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Archaeaspis nelsoni
Taxonomy
Archaeaspis nelsoni was named by Lieberman (2002). Its type specimen is LACMIP 7371, a partial skeleton (partial cephalon and thorax), and it is a 3D body fossil. Its type locality is UCLA loc. 6748, which is in a Montezuman marine horizon in the Campito Formation of California.
Synonymy list
| Year | Name and author |
|---|---|
| 2002 | Archaeaspis nelsoni Lieberman p. 702 figs. Figure 3.1, 3.3, 3.5–3.7, 3.9 |
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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.
†Archaeaspis nelsoni Lieberman 2002
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| B. S. Lieberman 2002 | Length (sag.) of preglabellar field roughly 0.9–1.2 times length (sag.) of L0; anterior tip of visual surfaces between S2 and S3; axial part of L0 with spine; length (exsag.) of pleural spine on T3 roughly equal to length (exsag.) of pleural spines on T2, T4–T6; prominent anterolateral nodes on thoracic axis. |
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Whittington et al. 1997, Hendy et al. 2009, Aberhan et al. 2004 | |||||
Age range: Montezuman or 520.00000 to 515.30000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Montezuman | USA (California) | Archaeaspis nelsoni (type locality: 196185 204250 219261) |