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Australoscutula ardua
Taxonomy
Australoscutula ardua was named by Cook et al. (2007). Its type specimen is QMF 49522, a shell, and it is not a trace fossil. Its type locality is Marohn. Yoo Loc. 28. 150 m west of Marohn homestead, which is in a Tournaisian carbonate limestone in the Dangarfield Formation of Australia. It is the type species of Australoscutula.
Synonymy list
| Year | Name and author |
|---|---|
| 2007 | Australoscutula ardua Cook et al. pp. 184 – 185 fig. 3 |
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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.
†Australoscutula ardua Cook et al. 2007
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. Cook et al. 2007 | Australoscutula species with patelliform, high conical teleoconch with steep flanks; protoconch relatively small, slender.
Shell steeply patelliform, 1.3 mm high, maximum diameter of 1.6 mm; protoconch at apex in subcentral position with axis nearly perpendicular to apertural plane of teleoconch; protoconch apex pointing downward towards teleoconch aperture; protoconch narrowly turbiniform, comprising more than two whorls; 0.28 mm high (from apex to base) and 0.17 mm wide; first whorl of protoconch tightly coiled with diameter of 0.14 mm; protoconch smooth without conspicuous ornament; base of protoconch round, convex; transition to teleoconch abrupt with rapid expansion of teleoconch after transition; early teleoconch coils such that limpet grows almost in direction of apex of protoconch; teleoconch sides not straight but irregular; teleoconch ornament consists of numerous distinct concentric growth lines; inner side of limpet without remains of columella and clear traces of muscle attachment scars. |
Measurements
No measurements are available
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| Source: c = class | |||||
| Reference: Kiessling 2004 | |||||
Age range: Tournaisian or 358.86000 to 346.70000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Tournaisian | Australia (New South Wales) | Australoscutula ardua (type locality: 44088) |