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| Head of humerus rather heavy. Upperface of tuberculum majus (external tuberosity) somewhat oblique. | | | | | | Head of humerus rather heavy. The general form of the upper end is nearly intermediate between Ælurus and Ursus. | | | | | | Head not rather heavy. Tuberculum majus nearly horizontal. |
| Entepicondylar foramen present. | | | | Entepicondylar foramen present. | | | | Entepicondylar foramen generally absent. |
| Deltoid ridge feeble, but forming a straight line. | | | | Deltoid ridge distinct, forming a straight line. | | | | Deltoid ridge broad, ending with a marked tuberosity. |
| Front surface of humerus regularly, but slightly, curved. | | | | | Front surface of humerus regularly, but slightly, curved. | | | | | Front surface of humerus angulated at the prominent tuberosity. |
| Supinatur ridge not very prominent. | | | | Supinator ridge prominent. | | | | Supinator ridge prominent. |
| Entepicondyle flat, somewhat expanded. | | | | | | Entepicondyle flat, very expanded, but seems to be more of the form of that of Ursus than of Ælurus, seen in front. | | | | | | Entepicondyle thick, expanded. |
| Inner crest of trochlea (surface for ulna) very little prominent. | | | | Inner crest of trochlea prominent. | | | | Inner crest of trochlea prominent. |
| Trochlear fossa shallow. | | | Trochlear fossa shallow. | | | Trochlear fossa rather deep. |
| The fore-arm shorter than humerus. | | | | The fore-arm shorter than humerus. | | | | Ulna longer than humerus. |
| Olecranon relatively high. | | | Olecranon relatively high. | | | Olecranon relatively short. |
| Preaxial malleolus of radius forms a short point. | | | | Preaxial malleolus of radius forms a rounded surface. | | | | Preaxial malleolus of radius forms a prominent point. |
| The radial sesamoid small, articulated with radiale- intermedium and metacarpale I (very minute in the other Procyonidæ). | | | | | | | The radial sesamoid extremely long (“præ-hallux“), articulated with radiale-intermedium and metacarpale I. | | | | | | | The radial sesamoid very small, articulated with radiale-intermedium only. |
| Metacarpals rather short. | | | Metacarpals short. | | | Metacarpals rather short. |
| Bony protecting sheath of claws well developed. | | | | Bony sheath of claws well developed. | | | | Bony sheath of claws less developed. |
| | | | | Ilia longer than in Ursus, so that the form of the pelvis is somewhat different. | | | | | ||
| Femur rather long and slender. | | | | Femur short, stout. | | | | Femur longer, more slender. |
| Trochlear surface (for patella) nearly symmetrical. | | | | Trochlear surface nearly symmetrical. | | | | Trochlear surface somewhat obliquely placed. |
| Area between the head and the trochanters (of femur) rather flat. | | | | | Area between head and trochanters rather flat, wide. | | | | | Area between head and trochanters uneven, narrow. |
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