| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Megachasma
Taxonomy
Megachasma was named by Taylor et al. (1983). It is extant.
It was assigned to Megachasmidae by Compagno (2005), Shimada et al. (2014), Landini et al. (2019).
It was assigned to Megachasmidae by Compagno (2005), Shimada et al. (2014), Landini et al. (2019).
Species
Entered
by M. Uhen on 2006-07-28; modified by M. Clapham on 2026-01-24
Synonymy list
| Year | Name and author |
|---|---|
| 1983 | Megachasma Taylor et al. |
| 2005 | Megachasma Compagno |
| 2014 | Megachasma Shimada et al. |
| 2019 | Megachasma Landini et al. p. 358 |
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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. Megachasma Taylor et al. 1983
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†Megachasma alisonae Shimada and Ward 2016
†Megachasma applegatei Shimada et al. 2014
Megachasma pelagios Taylor et al. 1983 [megamouth shark]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, subp = subphylum | |||||
| References: Purdy 1988, Carroll 1988 | |||||
Age range
Maximum range based only on fossils: base of the Priabonian to the top of the Gelasian or 37.71000 to 1.80000 Ma
Minimum age of oldest fossil (stem group age): 33.9 Ma
Minimum age of oldest fossil (stem group age): 33.9 Ma
Collections (14 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Priabonian | Denmark | M. alisonae (277503) | |
| Chattian | USA (Oregon) | M. applegatei (45788) | |
| Chattian | USA (California) | M. applegatei (11601) | |
| Aquitanian | USA (California) | M. applegatei (58899 169441) | |
| Aquitanian | USA (Oregon) | M. applegatei (169440) | |
| Aquitanian - Langhian | USA (North Carolina) | M. sp. (48887) | |
| Miocene - Gelasian | Japan (Okinawa) | M. pelagios (227299) | |
| Burdigalian | Peru (Ica) | M. applegatei (100330) | |
| Burdigalian | Belgium | M. pelagios (277338) | |
| Messinian | Chile | M. sp. (114474) | |
| Zanclean | USA (North Carolina) | M. sp. (52582) | |
| Zanclean | Italy (Tuscany) | M. pelagios (228149) | |
| Piacenzian - Zanclean | Belgium | M. sp. (32146) |