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Image: Dilophosaurus pathologies

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Description: Pathological features in the forelimbs and left scapula of UCMP 37302 (Dilophosaurus wetherilli). (a) Right radius and ulna (above) and enlargements of distal end of radius (below) in (from top to bottom) lateral, abductor, and medial views; broken outline indicates three bony tumors. (b) Left and right humerus (left humerus on left, right humerus on right) in lateral view, each photographed with lateral epicondyle directly facing the viewer, with heavy broken line indicating the midline of the posterior (retractor) surface of each to show the abnormal degree of torsion in the right humerus. (c) Medial surface of left scapula, with broken outline indicating fracture. (d) Left (on left) and right (on right) manual phalanx III-1 in dorsal (top) and palmar (bottom) views, with broken lines indicating plane of articulation with adjacent bones, to show the alteration of this plane in the right-hand phalanx. (e) Distal ends of left (on left) and right (on right) metacarpal III in lateral/abductor view (top) and palmar view (bottom), with broken outline indicating edge of articular surface, to show abnormal truncation of articular surface in right metacarpal III. (f) Left manual phalanx I-1 (on left), with its right-hand counterpart for comparison (on right), in palmar (top) and lateral/abductor (bottom) views, with broken outlines indicating healed fibriscesses. (g) Medial surface of left ulna, with broken outline indicating healed fibriscess and arrow indicating abnormal bony growth. (h) Left radius and ulna in medial view, with arrow indicating healed fracture. (i) Left (top) and right (bottom) metacarpal III and phalanx III-1, with phalanx III-1 in full extension and full flexion, to show the reduced range of motion of this digit in the right hand. Scale bars = 50 mm.
Title: Dilophosaurus pathologies
Credit: http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0149140
Author: Leandra Walters, Phil Senter, Sara L. Juengst
Usage Terms: Creative Commons Attribution 2.5
License: CC BY 2.5
License Link: http://creativecommons.org/licenses/by/2.5
Attribution Required?: Yes

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