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Fig. 4 in Skeletal Adaptations of Ornitholestes, Struthiomimus, Tyrannosaurus

Fig. 4. First restoration of the skeleton of Struthiomimus altus, Amer. Mus. 5339. Digit I is set too close to digits II, III. One-thirtieth natural size.

Fig . 14 in Skeletal Adaptations of Ornitholestes, Struthiomimus, Tyrannosaurus

Fig . 14 . Restorations of Struthiomimus altus , Amer . Mus . 5339 . A Running pose suggested by Osborn . B Insectivorous theory , anthill-attacking pose suggested by C . William Beebe . One- fortieth natural size .

Pelvic arcade and vertebral structure of the second chief specimen of Tyrannosaurus rex, Amer. Mus. 5027, discovered in 1908. An orthogonal projection executed on a very large scale and reproduced one-twelfth natural size. C 1-C 10 cervical series, D 1-D 13 dorsal or thoracic series, S 1-S 5 sacral series, Cd 1- Cd 53 caudal series. The caudals actually preserved are shaded; those drawn in outline are conjectural and restored. The total number of caudals is conjectural in Skeletal Adaptations of Ornitholestes, Struthiomimus, Tyrannosaurus

Pelvic arcade and vertebral structure of the second chief specimen of Tyrannosaurus rex, Amer. Mus. 5027, discovered in 1908. An orthogonal projection executed on a very large scale and reproduced one-twelfth natural size. C 1-C 10 cervical series, D 1-D 13 dorsal or thoracic series, S 1-S 5 sacral series, Cd 1- Cd 53 caudal series. The caudals actually preserved are shaded; those drawn in outline are conjectural and restored. The total number of caudals is conjectural

Fig. 2 in Skeletal Adaptations of Ornitholestes, Struthiomimus, Tyrannosaurus

Fig. 2. Incomplete manus of Ornitholegtes her- manni; Digit I is missing in this specimen. Amer. Mus. No. 587. Palmar (A) and internal (B) views,

Fig. 20 in Skeletal Adaptations of Ornitholestes, Struthiomimus, Tyrannosaurus

Fig. 20. Comparative views of the sacro-iliac arcade in Tyrannosaurus rex. To the right, superior and inferior views of the type specimen Amer. Mus. 973. To the left, inferior view of the second specimen, Amer. Mus. 5027, including dorsals, D12, 13, also the first caudal, Cl. S2, S2-5 are strongly crushed later ally, deforming their proportions.

Fig. 18 in Skeletal Adaptations of Ornitholestes, Struthiomimus, Tyrannosaurus

Fig. 18. Mounted skeleton of Tyrannosaurus rex Osborn, anterior and lateral views. One-sixtieth natural size. The structure of the manus is conjectural. The other parts are mounted by combination of the skeletons Amer. Mus. Nos. 5027, 973. The sternal ribs are omitted. The manus is represented as tridactyl, but it may be didactyl

Fig. 5 in Skeletal Adaptations of Ornitholestes, Struthiomimus, Tyrannosaurus

Fig. 5. Skulls of Struthiomimus and Struthio compared. A Portions of the skull and jaws of Struthiomimus altus, Amer. Mus. 5339, showing the left dentary, also the outer and inner aspect of the right dentary. B Skull of Struthio. Both figures one-half natural size

Fig. 19 in An Older and Exceptionally Large Adult Specimen of Tyrannosaurus rex

Fig. 19. The right and left surangular of RSM P2523.8 in lateral (A, C) and medial (B, D) view, respectively (as, adductor shelf; l, lesion; mf, maxillary fenestra; psf, posterior surangular fenestra).

Fig. 18 in An Older and Exceptionally Large Adult Specimen of Tyrannosaurus rex

Fig. 18. The right and left dentary of RSM P2523.8 in lateral (A, C) and medial (B, D) view, respectively (1-14, alveoli; mf, mylohyal foramen).

Fig. 17 in An Older and Exceptionally Large Adult Specimen of Tyrannosaurus rex

Fig. 17. The right and left ectopterygoid of RSM P2523.8 in lateral (A, C) and medial (B, D) view, respectively (pn, pneumatic opening).

Fig. 16 in An Older and Exceptionally Large Adult Specimen of Tyrannosaurus rex

Fig. 16. The braincase of RSM P2523.8 in posterior (A) and right lateral (B) view (bt, basal tuber; btg, basiterygoid; cb, cultriform base; bo, basioccipital; bpt, basipterygoid process; bt, basal tubera; eo, exoccipital; fm foramen magnum; fo, fenestra ovalis; fr, frontal; nc, nuchal crest; oc, occipital condyle; on, orbital notch; par, parietal; ptr, posterior tympanic recess; pop, paraoccipital process; pos, postorbital suture; sc, sagittal crest; scr, subcondylar recess; soc, supraoccipital; sph, sphenethmoid; V, X-XII, cranial nerves).

Fig. 15 in An Older and Exceptionally Large Adult Specimen of Tyrannosaurus rex

Fig. 15. The right and left quadratojugal of RSM P2523.8 in lateral (A, C) and medial (B, D) view, respectively (ltf, lateral temporal fenestra; qf, quadrate fenestra).

Fig. 13 in An Older and Exceptionally Large Adult Specimen of Tyrannosaurus rex

Fig. 13. The right squamosal of RSM P2523.8 in lateral (A), posterodorsal (B), and anterior (C) view (ltf, lateral temporal fenestra; pnc, pneumatic chamber; pos, postorbital process; qc, quadrate cotylus; qjp, quadratojugal process).

Fig. 14 in An Older and Exceptionally Large Adult Specimen of Tyrannosaurus rex

Fig. 14. The right quadrate of RSM P2523.8 in lateral (A) and medial (B) view (ac, articular condyles for the lower jaw; pgw, pterygoid wing; qc, quadrate cotylus; qqf, quadrate-quadratojugal fenestra.

Fig. 12 in An Older and Exceptionally Large Adult Specimen of Tyrannosaurus rex

Fig. 12. The right and left postorbital of RSM P2523.8 in lateral (A, C) and medial (B, D) view, respectively (orb, orbit; pb, postorbital boss; sqp, squamosal process).

Fig. 11 in An Older and Exceptionally Large Adult Specimen of Tyrannosaurus rex

Fig. 11. The right and left lacrimal of RSM P2523.8 in lateral (A, C) and medial (B, D) view, respectively (af, antorbital fenestra; orb, orbit).

Fig. 10 in An Older and Exceptionally Large Adult Specimen of Tyrannosaurus rex

Fig. 10. The right and left jugal of RSM P2523.8 in lateral (A, C) and medial (B, D) view, respectively. Rugose ossification (jugal horn) is present only on the left side (orb, orbit; pf, pneumatic fenestra; pos, postorbital suture; jh, jugal horn).

Fig. 8 in An Older and Exceptionally Large Adult Specimen of Tyrannosaurus rex

Fig. 8. The right and left maxilla of RSM P2523.8 in lateral (A, C) and medial (B, D) view, respectively. (af, antorbital fenestra; mf, maxillary fenestra; 1–11, maxillary alveoli).

Fig. 6 in An Older and Exceptionally Large Adult Specimen of Tyrannosaurus rex

Fig. 6. Osteohistology of the right fibula of RSM P2523.8. A, Outer cortical microstructure viewed using incident light microscopy. Note the plethora of secondary osteons indicating dense haversian bone remodeling (HB) and the closely packed remnants of lines of arrested growth (LAGS) nearest the periosteal surface of the element. B, Deep cortical dense haversian remodeling viewed using polarized petrographic microscopy. C, Unorganized, globular and porous, medullar-like bone tissue architecture near the lateral surface of the element. Arrows indicate the borders of secondary osteons (SO), many of which are partially or completely eroded. D, Wedl tunnels created by fungal erosion (FE) associated with the medullar-like bone tissue.

Fig. 1 in An Older and Exceptionally Large Adult Specimen of Tyrannosaurus rex

Fig. 1. The osteology of Tyrannosaurus rex RSM P2523.8. A, The disarticulated skull in left and right lateral views, with the braincase in posterior view. Scale bars = 10 cm. B, Composite illustration showing known skeletal elements in approximate articulation.