BIOLOGY 4429 EXAM 1, FALL 1996

1. List four characteristics of the Phylum Chordata (1 pt each)

2. List 11 characteristics (in order of decreasing importance) that are used to distinguish living mammals. (2 pts each)

3. List the four bones in the mammalian middle ear region and their reptilian homologs. (1 pt each)

3. State two reasons why teeth are so important to mammalian paleontologists. (2 pts each)

4. What is the only unambiguously nonprimitive character that is used to define the Metatheria (2 pts)

5-10. Define and state the significance of any 6 of the following. Where appropriate state what taxon (-a) the term is associated with. (4 points each)

Autapomorphy
Baculum
Carnassial
Choriovitelline placenta
Dental formula
Determinate long-bone growth
Hypocone
Paraphyletic
Premolars
Phylogenetic Systematics
Sebaceous glands
Tribosphenic

11-18. Classify, characterize, and give the zoogeographic distribution and/or geologic age of any 8 of the following. (5 points each)

Dasyuridae
Diprotodontia
Erinaceidae
Lipotyphla
Morganucodontidae
Multituberulata
Pelycosaurs
Phascolarctidae
Soricidae
Syndactyla
Tachyglossidae
Therapsida
Thylacinidae