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The extraordinary osteology and functional morphology of the limbs in Palorchestidae, a family of strange extinct marsupial giants

Fig 20

Labelled illustrations of the Palorchestes parvus left humerus AM F58870.

(A) anterior; (B) lateral; (C) posterior; (D) lateral views. Hatching indicates surface damage to cortical bone, dashed lines indicate inferred bone contours. Abbreviations: bg, bicipital groove; brf, fossa for m. brachialis origin; ca, capitulum; del, deltoid insertion; eta, origin for m. epitrochleoanconeus; gt, greater tubercle; hh, humeral head; inf, fossa for insertion of m. infraspinatus; ldtm, insertion for mm. latissimus dorsi and teres major; le, lateral epicondyle; lsc, lateral supracondylar crest; lt, lesser tubercle; me, medial epicondyle; of, olecranon fossa; pec, pectoral crest; subf, fossa for insertion of m. subscapularis; supf, fossa for insertion of m. supraspinatus; sf, supracondylar foramen; tr, trochlea; tri, origin for humeral heads of m. triceps brachii. Scale bar 50 mm.

Fig 20

doi: https://doi.org/10.1371/journal.pone.0221824.g020