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Portunites alaskensis
Taxonomy
Portunites alaskensis was named by Rathbun (1926) [Originally named Portunites alaskensis by Rathbun 1926, but has since been reclassified as Megokkos alaskensis.]. It is the type species of Megokkos.
It was recombined as Megokkos alaskensis by Schweitzer and Feldmann (2000), Schweitzer et al. (2003), Nyborg et al. (2003) and Schweitzer et al. (2010).
It was recombined as Megokkos alaskensis by Schweitzer and Feldmann (2000), Schweitzer et al. (2003), Nyborg et al. (2003) and Schweitzer et al. (2010).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1926 | Portunites alaskensis Rathbun p. 72 figs. Plate 18, Figs. 3-4 |
| 1990 | Portunites alaskensis Tucker and Feldmann p. 414 |
| 2000 | Megokkos alaskensis Schweitzer and Feldmann p. 640 |
| 2003 | Megokkos alaskensis Nyborg et al. p. 324 |
| 2003 | Megokkos alaskensis Schweitzer et al. p. 46 |
| 2010 | Megokkos alaskensis Schweitzer et al. p. 107 |
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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.
†Portunites alaskensis Rathbun 1926
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Fearon and Clapham 2023, Aberhan 1992, Turnsek 1997 | |||||
Age range: base of the Priabonian to the top of the Rupelian or 38.00000 to 28.10000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Bartonian - Priabonian | Canada (British Colombia) | Portunites alaskensis (209752) | |
| Priabonian - Rupelian | USA (Washington) | Portunites alaskensis (39961) | |
| Late/Upper Oligocene - Early/Lower Miocene | USA (Alaska) | Portunites alaskensis (7954) |