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Teeth ascribed to this genus have been reported from Upper Cretaceous through Middle Eocene
sediments of Europe, Africa and North America. These teeth are small and their overall design
is reminiscent of those of the modern dasyatids. The root is often proportionately larger than
extant species', otherwise it is very similar -- bilobate, lacking lateral foramina and/or notches
and lingually directed. The labial crown face is ornamented & lingually inclined and the lingual
face is smooth and more upright. A strong transverse crest separates the lingual and labial crown
faces. The margins of the crown extend beyond the root and slightly overhang it. Unlike most
extant dasyatids, there is a broad and deep depression of the labial crown face.
Cappetta (1987) indicates that the genus displays sexual dimorphism similar to most recent
stingrays - the female teeth tending to be lower-crowned and larger and those of the male,
more cuspidate in anterior files. He noted C. woutersi CAPPETTA 1982
from the Middle Eocene of
Africa and Europe. Case (1994) noted this species in the Early Eocene of Mississippi.
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Fig. 1 - Coupatezia cf woutersi
hgt = 2.1, wid = 2.2, dep = 2.3 mm
Nanjemoy Formation, Virginia |
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Fig. 2 - Coupatezia cf woutersi
hgt = 2.4, wid = 2.4, dep = 2.3 mm
Nanjemoy Formation, Virginia |
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Fig. 3 - cf Coupatezia [damaged tooth]
hgt = 2.1, wid = 2.9, dep = 2.0 mm
Piscataway Member, Aquia Formation, Maryland |
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