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Megistostoma
Taxonomy
Megistostoma was named by Gabb (1864) [Sepkoski's age data: T Eo-l T Plio Sepkoski's reference number: 1066]. Its type is Megistostoma striata.
It was reranked as Philine (Megistostoma) by Cossmann (1895).
It was assigned to Philine by Cossmann (1895); to Philinidae by Turner (1938), Squires (1984) and Squires and Demetrion (1992); and to Cephalaspida by Sepkoski (2002).
It was reranked as Philine (Megistostoma) by Cossmann (1895).
It was assigned to Philine by Cossmann (1895); to Philinidae by Turner (1938), Squires (1984) and Squires and Demetrion (1992); and to Cephalaspida by Sepkoski (2002).
Synonymy list
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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. †Megistostoma Gabb 1864
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†Megistostoma gabbianum Stoliczka 1868
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Invalid names: Megistostoma caminoensis Hanna 1927 [synonym], Megistostoma striata Gabb 1864 [replaced]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: superf = superfamily, c = class | |||||
| References: Hendy et al. 2009, Kiessling 2004 | |||||
Age range: base of the Paleocene to the top of the Burdigalian or 66.00000 to 15.97000 Ma
Collections (15 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Paleocene | USA (California) | M. sp. (190775) M. striata (190773) | |
| Ypresian | USA (California) | M. gabbianum (122294 122656) | |
| Ypresian - Lutetian | USA (California) | M. gabbianum (200849) | |
| Lutetian | USA (California) | M. gabbiana (94825) M. gabbianum (8012 8015 200744) | |
| Lutetian | USA (Oregon) | M. caminoensis (200897 201033) | |
| Lutetian | Mexico (Baja California) | M. gabbianum (5505) | |
| Lutetian - Bartonian | USA (Washington) | M. gabbiana (43347) | |
| Bartonian | USA (Mississippi) | Philine dockeryi (164232) | |
| Burdigalian | Germany | Philine complanata (111599) |