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Cephalaspidomorphi
Taxonomy
Cephalaspidomorphi was named by Moy-Thomas and Mile (1971).
It was synonymized subjectively with Petromyzontida by van der Laan (2019).
It was assigned to Chordata by Sepkoski (2002); and to Osteostracomorphi by Long (2011), Nelson et al. (2016).
It was synonymized subjectively with Petromyzontida by van der Laan (2019).
It was assigned to Chordata by Sepkoski (2002); and to Osteostracomorphi by Long (2011), Nelson et al. (2016).
Subtaxa
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1971 | Cephalaspidomorphi Moy-Thomas and Mile |
| 2002 | Cephalaspidomorphi Sepkoski |
| 2011 | Cephalaspidomorphi Long p. 241 |
| 2016 | Cephalaspidomorphi Nelson et al. p. 33 |
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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. †Cephalaspidomorphi Moy-Thomas and Mile 1971
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Invalid names: Cephalaspidida Moy-Thomas and Mile 1971 [empty], Galeaspidiformes [empty], Monorhina [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class, subp = subphylum | |||||
| References: Carroll 1988, Kiessling 2004, Hendy et al. 2009 | |||||
Age range: base of the Telychian to the top of the Early/Lower Givetian or 438.60000 to 385.90000 Ma
Collections (10 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Telychian | China (Hunan) | Cephalaspidida indet. (241017) | |
| Lochkovian | United Kingdom (England) | Cephalaspidida indet. (238454) | |
| Eifelian | Latvia | Cephalaspidida indet. (225795 225796 225797) | |
| Eifelian | Estonia | Cephalaspidida indet. (225791 225792 225793 225794) | |
| Early/Lower Givetian | Estonia | Cephalaspidida indet. (225804) |