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Minohellenus
Taxonomy
Charybdis (Minohellenus) was named by Karasawa (1990). Its type is Charybdis (Minohellenus) quinquedentata.
It was reranked as Minohellenus by Kato and Karasawa (1994), Schweitzer and Feldmann (2000), Schweitzer and Feldmann (2002), Karasawa and Schweitzer (2006), Karasawa et al. (2008), Schweitzer et al. (2010), Luque et al. (2017), Schweitzer et al. (2021).
It was assigned to Charybdis by Karasawa (1990), Karasawa (1993); to Portunidae by Karasawa and Schweitzer (2006); to Macropipidae by Karasawa et al. (2008), Schweitzer et al. (2010), Luque et al. (2017); and to Polybiinae by Kato and Karasawa (1994), Schweitzer and Feldmann (2000), Schweitzer and Feldmann (2002), Schweitzer et al. (2021).
It was reranked as Minohellenus by Kato and Karasawa (1994), Schweitzer and Feldmann (2000), Schweitzer and Feldmann (2002), Karasawa and Schweitzer (2006), Karasawa et al. (2008), Schweitzer et al. (2010), Luque et al. (2017), Schweitzer et al. (2021).
It was assigned to Charybdis by Karasawa (1990), Karasawa (1993); to Portunidae by Karasawa and Schweitzer (2006); to Macropipidae by Karasawa et al. (2008), Schweitzer et al. (2010), Luque et al. (2017); and to Polybiinae by Kato and Karasawa (1994), Schweitzer and Feldmann (2000), Schweitzer and Feldmann (2002), Schweitzer et al. (2021).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1990 | Charybdis (Minohellenus) Karasawa p. 21 |
| 1992 | Itoigawaia Karasawa et al. |
| 1993 | Imaizumila Karasawa p. 52 |
| 1993 | Itoigawaia Karasawa p. 53 |
| 1993 | Charybdis (Minohellenus) Karasawa p. 55 |
| 1994 | Minohellenus Kato and Karasawa p. 53 |
| 2000 | Imaizumila Karasawa and Fudouji p. 246 |
| 2000 | Imaizumila Schweitzer and Feldmann p. 639 |
| 2000 | Minohellenus Schweitzer and Feldmann p. 643 |
| 2002 | Minohellenus Schweitzer and Feldmann p. 961 |
| 2006 | Minohellenus Karasawa and Schweitzer p. 61 |
| 2008 | Minohellenus Karasawa et al. p. 100 |
| 2010 | Minohellenus Schweitzer et al. p. 107 |
| 2017 | Minohellenus Luque et al. p. 17 |
| 2021 | Minohellenus Schweitzer et al. p. 11 |
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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. †Minohellenus Karasawa 1990
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†Minohellenus araucanus Philippi 1887
†Minohellenus chichibuensis Kato 1996
†Minohellenus inexpressus Schweitzer and Feldmann 2002
†Minohellenus macrocheilus Kato and Karasawa 1994
†Minohellenus minoensis Karasawa 1990
†Minohellenus quinquedentatus Karasawa 1990
†Minohellenus sexdentatus Karasawa 1993
Minohellenus umemotoi Karasawa 1993
Invalid names: Imaizumila Karasawa 1993 [synonym], Itoigawaia Karasawa et al. 1992 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| H. Kato and H. Karasawa 1994 | Moderate sized portunid; carapace transversely hexagonal. Front narrow, bearing two teeth; anterolateral margin bearing five teeth; chelipeds large, heterochelate, having smooth lateral surfaces. |
Measurements
No measurements are available
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| Source: f = family, superf = superfamily, o = order, c = class | |||||
| References: Turnsek 1997, Fearon and Clapham 2023, Aberhan 1992 | |||||
Age range
Maximum range based only on fossils: base of the Uintan to the top of the Late/Upper Miocene or 45.90000 to 5.33300 Ma
Minimum age of oldest fossil (stem group age): 39.7 Ma
Minimum age of oldest fossil (stem group age): 39.7 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Uintan | USA (California) | M. inexpressus (200665 200666) | |
| Rupelian | Japan (Saga) | Imaizumila sexdentata (127692) | |
| Rupelian | Japan (Nagasaki) | Imaizumila sexdentata (202439) | |
| Rupelian | Japan | M. macrocheilus (205046 205055) | |
| Chattian | Japan (Fukuoka) | M. macrocheilus (202368 202371) | |
| Burdigalian | Japan (Gifu) | Charybdis quinquedentata, Portunites minoensis (46950) | |
| Middle Miocene | Japan (Shimane) | Itoigawaia minoensis (127708) | |
| Late/Upper Miocene | Chile | Cancer araucanus (80404) |