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Trigonia cragini
Taxonomy
Trigonia cragini was named by Stoyanow (1949) [TYPE LOCALITY: Cholla Mbr, Lowell Fm, Ninety One Hills, Arizona. TYPE REPOSITORY: Unknown repository (USNM or University of Texas).].
Sister species lacking formal opinion data
T. aliformis, T. bella, T. brevicostata, T. carinata, T. clavigera, T. conradi, T. corderoi, T. costata, T. crebraecostata, T. denticulata, T. elongata, T. guadalupae, T. kenti, T. kidugalloensis, T. leckenbyi, T. libanotica, T. literata, T. loutfyi, T. migeodi, T. mollesensis, T. proelanza, T. prora, T. spinulosa, T. stelzneri, T. tenuis, T. trafalgarensis, T. kuchensis, T. elongata, T. nitida, T. tumida
Synonymy list
Year | Name and author |
---|---|
1949 | Trigonia cragini Stoyanow pp. 80-81 figs. pl. 13, figs. 6-10 |
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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.
†Trigonia cragini Stoyanow 1949
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Diagnosis
No diagnoses are available