Cambrian and Devonian

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Difference between Cambrian and Devonian

Cambrian vs. Devonian

The Cambrian Period was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Devonian is a geologic period and system of the Paleozoic, spanning 60 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya.

Adam Sedgwick

Adam Sedgwick (22 March 1785 – 27 January 1873) was a British priest and geologist, one of the founders of modern geology.

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Arthropod

An arthropod (from Greek ἄρθρον arthron, "joint" and πούς pous, "foot") is an invertebrate animal having an exoskeleton (external skeleton), a segmented body, and paired jointed appendages.

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Baltica

Baltica is a paleocontinent that formed in the Paleoproterozoic and now constitutes northwestern Eurasia, or Europe north of the Trans-European Suture Zone and west of the Ural Mountains.

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Bryozoa

Bryozoa (also known as the Polyzoa, Ectoprocta or commonly as moss animals) are a phylum of aquatic invertebrate animals.

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Climactichnites

Climactichnites is an enigmatic, Cambrian fossil formed on or within sandy tidal flats around.

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Continent

A continent is one of several very large landmasses of the world.

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Geological period

A geological period is one of several subdivisions of geologic time enabling cross-referencing of rocks and geologic events from place to place.

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Gondwana

Gondwana, or Gondwanaland, was a supercontinent that existed from the Neoproterozoic (about 550 million years ago) until the Carboniferous (about 320 million years ago).

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Laurentia

Laurentia or the North American Craton is a large continental craton that forms the ancient geological core of the North American continent.

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List of fossil sites

This list of fossil sites is a worldwide list of localities known well for the presence of fossils.

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Mollusca

Mollusca is a large phylum of invertebrate animals whose members are known as molluscs or mollusksThe formerly dominant spelling mollusk is still used in the U.S. — see the reasons given in Gary Rosenberg's.

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Paleozoic

The Paleozoic (or Palaeozoic) Era (from the Greek palaios (παλαιός), "old" and zoe (ζωή), "life", meaning "ancient life") is the earliest of three geologic eras of the Phanerozoic Eon.

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Series (stratigraphy)

Series are subdivisions of rock layers based on the age of the rock and formally defined by international conventions of the geological timescale.

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Siberia (continent)

Siberia, also known as Angaraland (or simply Angara) and Angarida, is an ancient craton located in the heart of Siberia.

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Supercontinent

In geology, a supercontinent is the assembly of most or all of Earth's continental blocks or cratons to form a single large landmass.

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Trilobite

Trilobites (meaning "three lobes") are a fossil group of extinct marine arachnomorph arthropods that form the class Trilobita.

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