Myogale extensor subsp. digiti

WHIDDEN, HOWARD P., 2000, Comparative Myology of Moles and the Phylogeny of the Talpidae (Mammalia, Lipotyphla), American Museum Novitates 3294, pp. 1-53 : 27

M. extensor digiti quinti proprius

ORIGIN: As two heads, one by a narrow aponeurosis from the proximal crest of the olecranon process, the other from the distal surface of the lateral epicondyle of the humerus.

INSERTION: Via a single tendon on the middle phalanx of digit V.

REMARKS: This muscle has the same general form in Parascalops , Scalopus , Scapanus , and Talpa . In Desmana , Galemys , Neurotrichus , Scaptonyx and Urotrichus , the origin is similar, but the tendon of insertion splits, sending branches to insert on the middle phalanges of digits IV and V. In Condylura and Uropsilus , there is only one head of origin, from the lateral epicondyle, and the insertion is on the middle phalanges of digits IV and V. Reed (1951) discussed the confusing configurations in talpids of this muscle and the M. extensor carpi ulnaris.