|Daughter taxa (time control age-window is: 0-800Ma)|
|Ceratolithus nishidae CER|
Species with anterior beak and flattened arms. Typically higher than broad so usually seen in side view. The dextral arm is increases in height toward the apex of the ceratolith and ends in a beak-lke exotsion (often refered to as a "rostrum"). The sinistral arm is also triangular in side view but less elevated and more smoothly curved.
|Ceratolithus nishidae HET|
Ceratolithus heterococcoliths with narrow central opening
Distinguishing features: Ceratoliths horsehoe-shaped with rostrum. Heterococcoliths with narrow central opening
Farinacci & Howe catalog pages: C. nishidae [no catalog entry yet]Search data:
|Metrics||Lith size: 0->0µm;|
Last occurrence (top): within (-Ma, top in "Holocene" stage).
First occurrence (base): within (-Ma, base in "Holocene" stage).
Plot of occurrence data:
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