FIGURE 2. A in Lower Jaw of Spathites (Ammonoidea: Acanthoceratoidea) from the Upper Cretaceous (Turonian) of New Mexico

FIGURE 2. A. Overview of New Mexico Museum of Natural History P-79962 showing the specimen of Spathites puercoensis (upper arrow) and the associated jaw (lower arrow). B. Close-up of the umbilical nodes (arrows) surrounding the umbilicus, which is a characteristic of this species. C. Whorl cross section at the base of the body chamber with the last septum of the phragmocone on top. D. Fragment of the apertural margin (arrow) of another specimen of S. puercoensis next to the aptychus. E. Close-up of the inflated apertural margin (arrow) and part of the shell covered with growth lines. Scale bar = 1 cm.