Primitive ornithischians & the stegosaurs

Primitive - Primitive ornithischians the stegosaurs part 2 chapter 6 Mural displayed at Dinosaur State Park Rocky Hill CT A primitive ornithischian

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Primitive ornithischians & the stegosaurs Mural displayed at Dinosaur State Park, Rocky Hill, CT A primitive ornithischian dinosaur from CT and MA , based on local footprint evidence and skeletons from Africa
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What, again, are the ornithischians? Dinosaurs whose pubis has two projections, one pointing forward (the prepubic process), and the other paralleling the ischium ornithischian pelvis http://users.tamuk.edu/kfjab02/dinos/dinoart/copelvis.jpg
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What other characters unite the ornithischia? Predentary bone in the lower jaw Toothless tip of snout Gryposaurus, ACM display Predentary bone } Toothless tip of snout
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Palpebral bone over eye socket Ossified tendons, etc. What other characters unite the ornithischia? Ossified tendons along back Maiasauria , fig. 10.2c Heterodontosaurus , fig. 10.6a Palpebral bone
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What types of dinosaurs are ornithischians? www.futura-sciences.com/uploads/tx_oxcsfutura/img/ankylosaurus.jpg www.mcps.k12.md.us/schools/knollses/dinosaurs/DINOGR/stegosauruslg.jpg Stegosaurs Ankylosaurs Ceratopsians www.emerson.k12.nj.us/staff/rmkelly/custom/DinosaurWQ/Images/Triceratops/triceratopsBOV.jpg Pachycephalosaurs www.dinoposters.greatamericanpublish.com/images/posters/Pachycephalosaurus_FULL.jpg Ornithopods
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Ornithischian relationships Basal split between Lesothosaurus and the genosauria Genosaurs had muscular cheeks based on the deep-set tooth rows, Lesothosaurus does not All ornithischians besides Lesothosaurus are genosaurs
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A comparative view of skulls Pachycephalosaurus , a genosaur www.ldeo.columbia.edu/edu/dees/courses/v1001/images/pachycephalosaurusskull.gif Lesothosaurus fig. II.4a
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Cladistic analysis of ornithischians
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Genosaurs subsequently evolved into two major groups: 1. Thyreophora 2. Cerapoda Thyreophora are the armored dinosaurs, and consist of two main groups (below) as well as more basal forms. 1. Ankylosaurs
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This note was uploaded on 04/22/2008 for the course GEOL 111 taught by Professor Getty during the Fall '07 term at UConn.

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Primitive - Primitive ornithischians the stegosaurs part 2 chapter 6 Mural displayed at Dinosaur State Park Rocky Hill CT A primitive ornithischian

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