GEL 107 (13)

GEL 107 (13) - 1 GEL107: PALEOBIOLOGY Lecture 14:...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1 GEL107: PALEOBIOLOGY Lecture 14: Functional Morphology What can we say abut the evolution of large crusing vertebrates? What can we say about the jaw mechanism in fossil vertebrates? What can we say about the flight function of pterosaurs? How can we interpret function in fossils? What can we say about the vision in trilobites? Interpreting the function of fossils 1. Comparison with modern analogs Phylogenetic vs. functional analog Dinosauria Pterosauria Crocodilia Archosauria Evolution of Flight Diapsida Anapsida Reptilia Lepidosauria Amniota Tetrapoda Synapsida Amphibia Pterosauria Archosauria Tetrapoda Synapsida Dinosauria Phylogenetic analog Functional analog Bird Pterosaur pectoralis pectoralis supracoracoideus supracoracoideus deltoideus Flight muscle comparison 2 Interpreting the function of fossils 1. Comparison with modern analogs Phylogenetic vs. functional analog 2. Biomechanical modeling Based on principles of physics Finite Element Analysis (FEA) Rayfield et al (2000) Dinosaur Locomotion Hutchinson & Gatesy (2006) Interpreting the function of fossils 1. Comparison with modern analogs Phylogenetic vs. functional analog 2. Biomechanical modeling Based on principles of physics 3. Circumstantial evidence depositional environment, associated fossils, trace fossils, close study of body fossils Theropod Foot Movement Gatesy et al (1999) Calculating Dinosaur Speed u = 1.4 (l / h) 0.27 u = running speed, l = stride length, h = hip height stride (l) step Alexander (1976) hip height (h) 3 Pterosaur Locomotion Chaterjee&Templin (2004) What can we say abut the evolution of large crusing vertebrates?...
View Full Document

This note was uploaded on 12/13/2009 for the course GEL GEL 107 taught by Professor Jishin during the Spring '09 term at UC Davis.

Page1 / 10

GEL 107 (13) - 1 GEL107: PALEOBIOLOGY Lecture 14:...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online