| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Fallax
Taxonomy
Fallax was named by Atkins (1960). It is extant.
It was assigned to Aulacothyropsidae by Atkins (1960).
It was assigned to Aulacothyropsidae by Atkins (1960).
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1960 | Fallax Atkins |
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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. Fallax Atkins 1960
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Fallax antarcticus Foster 1974
Fallax dalliniformis Atkins 1960
Fallax neocaledonensis Laurin 1997
†Fallax septatus Philippi 1844
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 5 | 15.7 | 13.7 | 19.1 | 15.4 | 2.09 |
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| Source: f = family, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Age range
Maximum range based only on fossils: base of the Gelasian to the top of the Calabrian or 2.58000 to 0.77400 Ma
Minimum age of oldest fossil (stem group age): 1.8 Ma
Minimum age of oldest fossil (stem group age): 1.8 Ma
Collections (19 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Gelasian | Italy | F. septatus (187486 187487 187489 187492 187493 187494 187496 187497 187510 187521 187522 187523 187526 187527 187528) | |
| Calabrian | Italy | F. septatus (187488 187514 187517 187518) |