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Megatrigonia (Iotrigonia)
Taxonomy
Iotrigonia was named by Van Hoepen (1929) [Sepkoski's age data: J Kimm K Maes Sepkoski's reference number: 914,1115]. It is not extant. Its type is Iotrigonia crassitesta.
It was reranked as Megatrigonia (Iotrigonia) by Cox (1952).
It was assigned to Megatrigonia by Cox (1952); to Trigonioida by Sepkoski (2002); and to Iotrigoniidae by Bouchet et al. (2010).
It was reranked as Megatrigonia (Iotrigonia) by Cox (1952).
It was assigned to Megatrigonia by Cox (1952); to Trigonioida by Sepkoski (2002); and to Iotrigoniidae by Bouchet et al. (2010).
Subtaxa
Iotrigonia consanguinea, Iotrigonia crassitesta (type species), Iotrigonia dubia, Iotrigonia flexicostata, Iotrigonia foveata, Iotrigonia gamporrhyncha, Iotrigonia glyptica, Iotrigonia haughtoni, Iotrigonia leucothea, Iotrigonia limatula, Iotrigonia lorenti, Iotrigonia manflarum, Iotrigonia ovallei, Iotrigonia recurva, Iotrigonia rolli, Iotrigonia vau, Iotrigonia vscripta
Synonymy list
| Year | Name and author |
|---|---|
| 1929 | Iotrigonia Van Hoepen |
| 1952 | Megatrigonia (Iotrigonia) Cox |
| 2002 | Iotrigonia Sepkoski |
| 2010 | Iotrigonia 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.
Subg. †Megatrigonia (Iotrigonia) Van Hoepen 1929
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†Iotrigonia consanguinea Philippi 1899
†Iotrigonia crassitesta van Hoepen 1929
†Iotrigonia dubia Kitchin 1903
†Iotrigonia flexicostata Burwash 1913
†Iotrigonia foveata Philippi 1899
†Iotrigonia gamporrhyncha Philippi 1899
†Iotrigonia glyptica Woods 1917
†Iotrigonia haughtoni Rennie 1936
†Iotrigonia leucothea Philippi 1899
†Iotrigonia limatula Whitehouse 1946
†Iotrigonia lorenti Dana 1849
†Iotrigonia manflarum Philippi 1899
†Iotrigonia ovallei Philippi 1899
†Iotrigonia recurva Kitchin 1903
†Iotrigonia rolli Piatnizky 1900
†Iotrigonia vau Sharpe 1900
†Iotrigonia vscripta Kitchin 1903
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| Reference: Aberhan et al. 2004 | |||||
Age range: base of the Early/Lower Tithonian to the top of the Maastrichtian or 150.80000 to 66.00000 Ma
Collections (24 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kimmeridgian - Early/Lower Tithonian | Antarctica | Iotrigonia vau (36800) | |
| Tithonian | India (Gujarat) | Trigonia recurva (106923) | |
| Tithonian | Antarctica | Iotrigonia vau (36796 36799) | |
| Early/Lower Tithonian | Tanzania | Trigonia dubia (35568 79267) | |
| Berriasian | Antarctica | Iotrigonia vau (36793) | |
| Berriasian | Chile | Iotrigonia sp. (57145) | |
| Berriasian | Ukraine (Crimea) | Iotrigonia scapha (124752) | |
| Late/Upper Valanginian | South Africa | Iotrigonia vau (64726) | |
| Late/Upper Valanginian | India (Gujarat) | Iotrigonia recurva, Iotrigonia vscripta (66781) | |
| Valanginian | India (Gujarat) | Iotrigonia sp. (64625) | |
| Valanginian | Australia (Queensland) | Iotrigonia limatula (83943) | |
| Barremian | Turkmenistan | Iotrigonia sp., Iotrigonia abichi (170614) | |
| Aptian | New Zealand | Iotrigonia sp. (83424 83426 83427 83428 83430) | |
| Aptian - Albian | New Zealand | Iotrigonia sp. (37057) | |
| Late/Upper Aptian | New Zealand | Iotrigonia sp. (65634) | |
| Early/Lower Aptian | Turkmenistan | Iotrigonia abichi (47028) | |
| Maastrichtian | Argentina | Iotrigonia sp. (1357) | |
| Maastrichtian | Argentina (Chubut) | Iotrigonia sp. (231707) |