paleontologists have found scales and other bits that suggest the presence of jawed fish during the Silurian period, which lasted from 443.8 million to 419.2 million years ago.

Object Details author Shaw, Scott R (Scott Richard) Contents Time travel with insects -- The buggy planet -- Rise of the arthropods -- The Cambrian period, 541-485 million years ago, and the ...

The fact that these fossils were ancient ancestors to modern sharks suggests that the split between cartilaginous and bony fish happened before the early Silurian period, something researchers did not ...