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15 relations: Alethopteris, Allegheny Mountains, Bituminous coal, Carboniferous, Coal forest, Fern, Fossil, Macroneuropteris, Mazon Creek fossil beds, Nicaise Auguste Desvaux, Pennsylvania, Pennsylvanian (geology), Pteridospermatophyta, Species, St. Clair, Pennsylvania.
Alethopteris
Alethopteris is a prehistoric plant genus of fossil Pteridospermatophyta (seed ferns) that developed in the Carboniferous period (around). It is in the family Alethopteridaceae.
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Allegheny Mountains
The Allegheny Mountain Range, informally the Alleghenies and also spelled Alleghany and Allegany, is part of the vast Appalachian Mountain Range of the eastern United States and Canada and posed a significant barrier to land travel in less technologically advanced eras.
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Bituminous coal
Bituminous coal or black coal is a relatively soft coal containing a tarlike substance called bitumen or asphalt.
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Carboniferous
The Carboniferous is a geologic period and system that spans 60 million years from the end of the Devonian Period million years ago (Mya), to the beginning of the Permian Period, Mya.
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Coal forest
Coal forests were the vast swathes of wetlands that covered much of the Earth's tropical land areas during the late Carboniferous (Pennsylvanian) and Permian times.
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Fern
A fern is a member of a group of vascular plants that reproduce via spores and have neither seeds nor flowers.
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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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Macroneuropteris
Macroneuropteris is a genus of Carboniferous seed plants in the order Medullosales.
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Mazon Creek fossil beds
The Mazon Creek fossil beds are a conservation lagerstätte found near Morris, in Grundy County, Illinois.
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Nicaise Auguste Desvaux
Nicaise Auguste Desvaux (28 August 1784 – 12 July 1856) was a French botanist.
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Pennsylvania
Pennsylvania (Pennsylvania German: Pennsylvaani or Pennsilfaani), officially the Commonwealth of Pennsylvania, is a state located in the northeastern and Mid-Atlantic regions of the United States.
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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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Pteridospermatophyta
The term Pteridospermatophyta (or "seed ferns" or "Pteridospermatopsida") refers to several distinct groups of extinct seed-bearing plants (spermatophytes).
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Species
In biology, a species is the basic unit of classification and a taxonomic rank, as well as a unit of biodiversity, but it has proven difficult to find a satisfactory definition.
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St. Clair, Pennsylvania
St.
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