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List of index fossils

Index List of index fossils

Index fossils (also known as guide fossils or indicator fossils) are fossils used to define and identify geologic periods (or faunal stages). [1]

26 relations: Argopecten gibbus, Cambrian, Cretaceous, Devonian, Early Pleistocene, Eocene, Fossil, Geologic time scale, Inoceramus, Jurassic, Mississippian (geology), Mucrospirifer, Ordovician, Palmatolepis, Paradoxides, Parafusulina, Pennsylvanian (geology), Perisphinctes, Permian, Quaternary, Scaphites, Silurian, Tertiary, Triassic, United States Geological Survey, Viviparus glacialis.

Argopecten gibbus

Argopecten gibbus (Atlantic calico scallop) is a species of medium-sized edible marine bivalve mollusk in the family Pectinidae, the scallops.

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Cambrian

The Cambrian Period was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon.

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Cretaceous

The Cretaceous is a geologic period and system that spans 79 million years from the end of the Jurassic Period million years ago (mya) to the beginning of the Paleogene Period mya.

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Devonian

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.

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Early Pleistocene

The Early Pleistocene (also known as the Lower Pleistocene) is a subepoch in the international geologic timescale or a subseries in chronostratigraphy, being the earliest or lowest subdivision of the Quaternary period/system and Pleistocene epoch/series.

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Eocene

The Eocene Epoch, lasting from, is a major division of the geologic timescale and the second epoch of the Paleogene Period in the Cenozoic Era.

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Fossil

A fossil (from Classical Latin fossilis; literally, "obtained by digging") is any preserved remains, impression, or trace of any once-living thing from a past geological age.

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Geologic time scale

The geologic time scale (GTS) is a system of chronological dating that relates geological strata (stratigraphy) to time.

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Inoceramus

Inoceramus (Greek: translation "strong pot") is an extinct genus of fossil marine pteriomorphian bivalves that superficially resembled the related winged pearly oysters of the extant genus Pteria.

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Jurassic

The Jurassic (from Jura Mountains) was a geologic period and system that spanned 56 million years from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period Mya.

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Mississippian (geology)

The Mississippian (also known as Lower Carboniferous or Early Carboniferous) is a subperiod in the geologic timescale or a subsystem of the geologic record.

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Mucrospirifer

Mucrospirifer is a genus of extinct brachiopods in the class Rhynchonellata (Articulata) and the order Spiriferida.

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Ordovician

The Ordovician is a geologic period and system, the second of six periods of the Paleozoic Era.

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Palmatolepis

Palmatolepis is an extinct conodont genus in the family Palmatolepidae.

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Paradoxides

Paradoxides is a genus of large to very large trilobites found throughout the world during the Mid Cambrian period.

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Parafusulina

Parafusulina is a genus of foraminifera included in the fusulinacean family Schwagerinidae that were extant during the Permian.

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Pennsylvanian (geology)

The Pennsylvanian (also known as Upper Carboniferous or Late Carboniferous) is, in the ICS geologic timescale, the younger of two subperiods (or upper of two subsystems) of the Carboniferous Period.

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Perisphinctes

Perisphinctes is an extinct genus of ammonite cephalopod.

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Permian

The Permian is a geologic period and system which spans 47 million years from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic period 251.902 Mya.

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Quaternary

Quaternary is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy (ICS).

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Scaphites

Scaphites is a genus of heteromorph ammonites belonging to the Scaphitidae family.

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Silurian

The Silurian is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at million years ago (Mya), to the beginning of the Devonian Period, Mya.

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Tertiary

Tertiary is the former term for the geologic period from 65 million to 2.58 million years ago, a timespan that occurs between the superseded Secondary period and the Quaternary.

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Triassic

The Triassic is a geologic period and system which spans 50.6 million years from the end of the Permian Period 251.9 million years ago (Mya), to the beginning of the Jurassic Period Mya.

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United States Geological Survey

The United States Geological Survey (USGS, formerly simply Geological Survey) is a scientific agency of the United States government.

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Viviparus glacialis

†Viviparus glacialis is an extinct species of fossil freshwater snail, an aquatic gastropod mollusks in the family Viviparidae, the river snails.

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Redirects here:

Guide fossil, Index Fossil, Index Fossils, Index fossil, Index fossils, Zone fossil, Zone fossils.

References

[1] https://en.wikipedia.org/wiki/List_of_index_fossils

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