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Trigonirhynchella trigona
Taxonomy
Trigonirhynchia trigona was named by Dagys (1961). Its type specimen is IGiG 179/20 and is a 3D body fossil. It is the type species of Trigonirhynchella.
It was recombined as Trigonirhynchella trigona by Dagys (1974) and Xu (1978).
It was recombined as Trigonirhynchella trigona by Dagys (1974) and Xu (1978).
Sister species lacking formal opinion data
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.
†Trigonirhynchella trigona Dagys 1961
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Diagnosis
No diagnoses are available
Measurements
part | N | mean | |||||
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shell height | 1 | 19.5 |
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Source: o = order, c = class, p = phylum, uc = unranked clade | |||||
References: Aberhan et al. 2004, Nesnidal et al. 2013 |
Age range: Late/Upper Triassic or 237.00000 to 201.40000 Ma
Collections: one only
Time interval | Ma | Country or state | Original ID and collection number |
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Late/Upper Triassic | China (Sichuan) | Trigonirhynchella trigona (123658) |