| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Megachasmidae
Taxonomy
Megachasmidae is a family.
It was assigned to Orectolobiformes by Purdy et al. (2001); and to Lamniformes by Shimada et al. (2014) and Nelson et al. (2016).
It was assigned to Orectolobiformes by Purdy et al. (2001); and to Lamniformes by Shimada et al. (2014) and Nelson et al. (2016).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 2001 | Megachasmidae Purdy et al. p. 105 |
| 2014 | Megachasmidae Shimada et al. |
| 2016 | Megachasmidae Nelson et al. p. 66 |
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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.
Fm. †Megachasmidae
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, subp = subphylum | |||||
| References: Carroll 1988, Purdy 1988 | |||||
Age range
Maximum range based only on fossils: base of the Chattian to the top of the Pleistocene or 28.10000 to 0.01170 Ma
Minimum age of oldest fossil (stem group age): 23.03 Ma
Minimum age of oldest fossil (stem group age): 23.03 Ma
Collections (12 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Chattian | USA (Oregon) | Megachasma applegatei (45788) | |
| Chattian | USA (California) | Megachasma applegatei (11601) | |
| Aquitanian | USA (Oregon) | Megachasma applegatei (169440) | |
| Aquitanian | USA (California) | Megachasma applegatei (58899 169441) | |
| Aquitanian - Langhian | USA (North Carolina) | Megachasma sp. (48887) | |
| Neogene - Pleistocene | Japan (Okinawa) | Megachasma pelagios (227299) | |
| Burdigalian | Peru (Ica) | Megachasma applegatei (100330) | |
| Early/Lower Hemingfordian | USA (California) | Megachasmidae indet. (17762) | |
| Early/Lower Pliocene | Italy (Tuscany) | Megachasma pelagios (228149) | |
| Zanclean | USA (North Carolina) | Megachasma sp. (52582) | |
| Piacenzian - Zanclean | Belgium | Megachasma sp. (32146) |