|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Cephalopoda - Ammonitida - Acanthoceratidae
It was reranked as Calycoceras (Newboldiceras) by Matsumoto and Skwarko (1991), Matsumoto and Skwarko (1993), Kennedy (1994), Kennedy et al. (1996), Kennedy and Jolkicev (2004) and Ahmad et al. (2013).
It was assigned to Ammonoidea by Sepkoski (2002); and to Calycoceras by Matsumoto and Skwarko (1991), Matsumoto and Skwarko (1993), Kennedy (1994), Kennedy et al. (1996), Kennedy and Jolkicev (2004) and Ahmad et al. (2013).
|Year||Name and author|
|1991||Calycoceras (Newboldiceras) Matsumoto and Skwarko p. 252|
|1993||Calycoceras (Newboldiceras) Matsumoto and Skwarko p. 423|
|1994||Calycoceras (Newboldiceras) Kennedy p. 227|
|1996||Calycoceras (Newboldiceras) Kennedy et al. p. 314|
|2002||Newboldiceras Sepkoski, Jr.|
|2004||Calycoceras (Newboldiceras) Kennedy and Jolkicev p. 375|
|2013||Calycoceras (Newboldiceras) Ahmad et al. p. 27|
Is something missing? Join the Paleobiology Database and enter the data
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.