. Report of the Geological exploration of the fortieth parallel . 1 a. A side view of same. Fig. 2. Trachyceras Judicaricum, var. subasperum 118 2. A side view of an imperfect specimen. 2 a. A peripheral or abdominal view of same. 2 6. A view of the lobes and sinuses of the septa. Fig. 3. Trachyceras Whitneyi 116 3. A peripheral or abdominal view of an imperfect specimen. 3 a. Side view of same. Fig. 4. EcdiscocerasGabbi 128 4. Side view of an imperfect specimen. 4 a. A peripheral or abdominal view of same. Fig. 5. ACROCHORDISCERAS Hyatti 124 5. Side view of a broken and somewhat distorted spe
. Report of the Geological exploration of the fortieth parallel . 1 a. A side view of same. Fig. 2. Trachyceras Judicaricum, var. subasperum 118 2. A side view of an imperfect specimen. 2 a. A peripheral or abdominal view of same. 2 6. A view of the lobes and sinuses of the septa. Fig. 3. Trachyceras Whitneyi 116 3. A peripheral or abdominal view of an imperfect specimen. 3 a. Side view of same. Fig. 4. EcdiscocerasGabbi 128 4. Side view of an imperfect specimen. 4 a. A peripheral or abdominal view of same. Fig. 5. ACROCHORDISCERAS Hyatti 124 5. Side view of a broken and somewhat distorted specimen. 5 0. A side view of a larger imperfect specimen. Fig. 6. Gymnotoceras Blakei - 113 6. Side view of a nearly complete adult specimen apparently of this species. 6 a. A peripheral or abdominal view of same, showing the remarkable flattening of the periphery. Fig. 7. Arcestes? perplanus 120 7. Side view of a cast, showing no surface-markings. 7 a. A proiile view, showing the strongly-compressed form of the shell. U S GeoIErpI 40 Parallel Trias^:ic Plate XI.
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Keywords: ., booksubjectbotany, booksubjectgeology, booksubjectpaleontology
