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Megatrigonia
Taxonomy
Megatrigonia was named by van Hoepen (1929) [Sepkoski's age data: J Tith-u K Maes Sepkoski's reference number: 914]. It is not extant.
It was assigned to Trigoniidae by Cox (1952); to Trigonioida by Sepkoski (2002); and to Megatrigoniinae by Bouchet et al. (2010).
It was assigned to Trigoniidae by Cox (1952); to Trigonioida by Sepkoski (2002); and to Megatrigoniinae by Bouchet et al. (2010).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1929 | Megatrigonia van Hoepen |
| 1952 | Megatrigonia Cox |
| 2002 | Megatrigonia Sepkoski |
| 2010 | Megatrigonia Bouchet et al. |
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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. †Megatrigonia van Hoepen 1929
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Subg. †Megatrigonia (Apiotrigonia) Cox 1952
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Subg. †Apiotrigonia (Apiotrigonia) Cox 1952
†Apiotrigonia buchi Geinitz 1900
†Apiotrigonia calderoni Cragin 1905
†Apiotrigonia disparilis d'Orbigny 1844
†Apiotrigonia maudensis Whiteaves 1876
†Apiotrigonia newcombei Packard 1921
†Apiotrigonia pennata Sowerby 1819
†Apiotrigonia progonos Paulcke 1903
†Apiotrigonia robinaldina d'Orbigny 1844
†Apiotrigonia turcmenensis Archangelski 1900
†Megatrigonia (Apiotrigonia) condoni Packard 1921
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Invalid names: Trigonia packardi Anderson 1958 [synonym]
†Megatrigonia (Apiotrigonia) sulcataria Lamarck 1819
†Megatrigonia arsinoe Philippi 1900
†Megatrigonia carrincurensis Leanza 1941
†Megatrigonia conocardiiformis Krauss 1900
†Megatrigonia discors Philippi 1900
†Megatrigonia eximia Philippi 1899
†Megatrigonia obesa van Hoepen 1929
†Megatrigonia picunensis Weaver 1900
†Megatrigonia pusilla Philippi 1899
†Megatrigonia staffi Lange 1900
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family | |||||
| References: Ros-Franch et al. 2014, Aberhan et al. 2004 | |||||
Age range: base of the Late/Upper Barremian to the top of the Maastrichtian or 125.77000 to 66.00000 Ma
Collections (47 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Barremian | South Africa | M. sp. (65846 65849 65850 65852) | |
| Aptian | Trinidad and Tobago | M. longa (1868) | |
| Late/Upper Aptian | Chile (Ovalle) | Apiotrigonia progonos (222423) | |
| Early/Lower Albian | USA (California) | Trigonia packardi (176021) | |
| Early/Lower Albian | USA (Oregon) | M. condoni (88612 88615) | |
| Albian | USA (Oregon) | M. condoni (88611 88613 88614 88616 88617) | |
| Late/Upper Albian - Early/Lower Cenomanian | USA (California) | Apiotrigonia sp. (224968) | |
| Cenomanian | Japan (Ishikari) | Apiotrigonia minor (39578 39652) | |
| Cenomanian | USA (California) | Apiotrigonia condoni (220368) | |
| Cenomanian - Turonian | Russian Federation (Sakhalin) | Apiotrigonia minor (39569) | |
| Middle Turonian | Kyrgyzstan (Batken) | M. turkestanensis (3808) | |
| Turonian | Japan (Ishikari) | Apiotrigonia minor (39577 39669) | |
| Turonian - Santonian | Japan (Ehime) | Apiotrigonia minor (40591) | |
| Coniacian | Japan (Kumamoto) | Apiotrigonia minor (38621) | |
| Early/Lower Coniacian | Japan (Fukushima) | Apiotrigonia minor (39626) | |
| Late/Upper Coniacian - Campanian | Japan (Tokushima) | Apiotrigonia minor (40654) | |
| Early/Lower Santonian | Japan | Apiotrigonia minor (219958) | |
| Late/Upper Santonian | Japan | Apiotrigonia minor (115287 115291 115294 115297) | |
| Santonian | Japan (Kumamoto) | Apiotrigonia granosa, Apiotrigonia himenourensis, Apiotrigonia minor (39567) | |
| Santonian - Campanian | Japan (Kagoshima) | Apiotrigonia himenourensis (40507) | |
| Campanian | Japan (Hyogo) | Apiotrigonia postonodosa (39575) | |
| Campanian | Japan (Kumamoto) | Apiotrigonia minor, Apiotrigonia postonodosa (39565) | |
| Early/Lower Campanian | Japan | Apiotrigonia minor (82332 82336 82340 82341 82342 82378 82381 82382 82383 82384) | |
| Maastrichtian | Russian Federation (Sakhalin) | Apiotrigonia sp. (1333) | |
| Maastrichtian | Japan | Apiotrigonia postonodosa (1315) |