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Gulosaurus helmi
Taxonomy
Gulosaurus helmi was named by Cuthbertson et al. (2013). Its type specimen is TMP 89.127.3, a partial skeleton (part and counterpart slabs that preserve a partial skeleton of a juvenile ichthyopterygian that includes a near-complete skull and the anterior half of the post), and it is a 3D body fossil. Its type locality is Wapiti Lake, Locality D, which is in a Smithian marine siltstone/limestone in the Sulphur Mountain Formation of Canada.
Synonymy list
| Year | Name and author |
|---|---|
| 2013 | Gulosaurus helmi Cuthbertson et al. p. 832 figs. 1-6, 9 |
| 2016 | Gulosaurus helmi Ji et al. p. 6 |
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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.
†Gulosaurus helmi Cuthbertson et al. 2013
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. S. Cuthbertson et al. 2013 | Small- to medium-sized ichthyopterygian; dorsolaterally directed external naris; prominent anterolateral process of the prefrontal; parietal deeply excavated along its posteromedial margin; squamosal precluded from participating in the margin enclosing the supratemporal fenestra; bicipital cervical ribs; rounded posterior tooth crowns; tooth size small relative to skull width (<0.1); multiple maxillary tooth rows. | |
| C. Ji et al. 2016 | Premaxilla ventral process long; postfrontal
extends medially over the anterior-most margin of the upper temporal fenestra; squamosal participation in the upper tempo- ral fenestra absent; scapula posterior extension absent; anterior teeth cylindrical rather than conical; coracoid facet on scapula equal or smaller than glenoid facet of scapula; intermedium lon- ger than wide. |
Measurements
No measurements are available
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| Source: o = order | |||||
| Reference: Kiessling 2004 | |||||