Lab5_Excavation Stage I

DINOSAUR EXCAVATION STAGE I Part I: Excavation Stage I - Pelvic Girdle and Hindlimb A new fossil site has just been excavated and you are on the team that must identify what has been found. In the next 4 laboratory assignments you will examine different portions of the skeleton and use anatomical clues to narrow down the possible identity the fossil. After completing all 4 assignments, you will be placed in groups to compare your evidence and create a consensus report on your findings. 1) Find Your Bearings. Below is “site map” image of the excavation site(s). These images, and others you will need to complete this assignment, are available at https://sites.google.com/tamu.edu/geol-207-dinosaur-world-ex1/home . An arrow is labeled in the top right corner of your image indicating the direction of North. On your site map image, each bone has been numerically labeled.

2) Identify and Catalog the Bones: use the Table 1 below to catalog the bones recovered during the excavation. For each numbered bone, you should identify the type of bone and the region of the body the bone is from (for this lab, “hindlimb” and “pelvis” are appropriate terms for skeletal region). Under notes, provide any features present that are important sharded derived characters that could help you in your identification. You should also provide an approximate measurement for each bone marked with a * using the scale bars on the zoom-in photos available at https://sites.google.com/tamu.edu/geol-207-dinosaur-world-ex1/home . Table I. Bone catalog for Excavation Stage I. (5 pts) Bone Number Bone Identification Skeletal Region Measurements Other Notes Length (cm) Width (cm) 1* Femur Hind limb 80 15 2* Tibia Hind limb 70 10 Larger than fibula 3 Fibula Hind limb -- -- 4* Tarsometatars us Hind limb 54 15 5 Ungual Hind limb -- -- Looks like a claw 6 metatarsal Hind limb -- -- Bigger than phalanges 7 Phalange Hind limb -- -- Seem to be part of foot 8 Phalange Hind limb -- -- Seem to be part of foot 9 Phalange Hind limb -- -- Seem to be part of foot 10 Ungual Hind limb -- -- Looks like a claw 11 Metatarsal Hind limb -- -- 12 Phalange Hind limb -- -- Seem to be part of foot 13 Phalange Hind limb -- -- Seem to be part of foot 15 metatarsal Hind limb -- -- 16 Phalange Hind limb -- -- 17 ungual Hind limb -- -- 18 Illium Pelvis -- -- Had a large ball joint socket 19 ischium pelvis -- -- 20 Pubis pelvis -- -- 21 Hind limb -- -- 22 Hind limb -- --