Fossil sea turtle from the lower eocene of harwich, england; skull from palatal. B. O. = basioccpital, b. S. = basisphenoid, e. O. = exoccipital, la = aperture of labyrinth, ma = mandibular symphysis, m. S = masseteric ridge of mandible, ops = opisthotic, pal = palatine, p. T, pterygoid, pt. N. = posterior nares, q. J. = quadratojugal, qu = quadrate, sup = supraoccipital, t. F. = palatal aperture of temporal fossa. Date: 1889.
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