Skates, Rays and Boney Fish
The teeth of Rhinobatos casieri, also known as the Guitarfish are small, averaging a little less than 2mm wide and require the use of a fine meshed screen for collection. The distinctive exaggerated central uvula makes identification possible even if the root is completely missing (very often the case). Crown smooth with single transverse ridge. The root is large with a deep nutrient grove, when viewed on profile angles towards the lingual side of the tooth. There are a pair of foramina on the lingual face of the root and a single large central foramen in the grove on the bottom.
The teeth of
Rhinobatos casieri are small, under 2mm
In-vivo wear on the crown can completely obscure the transverse
Rhinobatos casieri profile view
Using a US dime for scale shows just how small these