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Apsotreta
Taxonomy
Apsotreta was named by Palmer (1954) [Sepkoski's age data: Cm Dres-l O Aren-u Sepkoski's reference number: 5]. It is not extant. Its type is Apsotreta expansa.
It was assigned to Acrotretidae by Williams et al. (2000); and to Acrotretida by Sepkoski (2002).
It was assigned to Acrotretidae by Williams et al. (2000); and to Acrotretida by Sepkoski (2002).
Species
A. expansa (type species), A. orifera
Synonymy list
Year | Name and author |
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1954 | Apsotreta Palmer p. 770 |
2000 | Apsotreta Williams et al. p. 107 |
2002 | Apsotreta Sepkoski |
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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.
G. †Apsotreta Palmer 1954
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†Apsotreta expansa Palmer 1954
†Apsotreta orifera Palmer 1954
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: o = order, c = class, uc = unranked clade | |||||
References: Nesnidal et al. 2013, Aberhan et al. 2004 |
Age range: base of the Guzhangian to the top of the Arenig or 500.50000 to 466.00000 Ma
Collections (20 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Guzhangian | USA (Texas) | A. orifera (208649 208668 208762) | |
Paibian | USA (Texas) | A. expansa (208693 208735 208736 208737 208738 208824 208825 208826 208827 208979 208989) | |
Furongian | USA (California) | A. sp. (226276 226282 226283 226284) | |
Arenig | United Kingdom (Shropshire) | A. sp. (43930) | |
Arenig | United Kingdom (England) | A. sp. (3684) |