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Macrocheira
Taxonomy
Macrocheira was named by De Haan (1839) [Sepkoski's age data: T Ol-u R]. It is extant. Its type is Maja kaempferi. It is the type genus of Macrocheiridae.
It was assigned to Inachinae by Karasawa (1993), Schweitzer and Feldmann (1999), Schweitzer (2001); to Decapoda by Sepkoski (2002); to Inachidae by Schweitzer et al. (2010), Nyborg et al. (2016), Schweitzer et al. (2020); and to Macrocheiridae by Ferratges et al. (2023), Schweitzer (2025).
It was assigned to Inachinae by Karasawa (1993), Schweitzer and Feldmann (1999), Schweitzer (2001); to Decapoda by Sepkoski (2002); to Inachidae by Schweitzer et al. (2010), Nyborg et al. (2016), Schweitzer et al. (2020); and to Macrocheiridae by Ferratges et al. (2023), Schweitzer (2025).
Synonymy list
| Year | Name and author |
|---|---|
| 1839 | Macrocheira De Haan |
| 1993 | Macrocheira Karasawa p. 74 |
| 1999 | Macrocheira Schweitzer and Feldmann p. 245 |
| 2001 | Macrocheira Schweitzer p. 529 |
| 2002 | Macrocheira Sepkoski |
| 2010 | Macrocheira Schweitzer et al. p. 94 |
| 2016 | Macrocheira Nyborg et al. p. 126 |
| 2020 | Macrocheira Schweitzer et al. p. 10 |
| 2023 | Macrocheira Ferratges et al. p. 14 |
| 2025 | Macrocheira Schweitzer p. 134 |
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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.
G. Macrocheira De Haan 1839
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†Macrocheira columbiaensis Nyborg et al. 2016
†Macrocheira enoptra Schweitzer 2025
†Macrocheira ginzanensis Imaizumi 1965
Macrocheira jayi Nyborg et al. 2016
Macrocheira kaempferi Temminck 1836
†Macrocheira longirostra Schweitzer and Feldmann 1999
†Macrocheira sullivani Nyborg et al. 2016
†Macrocheira teglandi Rathbun 1926
†Macrocheira yabei Imaizumi 1957
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Aberhan 1992, Turnsek 1997 | |||||
Age range
Maximum range based only on fossils: base of the Ypresian to the top of the Late/Upper Pliocene or 56.00000 to 2.58000 Ma
Minimum age of oldest fossil (stem group age): 48.07 Ma
Minimum age of oldest fossil (stem group age): 48.07 Ma
Collections (16 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Ypresian | USA (Oregon) | M. enoptra (193969) | |
| Priabonian | USA (Oregon) | M. sullivani (75900) | |
| Priabonian | Spain (Aragón) | M. sp. (209381) | |
| Priabonian | USA (Washington) | M. longirostra (221305) | |
| Priabonian - Rupelian | USA (Washington) | M. sullivani (200793) | |
| Rupelian | USA (Washington) | M. teglandi (202283) | |
| Oligocene | USA (Washington) | M. teglandi (140568) | |
| Rupelian - Chattian | Canada (British Colombia) | M. jayi (58090) | |
| Chattian | USA (Washington) | M. teglandi (202281 221302 221303 221304) | |
| Burdigalian | USA (Washington) | M. columbiaensis (200869) | |
| Burdigalian | Japan | Paratymolus yabei (169964) | |
| Serravallian | Japan | M. ginzanensis (169967) | |
| Late/Upper Pliocene | Japan (Miyazaki) | M. sp. (127701) |