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Gaka
Taxonomy
Species lacking formal opinion data
Entered
by T. Schossleitner (authorized by W. Kiessling) on 2006-04-26; modified by T. Schossleitner on 2013-10-27
Synonymy list
| Year | Name and author |
|---|---|
| 1990 | Gaka Kruse p. 45 |
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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.
G. †Gaka Kruse 1990
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. D. Kruse 1990 | Conch straight or dorsoventrally curved near apex; transverse section pentagonal-lensoid; dorsoventral margin sharply keeled; dorsum with three sharp rounded longitudinal keels (one median, two lateral) dividing it into four lateral faces; venter with broad median longitudinal convexity; sculpture of transverse ribs or rugae; one or more sinuses on dorsal rim of aperture, approximatley corresponding to keels; aperture dorsally orthoginal to amblygonal |
Measurements
No measurements are available
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| Source: p = phylum | |||||
| Reference: Hendy et al. 2009 | |||||
Age range: Middle Cambrian or 506.50000 to 497.00000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Cambrian | Australia (Northern Territory) | G. gakawurin (60045) |