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Pentamerus palaformis
Taxonomy
Pentamerus palaformis was named by Jin and Copper (2000) [= 1928 Pentamerus oblongus juvenalis Twenhofel, p. 204 (nomen nudem).
= 1981 Pentamerus oblongus, smooth morphotype; Mork, p. 542, pl. 84, figs. 12-15; pl. 85, figs. 4-6, 10-13.
= 1984 Pentamerus oblongus blandus Jin, p. 67, pl. 4, figs. 1-14; pl. 5, figs. 8-1 0; pl. 6, figs. 4-7; pl. 7, figs. 1-7; pl. 8, figs. 1-5 (nomen nudem).
= 1991 Pentamerus oblongus juvenalis; Jin and Caldwell, p. 316, pl. I, figs. 9-11.]. Its type specimen is GSC 59162, a valve, and it is a 3D body fossil. Its type locality is A0222. Baie aux Goelands, which is in an Aeronian carbonate lime mudstone in the Jupiter Formation of Canada.
Sister species lacking formal opinion data
Entered
by P. Wagner on 2014-11-03; modified by P. Wagner on 2015-07-26
Synonymy list
| Year | Name and author |
|---|---|
| 2000 | Pentamerus palaformis Jin and Copper pp. 37 - 39 figs. Pl. 9, figs. 6-24; Pl. 10, figs. 1-11; Pl. II, figs. 1-5; Pl. 12, figs. 4-10; Text-figs. 20-23 |
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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.
†Pentamerus palaformis Jin and Copper 2000
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Jin and P. Copper 2000 | Medium to very large, subtriangular, subrhomboidal, or subpentagonal, equibiconvex shells of Pentamerus, with relatively obtuse apical angles. Medium-sized shells usually wider than long, showing weak trilobation and anterior protrusion of median lob |
Measurements
No measurements are available
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| Source: g = genus, o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Hendy 2009, Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Age range: Aeronian or 440.50000 to 438.60000 Ma
Collections (21 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Aeronian | Canada (Quebec) | Pentamerus giant sp. (113383) Pentamerus palaformis (113286 158595 158597 type locality: 158599 158604 158607 158783 158787 159922 163518 163521 163522 163523 163524 163574 163575 172937 172940 172941 172949) |