...discoidal or compressed on the sides, and narrowly rounded on the dorsum ; umbilicus shallow, about one-half as wide as the breadth of the outer whorl from the ventral to the dorsal side, showing apparently a little less than half of each inner whorl ; volutions...

...Genu- AMMONITES, Bruguiere. AMMONITES MDIXAHANDS. Shell compressed-subglobose ; rounded on the dorsum. Umbilicus small, deep and acutely conical,— between...one-third and one-half as wide as the breadth of the oater whorl from the dorsal to the ventral side, showing about one-third of each inner volution. Whorls...

...Thirteenth Ann. Rept. Regents Univ. NY, p. 102. SHELL compressed, discoidal; umbilicus large or nearly twice the breadth of the outer whorl from the dorsal to the ventral side, shallow and showing about four-fifths of each inner whorl. Volutions slender and increasing very gradually...

...discoidal or nearly flat on the sides, and narrowly rounded on the dorsum. Umbilicus rather shallow, about one-half as wide as the breadth of the outer whorl from the ventral to the dorsal side, showing apparently about one-third of each inner whorl. , Volutions increasing...

...discoidal or nearly flat on the sides, and narrowly rounded on the dorsum. Umbilicus rather shallow, about one-half as wide as the breadth of the outer whorl from the ventral to the dorsal side, showing apparently about one-third of each inner whorl. Volutions increasing...

...Meek's revised description is as follows : " Shell compressed- subglobose; rounded on the periphery; umbilicus small, deep, and acutely conical, between...convexity, sloping on each side from near the umbilicus (with a slightly convex outline) toward the periphery, and rounding abruptly into the umbilicus on...

...compressed-snbglobose; rounded on the periphery; umbilicus small, deep, and acutely conical, betweeii one-third and one-half as wide as the breadth of the...convexity, sloping on each side from near the umbilicus (with a slightly convex outline) toward the periphery, and rounding abruptly into the umbilicus on...

...compressed-.snbglobose; rounded on the periphery; umbilicus small, deep, and acutely conical, between one third and one-half as wide as the breadth of the outer whorl...from the dorsal to the ventral side, showing about one third of each inner volution. Whorls increasing rather rapidly in size, particularly in convexity,...