This document contains questions about identifying bones in a skeleton diagram and interpreting information from cladograms showing evolutionary relationships between various dinosaur groups. It asks the reader to name specific bones in a skeleton, identify closest relatives of different dinosaur species based on their position on cladograms, and read data from a matrix assessing presence or absence of evolutionary features in ornithomimosaurs.
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In the skeleton above identify by name or number the follow.pdf
1. In the skeleton above, identify by name or number the following bones: 5) A Cervical (neck)
Vertebra 6) A Dorsal (back) Vertebra 7) A Sacral (hip) vertebra 8) A Caudal (tail) Vertebra 9) A Rib
10) Scapula 11) Ilium 12) Ischium 13) Pubis 14) Humerus 15) Femur 16) Tibia 17) Fibula 18) Ulna
19) A Metacarpal 20) A Metatarsal 21) Chevron 22) Acetabulum 23) What is the ONL Y proper
abbreviation of Tyrannosaurus rex?N Part II. Systematics Below is a cladogram showing the
interrelationship of various dinosaurs and related forms. The positions of pairs of derived
characters are indicated by the heavy bold horizontal lines. 26) What is the closest relative to
Hylaeosaurus on this cladogram? 27) What is the closest relative to Iguanodon on this cladogram?
28) What is the closest relative to the clade comprised of Iguanodon + Hylaeosaurus on this
cladogram? Below is a cladogram and data matrix of the ostrich dinosaurs (Ornithomimosauria). In
the data matrix, a "0" indicates that the derived feature (mentioned on the left) is absent; " 1 "
indicates that the derived feature is present; and "?" means that the feature cannot be evaluated
(in these cases, that part of the body isn't known for the genus). For example, Ornithomimus is
toothless, has a long metacarpal I, and a pinched metatarsal III. Harpymimus shows the primitive
(ancestral) condition: it has teeth, a short metacarpal I, and doesn't have a pinched III.