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Figure 39 from: Sereno P (2012) Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs. ZooKeys 226: 1-225. https://doi.org/10.3897/zookeys.226.2840
Figure 39 - Snout end of Heterodontosaurus tucki from from the Lower Jurassic Upper Elliot and Clarens formations of South Africa. Close-up view of the anterior end of a juvenile skull (SAM-PK-K10487). Stereopair (A) and line drawing (B) in left lateral view. Hatching indicates broken bone; dashed lines indicate estimated edges; tone indicates matrix. Scale bars equal 5 mm in A and B. Abbreviations: apd articular surface for the predentary apmf anterior premaxillary foramen d dentary d1 dentary tooth 1 fo, foramen gr groove m maxilla mt maxillary teeth nf narial fossa pd predentary pm premaxilla.
Figure 67 from: Sereno P (2012) Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs. ZooKeys 226: 1-225. https://doi.org/10.3897/zookeys.226.2840
Figure 67 - Limbs of Heterodontosaurus tucki from the Lower Jurassic Upper Elliot and Clarens formations of South Africa. Reconstructions based on an adult skeleton (SAM-PK-K1332). Right forearm, carpus and manus (A), right distal tarsals and pes (B), and right carpus (C) in dorsal view. Abbreviations: I-V digits I-V ce centrale dc1-5 distal carpals 1–5 dt3, 4 distal tarsal 3, 4 fo foramen mc1, 4, 5 metacarpal 1, 4, 5 mt1-4 metatarsals 1–4 ol olecranon ph phalanx pi pisiform ra radius rae radiale ul ulna ule ulnare un ungual.
Figure 37 from: Sereno P (2012) Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs. ZooKeys 226: 1-225. https://doi.org/10.3897/zookeys.226.2840
Figure 37 - Ilium and hindlimb of Abrictosaurus consors from the Lower Jurassic Upper Elliot Formation of South Africa. Stereopairs of the left ilium in lateral view (A) and left pes in dorsal view (B) and line drawing of the sacrum, ilia and left hindlimb mostly in dorsal view (C) (NHMUK RU B54). Hatching indicates broken bone; dashed lines indicate estimated edges; tone indicates matrix. Scale bars equal 2 cm in A and B, 4 cm in C. Abbreviations: I, III, IV digits I, III, IV as astragalus at anterior trochanter ca calcaneum fe femur fi fibula ft fourth trochanter gt greater trochanter il ilium lm lateral malleolus mt1, 4 metatarsals 1, 4 ot ossified tendon ph phalanx poap postacetabular process prap preacetabular process S1, 3 sacral vertebra 1, 3 ti tibia un ungual.
Figure 46 from: Sereno P (2012) Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs. ZooKeys 226: 1-225. https://doi.org/10.3897/zookeys.226.2840
Figure 46 - Tooth structure, occlusion, and replacement in Heterodontosaurus tucki from the Lower Jurassic Elliot and Clarens Formations of South Africa. Successive sagittal computed-tomographic sections in cutaway view of a subadult skull (AMNH 24000). A Posterior portion of skull in anterior view showing the location of sagittal cross-sections B Cross-section in right lateral view through right maxillary and dentary rami C Cross-section in right lateral view through left maxillary and dentary rami. Abbreviations: psaf posterior surangular foramen q quadrate qj quadratojugal rd8 replacement dentary tooth 8 rm9, 10 replacement maxillary teeth 9, 10.
Figure 34 from: Sereno P (2012) Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs. ZooKeys 226: 1-225. https://doi.org/10.3897/zookeys.226.2840
Figure 34 - Skull of Abrictosaurus consors from the Lower Jurassic Upper Elliot Formation of South Africa. A Skull bones of NHMUK RU B54 in left lateral view as initially identified (from Thulborn 1974). B Diagrammatic skull reconstruction in left lateral view based on NHMUK RU B54 (from Norman et al. 2011). Scale bar equals 1 cm in A. Abbreviations: a angular adi arched diastema antfo antorbital fossa d dentary en external nares j jugal l lacrimal or left m maxilla or orbit pap palpebral pd predentary pf prefrontal pm premaxilla q quadrate qj quadratojugal r right sa surangular scr scleral ring.
Figure 35 from: Sereno P (2012) Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs. ZooKeys 226: 1-225. https://doi.org/10.3897/zookeys.226.2840
Figure 35 - Skull of Abrictosaurus consors from the Lower Jurassic Upper Elliot Formation of South Africa. Skull reconstruction in left lateral view based on NHMUK RU B54. Dashed lines indicate estimated edges and sutures. Abbreviations: a angular adf anterior dentary foramen antfo antorbital fossa apd articular surface for the predentary apmf anterior premaxillary foramen be buccal emargination d dentary d1, d14 dentary tooth 1, 14 de dentary expansion en external nares j jugal l lacrimal m maxilla m14 maxillary tooth 14 nf narial fossa pap palpebral pd predentary pm premaxilla pm1 premaxillary tooth 1 po postorbital q quadrate qj quadratojugal sa surangular.
Figure 36 from: Sereno P (2012) Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs. ZooKeys 226: 1-225. https://doi.org/10.3897/zookeys.226.2840
Figure 36 - Forelimb of Abrictosaurus consors from the Lower Jurassic Upper Elliot Formation of South Africa. Stereopair (A) and line drawing (B) of the right forelimb in anterior and ventral views (NHMUK RU B54). Hatching indicates broken bone; dashed lines indicate estimated edges; tone indicates matrix. Scale bars equal 2 cm in A and B. Abbreviations: dc distal carpal dpc deltopectoral crest fr fragment h humerus mc1-5 metacarpals 1-5 ph I-1 phalanx 1 of manual digit I ph II-1 phalanx 1 of manual digit II ph III-1 phalanx 1 of manual digit III ph III-2 phalanx 2 of manual digit III ph V-1 phalanx 1 of manual digit V po postorbital ra radius sk skull ul ulna ule ulnare.
Figure 33 from: Sereno P (2012) Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs. ZooKeys 226: 1-225. https://doi.org/10.3897/zookeys.226.2840
Figure 33 - Maxillary teeth of Abrictosaurus consors from the Lower Jurassic Upper Elliot Formation of South Africa. Stereopair (A) and line drawing (B) of replacing crown medial to posterior right maxillary tooth in medial (lingual) view (NHMUK RU B54). Hatching indicates broken bone; dashed lines indicate estimated edges; tone indicates matrix. Scale bar in A equals 5 mm; scale bar in B equals 3 mm. Abbreviations: m11-14 maxillary tooth 11–14 rc replacement crown.
Figure 41 from: Sereno P (2012) Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs. ZooKeys 226: 1-225. https://doi.org/10.3897/zookeys.226.2840
Figure 41 - Posterior dentition of Heterodontosaurus tucki from from the Lower Jurassic Upper Elliot and Clarens formations of South Africa. Tooth wear and replacement in posterior maxillary and dentary teeth of a juvenile skull (AMNH 24000). Stereopair (A) and line drawing (B) in right lateral view. Hatching indicates broken bone; dashed lines indicate estimated edges; grey tone indicates matrix; pink tone indicates wear facets. Scale bars equal 2 cm in A and 1 cm in B. Abbreviations: asaf anterior surangular foramen c coronoid cp coronoid process d dentary d7, 11 dentary tooth 7, 11 ec ectopterygoid jfl jugal flange m maxilla m8, 11 maxillary tooth 8, 11 mpcf mesial paracingular fossa pri primary ridge sa surangular wf wear facet.
Figure 52 from: Sereno P (2012) Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs. ZooKeys 226: 1-225. https://doi.org/10.3897/zookeys.226.2840
Figure 52 - Tooth structure, occlusion, and replacement in Heterodontosaurus tucki from the Lower Jurassic Elliot and Clarens Formations of South Africa. Successive horizontal computed-tomographic sections in cutaway view of a subadult skull (AMNH 24000). A Posterior portion of skull in right lateral view showing the location of horizontal cross-sections B, C Cross-sections (anterior toward top of page) through the dentary. Abbreviations: d8, 9, 11 dentary tooth 8, 9, 11 rd10, 11 replacement dentary tooth 10, 11 sp splenial.
Figure 51 from: Sereno P (2012) Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs. ZooKeys 226: 1-225. https://doi.org/10.3897/zookeys.226.2840
Figure 51 - Tooth structure, occlusion, and replacement in Heterodontosaurus tucki from the Lower Jurassic Elliot and Clarens Formations of South Africa. Successive horizontal computed-tomographic sections in cutaway view of a subadult skull (AMNH 24000). A Posterior portion of skull in right lateral view showing the location of horizontal cross-sections B, C Cross-sections (anterior toward top of page) through occluding portions of maxillary and dentary tooth rows.Abbreviations: d dentary d8-11 dentary teeth 8-11 m maxilla m9, 10 maxillary tooth 9, 10 ocp occlusal plane rd10 replacement dentary tooth 10.
Figure 58 from: Sereno P (2012) Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs. ZooKeys 226: 1-225. https://doi.org/10.3897/zookeys.226.2840
Figure 58 - Skull of Heterodontosaurus tucki from the Lower Jurassic Upper Elliot and Clarens formations of South Africa. Skull reconstruction in left lateral view from Norman et al. (2011). Abbreviations: a angular antfe antorbital fenestra antfo antorbital fossa ar articular bo basioccipital c coronoid d dentary f frontal j jugal jfl jugal flange jh jugal horn l lacrimal m maxilla n nasal nf narial fossa p parietal pap palpebral pd predentary pm premaxilla po postorbital popr paroccipital process prf prefrontal q quadrate qf quadrate foramen qj quadratojugal sa surangular sq squamosal.
Figure 38 from: Sereno P (2012) Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs. ZooKeys 226: 1-225. https://doi.org/10.3897/zookeys.226.2840
Figure 38 - Snout of the heterodontosaurid Heterodontosaurus tucki from from the Lower Jurassic Upper Elliot and Clarens formations of South Africa. Anterior one-half of a juvenile skull (SAM-PK-K10487). Stereopair (A) and line drawing (B) in anterolateral view. Hatching indicates broken bone; dashed lines indicate estimated edges; tone indicates matrix. Scale bars equal 1 cm in A and B. Abbreviations: apd articular surface for predentary apmf anterior premaxillary foramen d dentary d1 dentary tooth 1 f frontal fo foramen j jugal l lacrimal m maxilla mt maxillary teeth n nasal nd nasal depression nf narial fossa pap palpebral pd predentary pm premaxilla po postorbital prf prefrontal.
Figure 7 from: Sereno P (2012) Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs. ZooKeys 226: 1-225. https://doi.org/10.3897/zookeys.226.2840
Figure 7 - Postcranial remains of Pisanosaurus mertii from the Upper Triassic Ischigualasto Formation of Argentina. Drawings of the holotype (PVL 2577) in the field (from Bonaparte 1976) (A) and impression of central portion of the right pelvic girdle and head of the femur in medial view as previously interpreted (from Bonaparte 1976) (B) and in this study (C). Dashed lines indicate estimated edges; hatching in B indicates broken bone and matrix; hatching in C indicates broken bone; tone in C indicates matrix. Scale bar for B and C equals 1 cm. Abbreviations: III, IV pedal digit III, IV fh femur head fi fibula il ilium is ischium mc metacarpal mt3, 4 metatarsal 3, 4 pu pubis scb scapular blade sr sacral rib ti tibia.
Figure 6 from: Sereno P (2012) Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs. ZooKeys 226: 1-225. https://doi.org/10.3897/zookeys.226.2840
Figure 6 - Cranial remains of Pisanosaurus mertii from the Upper Triassic Ischigualasto Formation of Argentina. Drawings of a partial right maxilla in medial view (A) and right lower jaw (reversed) in lateral view (B) (from Bonaparte 1976). Dashed lines indicate estimated sutures and edges. Scale bar equals 2 cm in B. Abbreviations: a angular apd articular surface for the predentary be buccal emargination cp coronoid process d dentary emfo external mandibular fossa sa surangular.
Figure 54 from: Sereno P (2012) Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs. ZooKeys 226: 1-225. https://doi.org/10.3897/zookeys.226.2840
Figure 54 - Tooth structure in Ouranosaurus nigeriensis from the mid-Cretaceous Elrhaz Formation of Niger. Successive horizontal computed-tomographic sections in cutaway view of a worn maxillary tooth showing internal structure (MNBH GAD28) A Maxillary tooth in distal view showing the location of horizontal cross-sections B Maxillary tooth in apical view (labial toward top of page) C Cross-section (labial toward top of page) through mid crown D Cross-section (labial toward top of page) through base of the crown E Cross-section (labial toward top of page) through proximal portion of the root. Abbreviations: cpc collapsed pulp cavity den dentine e enamel pc pulp cavity pri primary ridge rt root sri secondary ridge wf wear facet.
Figure 60 from: Sereno P (2012) Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs. ZooKeys 226: 1-225. https://doi.org/10.3897/zookeys.226.2840
Figure 60 - Jaws of Heterodontosaurus tucki from the Lower Jurassic Upper Elliot and Clarens formations of South Africa. Reconstruction of upper and lower jaws showing the dentition with heavy wear (based on SAM-PK-K1332). Dashes indicate estimated edges; pink tone indicates wear facets A Upper dentition and anterior palate in ventral view B Lower dentition, dentary symphysis and predentary in dorsal view. Abbreviations: adi arched diastema be buccal emargination d dentary d1, 2, 11 dentary tooth 1, 2, 11 fo foramen m maxilla m1, 11 maxillary tooth 1, 11 pd predentary pm premaxilla pm1, 3 premaxillary tooth 1, 3 spl secondary palate sym symphysis symt symphyseal trough v vomer.
Figure 57 from: Sereno P (2012) Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs. ZooKeys 226: 1-225. https://doi.org/10.3897/zookeys.226.2840
Figure 57 - Skull of Heterodontosaurus tucki from the Lower Jurassic Upper Elliot and Clarens formations of South Africa. Previous skull reconstructions in left lateral view A From Charig and Crompton (1974) B Reversed from Weishampel (1984).
Figure 53 from: Sereno P (2012) Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs. ZooKeys 226: 1-225. https://doi.org/10.3897/zookeys.226.2840
Figure 53 - Tooth structure in Ouranosaurus nigeriensis from the mid-Cretaceous Elrhaz Formation of Niger. Successive coronal computed-tomographic sections in cutaway view of a worn maxillary tooth showing internal structure (MNBH GAD28) A Maxillary tooth in labial view showing the location of coronal cross-sections B Maxillary tooth in distal view showing the division between crown and root and the fossa for an adjacent replacement tooth C Section through mesial portion of crown D Section through mid section of crown. Abbreviations: cpc collapsed pulp cavity cr crown den dentine dent denticle e enamel es erosional surface frt fossa for replacement tooth pc pulp cavity pri primary ridge rt root wf wear facet.
Figure 31 from: Sereno P (2012) Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs. ZooKeys 226: 1-225. https://doi.org/10.3897/zookeys.226.2840
Figure 31 - Skull of Abrictosaurus consors from the Lower Jurassic Upper Elliot Formation of South Africa. Stereopair (A) and line drawing (B) of skull in left lateral view (NHMUK RU B54). Hatching indicates broken bone; dashed lines indicate estimated edges; tone indicates matrix. Scale bars equal 2 cm. Abbreviations: a angular adf anterior dentary foramen aj articular scar for the jugal antfo antorbital fossa apmf anterior premaxillary foramen be buccal emargination d dentary d1, d14 dentary tooth 1, 14 imf internal mandibular fenestra j jugal l lacrimal or left m maxilla Mc Meckel's canal mph manual phalanges pap palpebral pd predentary pm premaxilla pm1, 3 premaxillary tooth 1, 3 po postorbital pra prearticular q quadrate qj quadratojugal r right sa surangular scr scleral ring sp splenial un ungual.
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Allen Brain Atlas
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