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Trachystenoceras
Taxonomy
Trachystenoceras was named by Johnston (1941) [Sepkoski's age data: Tr Carn-u Sepkoski's reference number: 302]. It is not extant.
It was assigned to Arpaditidae by Spath (1951); to Arpaditinae by Tozer (1981) and Tozer (1994); and to Ceratitida by Sepkoski (2002).
It was assigned to Arpaditidae by Spath (1951); to Arpaditinae by Tozer (1981) and Tozer (1994); and to Ceratitida by Sepkoski (2002).
Species
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.
Diagnosis
No diagnoses are available