PMC

A, left femur of CGM 60584 interpreted as male, in posterior view. B, weathered left femur of CGM 60583 interpreted as female, in posterior view. C, right tibia of CGM 60583 interpreted as female, in lateral view. D, right tibia of CGM 60584 interpreted as male, in lateral view. Elements interpreted as male average 11% larger in linear dimensions than elements interpreted as female. Abbreviations: fc, fovea capitis femoris; gt, greater trochanter; lc, lateral condyle; lt, lesser tuberosity; mc, medial condyle; tf, trochanteric fossa; tt, third trochanter.

The manual placement of regions of interest with help of (A–B) followup morphologic images to define cartilage extension was performed simultaneously on (C–D) followup and (E–F) baseline dGEMRIC images. (A, C, E) The margins for the acetabular cartilage were the rim on the lateral side and the acetabular fossa on the medial side. Cartilage areas were subdivided into (p) peripheral and (c) central regions. (B, D, F) The margins for the femoral cartilage were the head-neck junction on the lateral side and the fovea capitis femoris on the medial side. Cartilage areas were subdivided into (p) peripheral and (c) central regions.

The proximal extremity belonging to the largest sized individual, MDS-VG,109, is figured in A₁ posterior, A₂ lateral, and A₃ proximal views. The diaphysis fragment (B) belongs to the medium-sized individual and is in medial view. The distal fragments MDS-VG,135 (C), MDS-VG,132 (D), and MDS-VG,134 (E) belong respectively to the largest and two medium-sized individual. They are in posterior (C), anterior (D₁/E₁) and distal (D₂/E₂) views. Abbreviations: 4th.tr, fourth trochanter; cfl, caudifemoralis muscle scar; eg, extensor groove; fg flexor groove; g.tr, greater trochanter; ifg, ilio-fibularis muscle groove; l.tr, lesser trochanter; lcf, sulcus for the ligamentum capitis femoris; tr.f, trochanteris fossa. Scale: 1 cm.

(A–D) Right femur of MPCA 245, in (A) anterior, (B) lateral, (C) posterior (D) and medial view. (E) Detail of the proximal portion of the left femur of MPCA 245, in posterior view. (F–I) proximal portion of the right femur of MPCA 238, in (F) anterior, (G) lateral, (H) posterior and (I) medial view. Scales: 2 cm for A–D and F–I, 1 cm for E. bet, bioerosion trace fossils; ectt, ectocondylar tuberosity; fh, femur head; ftro, fourth trochanter; gtr, greater trochanter; ifint?, possible insertion point of the M. iliofemoralis internus; lcf, lateral condyle of the femur; lcfp, passage for the ligamentum capitis femoris; llf, lateral line of the femur; ltr, lesser trochanter; mcf, medial condyle of the femur; obcr, obturator crest; poplf, popliteal fossa; ptr, posterior trochanter; trsh, trochanteric shelf.