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12 relations: Agnostida, Animal, Arthropod, Cambrian, Cambrian Stage 4, Extinction, Fossil, Genus, Peronopsidae, Trilobite, Trilobite zone, Type (biology).
Agnostida
Agnostida is an order of arthropod which first developed near the end of the Early Cambrian period and thrived during the Middle Cambrian.
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Animal
Animals are multicellular eukaryotic organisms that form the biological kingdom Animalia.
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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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Cambrian
The Cambrian Period was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon.
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Cambrian Stage 4
Cambrian Stage 4 is the still unnamed 4th stage of the Cambrian and the upper stage of the 2nd Cambrian series.
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Extinction
In biology, extinction is the termination of an organism or of a group of organisms (taxon), normally a species.
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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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Genus
A genus (genera) is a taxonomic rank used in the biological classification of living and fossil organisms, as well as viruses, in biology.
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Peronopsidae
The Peronopsidae (which may also be called peronopsids) comprise the earliest family of the Agnostina suborder.
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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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Trilobite zone
Trilobites are used as index fossils to subdivide the Cambrian period.
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Type (biology)
In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached.
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