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20 relations: Alethopteridaceae, Alethopteris, Callipteridium, Carboniferous, Cycad, Family (biology), Gzhelian, Integument, Kasimovian, Macroneuropteris, Medullosales, Mississippian (geology), Moscovian (Carboniferous), Neuropteris, Ohio, Ovule, Permian, Pteridospermatophyta, Rachis, Stele (biology).
Alethopteridaceae
The Alethopteridaceae are a family of extinct plants belonging to Pteridospermatophyta, or seed ferns.
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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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Callipteridium
Callipteridium is an extinct genus of pteridospermous seed ferns belonging to the family Cyclopteridaceae.
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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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Cycad
Cycads are seed plants with a long fossil history that were formerly more abundant and more diverse than they are today.
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Family (biology)
In biological classification, family (familia, plural familiae) is one of the eight major taxonomic ranks; it is classified between order and genus.
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Gzhelian
The Gzhelian is an age in the ICS geologic timescale or a stage in the stratigraphic column.
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Integument
In biology, integument is the natural covering of an organism or an organ, such as its skin, husk, shell, or rind.
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Kasimovian
The Kasimovian is an geochronologic age or chronostratigraphic stage in the ICS geologic timescale.
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Macroneuropteris
Macroneuropteris is a genus of Carboniferous seed plants in the order Medullosales.
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Medullosales
The Medullosales is an order of pteridospermous seed plants characterised by large ovules with circular cross-section, with a vascularised nucellus, complex pollen-organs, stems and rachides with a dissected stele, and frond-like leaves.
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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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Moscovian (Carboniferous)
The Moscovian is in the ICS geologic timescale a stage or age in the Pennsylvanian, the youngest subsystem of the Carboniferous.
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Neuropteris
Neuropteris is an extinct seed fern that existed in the Carboniferous period, known only from fossils.
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Ohio
Ohio is a Midwestern state in the Great Lakes region of the United States.
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Ovule
In seed plants, the ovule is the structure that gives rise to and contains the female reproductive cells.
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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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Pteridospermatophyta
The term Pteridospermatophyta (or "seed ferns" or "Pteridospermatopsida") refers to several distinct groups of extinct seed-bearing plants (spermatophytes).
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Rachis
Rachis is a biological term for a main axis or "shaft" (from the Greek ράχις, backbone, spine).
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Stele (biology)
In a vascular plant, the stele is the central part of the root or stem containing the tissues derived from the procambium.
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Cyclopteridaceae, Neurodontopteridaceae, Parispermaceae.
