"1. Spiny portion of dorsal fin. 2. Soft portion of dorsal fin. 3. Caudal fin. 4. Anal fin. 5. Pectoral fin. 6. Ventral fin. 7. Mandible or lower jaw. 8. Maxillary. 9. Opercle. 10. Cheek and Preopercle. 11. Lateral fin. 12. Snout. 13. Depth." -Foster, 1921

Small-Mouthed Black Bass

"1. Spiny portion of dorsal fin. 2. Soft portion of dorsal fin. 3. Caudal fin. 4. Anal fin. 5. Pectoral…

"External characters of a Teleostean--a carp (Cyprinus carpio). R., Dorsal unpaired fin; S., homocercal caudal fin; A., anal fin; B., B., pectoral and pelvic paired fins. Note also the lateral line and barbule." -Thomson, 1916

Carp

"External characters of a Teleostean--a carp (Cyprinus carpio). R., Dorsal unpaired fin; S., homocercal…

The name given to certain whales closely allied to the common or whalebone whales, but distinguished by having a dorsal fin, with the throat and under arts wrinkled with deep longitudinal folds, which are supposed to be susceptible of great dilation, but the use of which is as yet unknown.

Rorqual Whale Side

The name given to certain whales closely allied to the common or whalebone whales, but distinguished…