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Wallacia laevis
Taxonomy
Cryptonymus laevis was named by Angelin (1851) [The type was a drawing, probably a recomposition of disarticulated parts. Ramsköld and Edgecombe 1994 selected Ar55082 as a neotype when the species was assigned to the genus Wallacia.]. It is a 3D body fossil.
It was recombined as Encrinurus laevis by Lindström (1885); it was recombined as Wallacia laevis by Ramskold and Edgecombe (1994).
It was recombined as Encrinurus laevis by Lindström (1885); it was recombined as Wallacia laevis by Ramskold and Edgecombe (1994).
Synonymy list
| Year | Name and author |
|---|---|
| 1851 | Cryptonymus laevis Angelin pp. 4, pl.4 fig. 10 |
| 1885 | Encrinurus laevis Lindström pp. 52, pl. 13 fig. 7 |
| 1994 | Wallacia laevis Ramskold and Edgecombe p. 93 figs. 2, 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.
†Wallacia laevis Angelin 1851
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| L. Ramskold and G. D. Edgecombe 1994 | Glabellar tuberculation moderately subdued, small tubercles abundant; L1 very short (sag., exsag.); S1 transverse; anterior margin of L0 nearly straight across much of width; distal half of cranidiat posterior border furrow abruptly redirected posterolaterally; genal angle rounded or bearing weak node; rhynchos relatively narrow, angular, projecting a moderate length anterior to border; rachis 38-40% of pygidial width (tr.) anteriorly; 15-16 interring furrows; sagittal tubercles very subdued; mucro greatly reduced, fused 8^2 terminate as triangular point. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Hendy 2009, Aberhan et al. 2004 | |||||
Age range: Sheinwoodian or 432.90000 to 430.60000 Ma
Collections (9 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Telychian - Sheinwoodian | Sweden (Gotland) | Encrinurus laevis (13674) | |
| Sheinwoodian | Sweden (Gotland) | Encrinurus laevis (13591 13675) Wallacia laevis (238658 238661 238662 238663 238664 238667) |