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Anaspida
Taxonomy
Anaspida was named by Traquair.
It was corrected as Anaspidi by Jaekel (1911); it was reranked as the subclass Anaspida by Dineley and Metcalf (1999); it was reranked as the superclass Anaspida by Blom (2008) and Long (2011); it was reranked as the class Anaspida by Nelson et al. (2016).
It was assigned to Palaeostraci by Jaekel (1911); to Agnatha by Dineley and Metcalf (1999); to Cephalaspidomorphi by Sepkoski (2002); to Vertebrata by Blom (2008); to Craniata by Long (2011); and to Anaspidomorphi by Nelson et al. (2016).
It was corrected as Anaspidi by Jaekel (1911); it was reranked as the subclass Anaspida by Dineley and Metcalf (1999); it was reranked as the superclass Anaspida by Blom (2008) and Long (2011); it was reranked as the class Anaspida by Nelson et al. (2016).
It was assigned to Palaeostraci by Jaekel (1911); to Agnatha by Dineley and Metcalf (1999); to Cephalaspidomorphi by Sepkoski (2002); to Vertebrata by Blom (2008); to Craniata by Long (2011); and to Anaspidomorphi by Nelson et al. (2016).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1911 | Anaspidi Jaekel p. 37 |
| 1999 | Anaspida Dineley and Metcalf p. 11 |
| 2002 | Anaspida Sepkoski |
| 2008 | Anaspida Blom p. 594 |
| 2011 | Anaspida Long p. 241 |
| 2016 | Anaspida Nelson et al. p. 29 |
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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.
Cl. †Anaspida Traquair
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G. †Conopiscius
G. †Jamoytius
G. †Rhyncholepis Kiaer 1911
Invalid names: Anaspidiformes [empty], Jamoytiiformes [empty]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: subp = subphylum, p = phylum | |||||
| References: Carroll 1988, Kiessling 2004 | |||||
Age range
Maximum range based only on fossils: base of the Homerian to the top of the Ohesaare or 430.50000 to 419.20000 Ma
Minimum age of oldest fossil (stem group age): 427.4 Ma
Minimum age of oldest fossil (stem group age): 427.4 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Llandovery - Wenlock | United Kingdom (Scotland) | Jamoytius sp. (26886) | |
| Wenlock | United Kingdom (Scotland) | Cowielepis richiei (26907) | |
| Homerian | Sweden | Rhyncholepis parvula (179986 179989) Rhyncholepis parvula, Rhyncholepis butriangula (179987 179988) | |
| Homerian | United Kingdom (Scotland) | Cowielepis ritchiei (84333) | |
| Rootsikula | Norway | Rhyncholepis parvulus (14308) | |
| Pridoli | Canada (New Brunswick) | Ctenopleuron nerepisense (161318) | |
| Paadla | Estonia (Saaremaa) | Birkeniida sp. (195601) | |
| Ohesaare | Estonia (Saare) | Birkeniida sp. (193837) |