Fig. 35. Tamiobatis vetustus NMNH 1717 in Braincase Of The Upper Devonian Shark Cladodoides Wildungensis (Chondrichthyes, Elasmobranchii With Observations On The Braincase In Early Chondrichthyans

Fig. 35. Tamiobatis vetustus NMNH 1717. Ventral view of braincase, depicting four alternative scenarios of basicranial arteries discussed in the text. Note disagreements over the foramen for the orbital artery/anterior palatine ramus, site of efferent pseudobranchial foramen, and the extent to which internal carotid and orbital arteries were enclosed by cartilage. The preferred arrangement is similar to that reconstructed in Cladodoides (fig. 21). No scale.