. Bulletins of American paleontology. 420 Bulletin 216. Text-fig. 29. External septal suture of Eudmetoceras {Euaptetoceras) amplfcirns (Buckman), at 77 mm. diameter, from loc. A22 in the Eudmetoceras zonule of Wide Bay (PI. 68, fig. 1) ; X jocian species, such as Eudmetoceras amplectens, can wilh certainty be determineci. In the thick Lower Bajocian section near Lorrach, iipj-)er Rhine Valley, a typical Eiidmeloceras amplectens was recently t'oiind by K. Hoffmann (priv. comm.) in the G. concavum Zone. The identity could be confirmed by a plaster cast of this specimen in the Natnr- hisior
. Bulletins of American paleontology. 420 Bulletin 216. Text-fig. 29. External septal suture of Eudmetoceras {Euaptetoceras) amplfcirns (Buckman), at 77 mm. diameter, from loc. A22 in the Eudmetoceras zonule of Wide Bay (PI. 68, fig. 1) ; X jocian species, such as Eudmetoceras amplectens, can wilh certainty be determineci. In the thick Lower Bajocian section near Lorrach, iipj-)er Rhine Valley, a typical Eiidmeloceras amplectens was recently t'oiind by K. Hoffmann (priv. comm.) in the G. concavum Zone. The identity could be confirmed by a plaster cast of this specimen in the Natnr- hisiorisches Museum Basel. Jn the Basal Jura a "Enduietoceras Zone Subzone" was distin- guished by Lieb (1954, 1957), between "Obere Concavazone" and "Disciteszone", at Sespen, near Oberfrick. In the Ghei section E. {Euaptetoceras) amplectens is relatively frequent in Lieb's (1951, 1954, 1957, p. 679) "Eudmetoceras-Discites-Zone", just above the beds with Graphoceras concavum and well below the S. sowerbyi Zone but occured supposedly together with Hyperlioceras discites. The author confirmed the specific identity at this occurrence in 1962 under the kind guidance of Dr. F. Lieb. Maubeuge (1955, p. 34, pi. 6, figs. 4, 5) described and figured two specimens near to this species but apparently transitional to the typical E. amaltheiforme from the G. concavum Zone of Le Coulou, Underviel, and Lang- matt, also in the nothern Swiss Jura. They were supposedly asso- ciated with E. amaltlieijorme (pi. 6, figs. 2, b, 3a, b). According to Elmi (1962, Jura coll.) and Manbeuge (j)riv. comm.) our species occurs in eastern and southeastern France also in the G. concavum Zone and, significantly, below H. discites Avhich, in turn, is said to appear there well below Sonninia spp. Comparison.—E. amplectens is usually distinguished from Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability
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