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Tancredia americana
Taxonomy
Hettangia americana was named by Meek and Hayden (1857) [DISTRIBUTION: Campanian; Western Interior.]. It is not a trace fossil.
It was recombined as Tancredia americana by Russell and Landes (1937).
It was recombined as Tancredia americana by Russell and Landes (1937).
Subspecies
Sister species lacking formal opinion data