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Megasteges septentrionalis
Taxonomy
Aulosteges septentrionalis was named by Etheridge (1907) [Lectotype chosen herein, housed at South Australian Museum]. Its type specimen is SM P2135, a shell (Articulated shell), and it is a mold. Its type locality is Cape Dombey, Port Keats Area, which is in a Wuchiapingian marine horizon in the Upper Marine Beds Formation of Australia.
It was recombined as Megasteges septentrionalis by Archbold (1986), Archbold et al. (1996).
It was recombined as Megasteges septentrionalis by Archbold (1986), Archbold et al. (1996).
Synonymy list
| Year | Name and author |
|---|---|
| 1907 | Aulosteges septentrionalis Etheridge Jr. p. 6 figs. Pl 1, figs 1-5 |
| 1986 | Megasteges septentrionalis Archbold p. 49 figs. 1A-F |
| 1996 | Megasteges septentrionalis Archbold et al. p. 68 fig. 1C |
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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.
†Megasteges septentrionalis Etheridge Jr. 1907
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| shell height | 1 | 24.0 |
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| Source: subo = suborder, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Nesnidal et al. 2013, Williams et al. 2000 | |||||
Age range: Wuchiapingian or 259.51000 to 254.14000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Wuchiapingian | Australia (Northern Territory) | Aulosteges septentrionalis (type locality: 88408) Megasteges septentrionalis (74749) Strophalosia sp. (88409) | |
| Wuchiapingian | Australia (Western Australia) | Megasteges septentrionalis (101405) |