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Aspidagnostus laevis
Taxonomy
Aspidagnostus laevis was named by Palmer (1962). Its type specimen is USNM 143130, a cephalon/head, and it is a 3D body fossil. Its type locality is Duck Creek [Raiff Limestone], which is in a Dresbachian marine limestone in the Raiff Limestone Formation of Nevada.
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1962 | Aspidagnostus laevis Palmer pp. F-15 figs. Pl. 1, fig. 20 |
| 1987 | Aspidagnostus taoyuanensis Peng |
| 1989 | Aspidagnostus pentagonus Lu and Lin |
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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.
†Aspidagnostus laevis Palmer 1962
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Invalid names: Aspidagnostus pentagonus Lu and Lin 1989 [synonym], Aspidagnostus taoyuanensis Peng 1987 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, f = family, o = order | |||||
| References: Whittington et al. 1997, Kiessling 2004, Hendy 2009 | |||||
Age range: base of the Guzhangian to the top of the Sakian or 500.50000 to 492.80000 Ma
Collections (9 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Guzhangian | China (Zhejiang) | Aspidagnostus pentagonus (125675) | |
| Guzhangian | China (Hunan) | Aspidagnostus laevis (49177 49182) Aspidagnostus taoyuanensis (128933) | |
| Sakian | Kazakhstan | Aspidagnostus laevis (118253 118254) | |
| Dresbachian | Canada (Yukon) | Aspidagnostus laevis (55222 55279) | |
| Dresbachian | USA (Nevada) | Aspidagnostus laevis (type locality: 10505) |