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Megachasmidae
Taxonomy
Megachasmidae is a family.
It was assigned to Orectolobiformes by Purdy et al. (2001); and to Lamniformes by Shimada et al. (2014), Nelson et al. (2016).
It was assigned to Orectolobiformes by Purdy et al. (2001); and to Lamniformes by Shimada et al. (2014), Nelson et al. (2016).
Subtaxa
Entered
by M. Uhen on 2006-07-28
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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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 (15 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Priabonian | Denmark | Megachasma alisonae (277503) | |
| Chattian | USA (Oregon) | Megachasma applegatei (45788) | |
| Chattian | USA (California) | Megachasma applegatei (11601) | |
| Aquitanian | USA (California) | Megachasma applegatei (58899 169441) | |
| Aquitanian | USA (Oregon) | Megachasma applegatei (169440) | |
| Aquitanian - Langhian | USA (North Carolina) | Megachasma sp. (48887) | |
| Miocene - Gelasian | Japan (Okinawa) | Megachasma pelagios (227299) | |
| Burdigalian | Belgium | Megachasma pelagios (277338) | |
| Burdigalian | Peru (Ica) | Megachasma applegatei (100330) | |
| Early/Lower Hemingfordian | USA (California) | Megachasmidae indet. (17762) | |
| Messinian | Chile | Megachasma sp. (114474) | |
| Zanclean | Italy (Tuscany) | Megachasma pelagios (228149) | |
| Zanclean | USA (North Carolina) | Megachasma sp. (52582) | |
| Piacenzian - Zanclean | Belgium | Megachasma sp. (32146) |