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Calycoceras (Conlinoceras)
Taxonomy
Calycoceras (Conlinoceras) was named by Cobban and Scott (1972). Its type is Conlinoceras gilberti.
It was reranked as Conlinoceras by Wright et al. (1996) and Sepkoski (2002).
It was assigned to Calycoceras by Cobban and Scott (1972); to Acanthoceratinae by Wright et al. (1996); and to Ammonoidea by Sepkoski (2002).
It was reranked as Conlinoceras by Wright et al. (1996) and Sepkoski (2002).
It was assigned to Calycoceras by Cobban and Scott (1972); to Acanthoceratinae by Wright et al. (1996); and to Ammonoidea by Sepkoski (2002).
Species lacking formal opinion data
Synonymy list
Year | Name and author |
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1972 | Calycoceras (Conlinoceras) Cobban and Scott p. 61 |
1996 | Conlinoceras Wright et al. p. 158 |
2002 | Conlinoceras Sepkoski |
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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. †Calycoceras (Conlinoceras) Cobban and Scott 1972
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Diagnosis
Reference | Diagnosis | |
---|---|---|
W. A. Cobban and G. R. Scott 1972 | Conlinoceras differs from the other groups of Calycoceras chiefly in its sparser ribbing and in reduction in strength of the umbilical tubercles to bullae or even to slightly accentuated ribs. The umbilical wall is low compared to the high steep wall of typical Calycoceras. | |
C. W. Wright et al. 1996 | Early whorls with weak ornament similar to that of Acanthoceras; mature whorls circular to compressed in section, with distant, high ribs crossing venter and almost no umbilical tubercles. |