a in Blackboard - myPNW B Take Test: Midterm 2- X D Use this phylogeny of Dino:

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a in Blackboard - myPNW B Take Test: Midterm 2- X D Use this phylogeny of Dino: + V ? X e F A & https://mycourses.purdue.edu/webapps/assessment/take/launch.jsp?course_assessment_id=_287303_1&course;_id=_350592_1&content.; I * = 1 2 ... > 0 My Grades Use this phylogeny of Dinosauria to answer the next few questions Pisanosaurus Alalosaurus Nassospondylus Luringosaurus Scelidosaurus Huayannosaurus STEOOSAURINAE Hylaeosaurus NODOSAURINAE Gargoyleosaurus Mivni + ANKYLOSAURINAE Omelsaus DICRAEOSAURIDAE DIPLODOCIDAE Haplocamentosus Garaauru - BRACHIOSAURIDAE Euhelopus TITANOSAURIA DINOSAURIA IT HETERODONTOSAURIDAE K HYPSILOPHODONTIDAE Mutfabwysuwus Tenofoamuru - DRYOSAURIDAL CAMPTOSAURIDAE - Probatrosaurus IGUANODONTIDAE Ouranosaurus - Protothuadros HADROSAURINAE - LAMBEOSAURINAE Stenopelix ???????? Homolocephale - Stogo #ras Prenocephale Stygimoloch Pachycephalosaurus Eoraptor HERRERASAURIDAE Elaphrosurg Ceratosaurus ABELISAURIDAE - ????????? Liensternus COELOPHYSIDAE - TORVOSALIRIDAE S SPINOSAURIDAE - ALLOSAUROIDEA - Ortholestes - coAPSOGNATHIDAE ALVAREZSAURIDAE S ORNITHOMIMIDAE S THEAIZINOSAURIDAE - TYRANNOSAUROIDEA OVIRAPTOROSAURIA 7 DROMAEOSAURIDAE TROODONTIDAE Archaeopteryx - CONFUCIUSORNITHIDAE Y ENANTIORNITHES SEU ORNITHES SAURISCHIA T Psittacosaurus - Chaoyangsaurus Leptoceratops - PROTOCERATOPSIDAE Montanoceratops Turanoceratops CENTROSAURINAE CERATOPSINAE - ORNITHISCHIA On this tree the numbers at each node are the node number - for example you would say that Enantiornithes split from Euornithes at node 59 Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Save and Submit 1 4:38 PM 0 Type here to search O a A e A S A * 3/26/2018

Explanation / Answer

To study the phylogeny of Brachiosauridae the best outgroup choice would be Titanosauria. Because they are evolved from a common clade and show similarities in their features. Based on their similar humerus,femur and length ratios.

If Sauropoda is last common ancestor of Titanosauria and Riojasaurus the node that is base of this clade would be the node that is connecting both the species. Which is a common node for 30 and 34. It is the 29th node.

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