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Arctohedridae
Taxonomy
Arctohedridae was named by Williams et al. (2000) [Arctohedridae Williams & Harper, in Williams et al. (2000)]. Its type is Arctohedra.
It was assigned to Protorthoidea by Williams et al. (2000); and to Clitambonitoidea by Williams et al. (2007).
It was assigned to Protorthoidea by Williams et al. (2000); and to Clitambonitoidea by Williams et al. (2007).
Subtaxa
Arctohedra (type genus)
Synonymy list
Year | Name and author |
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2000 | Arctohedridae Williams et al. p. 710 |
2007 | Arctohedridae Williams et al. p. 2680 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Fm. †Arctohedridae Williams et al. 2000
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: o = order, c = class, p = phylum, uc = unranked clade | |||||
References: Aberhan et al. 2004, Bambach et al. 2007, Nesnidal et al. 2013 |
Age range: base of the Middle Cambrian to the top of the Undillan or 509.00000 to 500.50000 Ma
Collections (5 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Solvan | Australia (New South Wales) | Arctohedra alata (56531) | |
Solvan | USA (Alaska) | Arctohedra minima, Arctohedra mertiei (219912) | |
Middle Cambrian | Kyrgyzstan | Arctohedra pyramidalis (116223 192056) | |
Floran - Undillan | Australia (New South Wales) | Arctohedra austrina (9394) |