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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Proetus nemus was named by Chatterton (1971).
It was recombined as Ryckholtia nemus by Lutke (1990).
It was recombined as Ryckholtia nemus by Lutke (1990).
Synonymy list
| Year | Name and author |
|---|---|
| 1971 | Proetus nemus Chatterton pp. 65-67 figs. Pl. 16 f. 18-32 |
| 1990 | Ryckholtia nemus Lutke p. 21 |
| 2004 | Proetus nemus Edgecombe and Wright pp. 179 - 184 figs. 2a-p, 3a-t |
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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.
†Proetus nemus Chatterton 1971
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| G. D. Edgecombe and A. J. Wright 2004 | Proetus with relatively elongate, tapering glabella, its posterior two thirds with dense, mostly moderate sized tubercles, its anterior third granulate. Facial suture divergent between γ and β. Genal ridge strong along projection. Panderian notch deep, U-shaped.
Pygidium subsemicircular, length (excluding articulating half ring) 55-60% width. Axial width about 35% pygidial width anteriorly; axial furrows narrow, uniformly impressed along most of length. Seven axial rings and short, lunate terminal piece (7+1); first one or two ring furrows lengthened medially as short preannulus; more posterior ring furrows shallower but with moderately deep incision across axis, posterior few gently convex backwards; axis raised strongly above pleurae, gently convex in sagittal profile, moderately arched (tr.); rings with dense small tubercles or coarse granules. Postaxial region about 20% length of pygidium. Pleural furrows narrow (exsag.), anteriorly convex, anterior three or four well impressed, fifth and variably sixth faintly discernible; first pleural furrow terminates near pygidial lateral margin, others terminate at shallow posterior border furrow; interpleural furrows narrower and shallower than pleural furrows; pleural ribs with sculpture of dense, medium sized granules. Border widening back to its intersection with third pleural furrow, then maintaining even width, occupying most of postaxial region, weakly convex. Doublure extending in nearly as far as border furrow, bearing several terrace lines. |
Measurements
No measurements are available
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| Source: g = genus, f = family, o = order, c = class | |||||
| References: Harrington et al. 1959, Hendy 2009, Fortey and Owens 1999, Aberhan et al. 2004 | |||||
Age range: Early/Lower Emsian or 409.10000 to 402.50000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Emsian | Australia (New South Wales) | Proetus nemus (224279) |