BIOLOGY 4429  EXAM 1, FALL 1998
1. List the seven fundamental Linnean taxonomic categories (from most inclusive to least inclusive) and give an example from mammalian classification for each (5 points) .

2. (15 points) List what you consider to be the five most important mammalian characteristics that allowed mammals to become the dominant vertebrate class on earth and, for each characteristic, briefly defend your choice of each as being the most important.

3-7. Define and state the significance of any 5 of the following. Where appropriate state what taxon (-a) the term is associated with and/or the significance of this term to mammalogy. (4 points each, 20 points each)

binomial nomenclature
determinate growth
enamel
epipubic bones
hypsodont
Gondwana
masseter
notochord
selenodont
syndactyly

8-12. Classify, characterize, and give the zoogeographic distribution and/or geologic age of any FIVE of the following. (4 points each, 20 points total)

Caenolestidae
Dasyuridae
Deuterostome
Microbiotheria
Morganucodontidae
Macropodidae
Myrmecobiidae
Notoryctidae
Ornithorhynchidae
Phascolarctidae
Tarsipedidae

13-16 Answer any FOUR (4) of the following in intricate and excrutiating detail, omitting none of the salient points that are essential for a correct answer and without adding anything that detracts from the clarity and succinctness of your answer. Use illustrations to supplement your answer, if appropriate (10 points each, 40 points total).

A. Contrast the various "reptilian" features of monotremes with their homologs in marsupials. What are the differences and similarities?
B. Explain the importance of using derived characters for classification using Phylogenetic Systematics (cladistics). Give an actual example of this methodology using at least three taxa (preferably more).
C. Discuss how genetic and molecular techniques are used in the classification of mammals.
D. Dicuss the geologic history of the Synapsida. Characterize the pelycosaurs and therapsids in terms of morphology and times of origin and geologic importance. When do mammals first appear?
E. Characterize, compare, contrast, and discuss the significance of the following groups of Mesozoic mammals: triconodonts, symmetrodonts, multituberculates.
F. Describe the origin of the four bones that occur in the middle ear in mammals. Be specific!
G. Name 5 biogeographic regions of the world (excluding Oceanic) and describe in general terms the boundaries and relative diversity and endemism (e.g., moderate, very high, etc.) of each.
H. Discuss fossil and recent biogeography, diversity, and general ecology of the marsupials.