| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Archaeaspis
Taxonomy
Archaeaspis was named by Repina (1965) [Sepkoski's age data: Cm Atda-u Sepkoski's reference number: 468,522]. It is not extant. Its type is Archaeaspis hupei.
It was assigned to Olenellida by Sepkoski (2002); and to Archaeaspididae by Palmer and Repina (1993), Whittington et al. (1997), Lieberman (2002).
It was assigned to Olenellida by Sepkoski (2002); and to Archaeaspididae by Palmer and Repina (1993), Whittington et al. (1997), Lieberman (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1965 | Archaeaspis Repina |
| 1993 | Archaeaspis Palmer and Repina p. 29 fig. 9.1 |
| 1997 | Archaeaspis Whittington et al. p. 422 |
| 2002 | Archaeaspis Lieberman p. 701 |
| 2002 | Archaeaspis Sepkoski |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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. †Archaeaspis Repina 1965
show all | hide all
†Archaeaspis hupei Repina 1965
†Archaeaspis macropleuron Lieberman 2002
†Archaeaspis nelsoni Lieberman 2002
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. R. Palmer and L. N. Repina 1993 | Archaeaspididae with glabella slightly ta- pered forward, L4 slightly conical. Interocular area wider than extraocular area opposite midlength of ocular lobe. Posterior tips of ocular lobes approximately opposite oc- cipital furrow. Genal spines short, broad-based. Border broad, convex, well defined; sagittal length greater than length of preglabellar field. Exoskeletal surface strongly reticulate. | |
| B. S. Lieberman 2002 | Frontal lobe of glabella does not contact anterior border furrow; plectrum present; anterior margins of frontal lobe at each side of midline deflected posteriorly at roughly 40 degree angle relative to transverse line; length (sag.) of preglabellar field equal to 0.25–0.7 times length (sag.) of L0; posterior tips of ocular lobes developed opposite medial part of distal margin of L0; ori- entation of S2 straight, abaxially directed inward and posteriorly at roughly 35–45 degree angle to transverse line; midinterocular ridge prominently developed, inclined at roughly 10 degree angle relative to sagittal line. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|
||||
|
|
||||
| Source: f = family, o = order, c = class | |||||
| References: Hendy et al. 2009, Aberhan et al. 2004, Whittington et al. 1997 | |||||
Age range: base of the Montezuman to the top of the Atdabanian or 520.00000 to 516.00000 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Atdabanian | Mongolia | A. sp. (232791) | |
| Montezuman | USA (California) | A. macropleuron (196129 204251) A. nelsoni (219261) A. nelsoni, A. macropleuron (196185 204250) |