A peculiar spiny fossil, once thought to represent one of the earliest mollusks, has now been conclusively reclassified by ...

Fossil species that are used to distinguish one layer from another are called index fossils. Index fossils occur for a limited interval of time. Usually index fossils are fossil organisms that are ...

These cephalopods make for ideal index fossils because they are ... that can be easily identified by their suture patterns. Ammonite fossils also reveal information about ancient climates, as ...

A recent study published in Papers in Palaeontology describes the discovery and identification of a new species of ...

To find answers, a team of researchers studied North America’s fossil record ... factors that could have clouded the true diversity patterns of dinosaurs was the lack of rock exposed at the ...

A distinct step change in Earth's history Many patterns of recent ecological change can be documented in the modern fossil record. For example, in the Hawaiian Islands, sediment layers entomb ...

Fossil species that are used to distinguish one layer from another are called index fossils. Index fossils occur for a limited interval of time. Usually index fossils are fossil organisms that are ...