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Pachyoncus
Taxonomy
Pachyoncus was named by Pessagno and Blome (1980).
It was assigned to Pantanelliidae by Pessagno et al. (1993); to Pantanelliinae by De Wever et al. (2001); and to Spumellaria by Sepkoski (2002).
It was assigned to Pantanelliidae by Pessagno et al. (1993); to Pantanelliinae by De Wever et al. (2001); and to Spumellaria by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1980 | Pachyoncus Pessagno and Blome |
| 1993 | Pachyconus Pessagno, Jr. et al. p. 129 |
| 2001 | Pachyoncus De Wever et al. p. 111 |
| 2002 | Pacyoncus Sepkoski |
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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. †Pachyoncus Pessagno and Blome 1980
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†Pachyoncus crassus Pessagno and Blome 1980
†Pachyoncus floreus Yeh 2009
†Pachyoncus tumidus Pessagno and Blome 1980
†Pachyoncus varius Pessagno and Blome 1980
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: p = phylum | |||||
| Reference: Kiessling 1999 | |||||
Age range: base of the Bajocian to the top of the Early/Lower Bathonian or 170.30000 to 164.70000 Ma
Collections (14 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Bajocian | USA (California) | Pachyconus kamiasoensis (51639 51640 51641 51642) | |
| Late/Upper Bajocian | USA (Oregon) | Pachyonchus sp., Pachyonchus crassus, Pachyonchus tumidus, Pachyonchus varius (32747) Pachyonchus tumidus, Pachyonchus varius (106403) | |
| Bajocian | USA (California) | P. sp. (185253 185254 185256 185267 185296) | |
| Bajocian | Japan (Gifu) | Pachyonchus sp. A (96066) | |
| Early/Lower Bathonian | USA (California) | Pachyconus kamiasoensis (51644) | |
| Early/Lower Bathonian | USA (Oregon) | Pachyonchus sp. A, Pachyonchus crassus, Pachyonchus floreus (94149) |