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35 results for “Probactrosaurus”
Figure 13. Probactrosaurus gobiensis Rozhdestvensky, 1966. PIN 2232 in On Asian ornithopods (Dinosauria: Ornithischia). 4. Probactrosaurus Rozhdestvensky, 1966
Figure 13. Probactrosaurus gobiensis Rozhdestvensky, 1966. PIN 2232/1-4. Surangular (partial right) in lateral view. Abbreviations: an.s = sutural surface for the angular; d.s = sutural surface for a posterior process of the dentary; for = surangular foramen; lip = lateral lip to the quadrate cotylus.
Figure 17 in On Asian ornithopods (Dinosauria: Ornithischia). 4. Probactrosaurus Rozhdestvensky, 1966
Figure 17. Posterior cervical-dorsal vertebrae from the mounted skeleton of Probactrosaurus gobiensis. PIN 2232/ 10. These specimens are poorly preserved and jumbled, all seem to be missing neural spines and much of the neural platform. Anterior dorsals-?posterior cervicals have convexo-concave centra. Abbreviations: caud? = caudal vertebrae; mid.d = mid-dorsal vertebrae; p.c-a.d = posterior cervical/anterior dorsal vertebrae.
Figure 19. Probactrosaurus gobiensis Rozhdestvensky, 1966. PIN 2232 in On Asian ornithopods (Dinosauria: Ornithischia). 4. Probactrosaurus Rozhdestvensky, 1966
Figure 19. Probactrosaurus gobiensis Rozhdestvensky, 1966. PIN 2232/10. Caudal vertebrae. Examples of proximal, middle and distal caudals. Abbreviations: a.z = anterior zygapophyses; cr = caudal rib; ph = posterior haemapophysis (chevron facet); pz = posterior zygapophysis.
Figure 32. Probactrosaurus gobiensis Rozhdestvensky, 1966. A, PIN 2232 in On Asian ornithopods (Dinosauria: Ornithischia). 4. Probactrosaurus Rozhdestvensky, 1966
Figure 32. Probactrosaurus gobiensis Rozhdestvensky, 1966. A, PIN 2232/32-1. Tibia in anterior (dorsal) view. B, PIN 2232/10 (mounted skeleton) showing the articulated tibia, fibula and astragalus in anterior view. Abbreviations: as.s = sutural surface for the astragalus; ast = astragalus; cc = cnemial crest; fib.s = sutural surface for attachment of the fibula.
Figure 20. Probactrosaurus gobiensis Rozhdestvensky, 1966. A in On Asian ornithopods (Dinosauria: Ornithischia). 4. Probactrosaurus Rozhdestvensky, 1966
Figure 20. Probactrosaurus gobiensis Rozhdestvensky, 1966. A, scapula in lateral view (PIN 2232/1). B, scapula 'alashanicus' in medial view (PIN 2232/41-3). C, coracoid in lateral view (PIN 2232/2-5). Abbreviations: acr = 'acromion' process; for = coracoid foramen; gl = humeral glenoid; ri = coracoid ridge; sc = muscle scars.
Figure 4. Probactrosaurus gobiensis Rozhdestvensky, 1966 in On Asian ornithopods (Dinosauria: Ornithischia). 4. Probactrosaurus Rozhdestvensky, 1966
Figure 4. Probactrosaurus gobiensis Rozhdestvensky, 1966. Premaxilla (PIN 2232/1-2) in lateral (A) and medial (B) view. Missing portions of the oral margin and the distal ends of the median and lateral posterior processes. Abbreviations: en = external naris; ms = median suture; mx.gr = groove for the dorsomedial process of the maxilla; ns = nasal spine; oc = dorsal portion of the anterior oral cavity.
Figure 33. Probactrosaurus gobiensis Rozhdestvensky, 1966. PIN 2232 in On Asian ornithopods (Dinosauria: Ornithischia). 4. Probactrosaurus Rozhdestvensky, 1966
Figure 33. Probactrosaurus gobiensis Rozhdestvensky, 1966. PIN 2232/10. Pes, right, in articulation, based on the skeletal mount.
Figure 14 in On Asian ornithopods (Dinosauria: Ornithischia). 4. Probactrosaurus Rozhdestvensky, 1966
Figure 14. Probactrosaurus and lambeosaurine isolated dentary teeth compared. (A) lingual and (B) distal. PIN 2232/23-2 an isolated, complete replacement crown from the left dentition. (C) lingual), and (D) mesial. Drawing of a 'typical' lambeosaurine hadrosaurid tooth crown, from the right dentition. Abbreviations: 1–4 = equivalent facets for the articulation of adjacent teeth; p = primary ridge; sh = shoulder region on the mesial edge of the crown. Note the degree of curvature of the root in distal aspect; in this respect probactrosaur teeth more closely resemble those seen in more basal iguanodontians and hadrosaurine hadrosaurids (cf. Brachylophosaurus sp. MOR 1071).
Figure 24. Probactrosaurus gobiensis Rozhdestvensky, 1966. Metacarpals. A, PIN 2232 in On Asian ornithopods (Dinosauria: Ornithischia). 4. Probactrosaurus Rozhdestvensky, 1966
Figure 24. Probactrosaurus gobiensis Rozhdestvensky, 1966. Metacarpals. A, PIN 2232/3-1. Metacarpal IV of the right manus in ventral view, and B, MC IV in dorsal view; C, PIN 2232/18-5. Metacarpal III of the?left manus in dorsal view. D, PIN 12068. Metacarpal II of the right manus in dorsal view. Abbreviations: l.s = ligament scars.
Figure 16. Dentary crowns. A in On Asian ornithopods (Dinosauria: Ornithischia). 4. Probactrosaurus Rozhdestvensky, 1966
Figure 16. Dentary crowns. A, Altirhinus kurzanovi. Isolated replacement dentary crown; crown hollow, root uncalcified. B, Probactrosaurus gobiensis isolated crown (PIN 2232/23-2) in lingual aspect. C, the same crown as in B, but in mesial aspect and under greater magnification, showing details of the structure of the marginal denticles.
Figure 27. Probactrosaurus. Ilium. A & C, PIN 2232 in On Asian ornithopods (Dinosauria: Ornithischia). 4. Probactrosaurus Rozhdestvensky, 1966
Figure 27. Probactrosaurus. Ilium. A & C, PIN 2232/19-1. Left ilium lacking only a small part of the acetabular margin and posterior blade. B, PIN 12017. Left ilium, labelled 'P. alashanicus', rather less complete, missing the distal end of the anterior process and the pubic peduncle. Abbreviations: ac = acetabulum; ap = anterior process; is.p = ischial peduncle; pu.p = pubic peduncle; srs = sutural contact areas for the sacral ribs/sacricostal yoke.
Figure 15. Probactrosaurus gobiensis Rozhdestvensky, 1966 in On Asian ornithopods (Dinosauria: Ornithischia). 4. Probactrosaurus Rozhdestvensky, 1966
Figure 15. Probactrosaurus gobiensis Rozhdestvensky, 1966. Dentary teeth in lingual aspect, as stereoscopic pairs. A, an isolated, unworn dentary crown (PIN 2232/23-2). B, part of a dental magazine of 'P. alashanicus' (PIN 2232/42- 1). C, an isolated and partially worn dentary crown (PIN 2232/24-1). Natural size.
Figure 12. Probactrosaurus gobiensis Rozhdestvensky, 1966. PIN 2232 in On Asian ornithopods (Dinosauria: Ornithischia). 4. Probactrosaurus Rozhdestvensky, 1966
Figure 12. Probactrosaurus gobiensis Rozhdestvensky, 1966. PIN 2232/42-1. Dentary (attributed to 'P. alashanicus') right, nearly complete, showing part of the dental magazine in-situ and showing the presence of two replacement crowns in a single alveolus and an oblique inclination of the occlusal surface. Abbreviations: al.p = alveolar parapet; b.sh = buccal shelf lateral to the dentition; cp = coronoid process; gr = simple groove marking the position of the foramina leading to the dental lamina; pd.s = sutural surface for the predentary; sa.s = surangular; sym = dentary symphysis.
Figure 6. Probactrosaurus gobiensis Rozhdestvensky, 1966. Jugal PIN 2232 in On Asian ornithopods (Dinosauria: Ornithischia). 4. Probactrosaurus Rozhdestvensky, 1966
Figure 6. Probactrosaurus gobiensis Rozhdestvensky, 1966. Jugal PIN 2232/1-1a (left) in lateral (A) and medial (B) view. Abbreviations: ec.s = suture for the ectopterygoid; itf = lower margin of the infratemporal fenestra; mx.s = sutural surface for the jugal process of the maxilla (Figure 5); q-j.s = suture for the quadratojugal.
Figure 9. Probactrosaurus gobiensis Rozhdestvensky, 1966. PIN 2232 in On Asian ornithopods (Dinosauria: Ornithischia). 4. Probactrosaurus Rozhdestvensky, 1966
Figure 9. Probactrosaurus gobiensis Rozhdestvensky, 1966. PIN 2232/2-1. Braincase in left lateral view. Abbreviations: aud = auditory recess (including fenestra vestibuli, exit for cranial nerve [cn] IX and?jugular); bo = basioccipital; bs = basisphenoid; cn = cranial nerves; cn III = probably includes cn VI and cn VII; ex: exoccipital; ls = laterosphenoid; orb = sphenethmoid/orbitosphenoid plate; op = opisthotic; p = parietal; pr = pro-otic; ps = parasphenoid; sq-n = notch for attachment of medial portion of squamosal.
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