By the start of the Triassic, all the Earth's landmasses had ... The oceans teemed with the coiled-shelled ammonites, mollusks, and sea urchins that survived the Permian extinction and were ...

Capturing fossil life from the eastern Panthalassan Ocean of the Triassic, the locality that includes the Favret Formation is known for fossils of sea-going creatures like ammonites along with ...

Like Shastasaurus, the Shasta Lake ammonites lived during the Triassic Period, about 231 million years ago, Summers said. Paleontologists have found other Triassic Period fossils throughout Shasta ...

Ammonites, a group of extinct marine mollusks ... Research on the Upper Triassic Polzberg palaeobiota has documented the diverse ammonoid assemblages and their interactions with other marine ...

Based on the fossil record, ammonites came in a wide range of sizes and shapes, from smaller than an inch to as large as nine feet wide. Some ammonites had long, straight shells, while others had ...

Global warming triggered by heavy volcanic activity is hypothesized by some scientists to have caused the end-Triassic extinction event that obliterated up to 80 percent of Earth’s species. These ...

The Triassic period stands out in Earth’s history as the time when dinosaurs first evolved. It was followed by the Jurassic and Cretaceous periods – at the end of the latter, the dinosaurs ...