Squalus teeth are found by fine screening sediment from the lower Yorktown formation. The teeth are very small and inconspicuous so a magnifier is needed (to the unaided eye, the illustrated tooth appears as no more than a grain of sand). Many more specimens will need to be examined before the species can be determined as most species of Squalus have similar teeth.

Teeth from the upper and lower jaws of this shark are very similar. The illustrated tooth is a lateral tooth. Part of the root is missing in this specimen. The downward hanging 'tongue' of enamel is a feature of most Squalus teeth.

Squalus sp lateral Labial view, 3 mm in width