Oct 12 2009
Photos from Week 7 Lab
If you need a second look at the stations from Week 7 Lab, here they are.
Also, here are some helpful skull diagrams from Animal Diversity Web:
For the optional quiz, do we have to be able to tell the difference between a squirrel’s skull and a prairie dog’s skull? If so, how do we tell?
A prairie dog’s upper teeth make a bit of a V shape, with the wide part of the V nearest the nose, as in this photo:
http://www.royalalbertamuseum.ca/natural/paleo/research/_images/skulls.jpg
A squirrel’s teeth tend to be more parallel, or curved out slightly in the middle (more rounded than V shaped, if that makes sense), such as:
http://animaldiversity.ummz.umich.edu/site/resources/skulls/sciurus/s._niger/105217.ventral.jpg/medium.jpg
However, most of the questions on the optional quiz will have a skin with them, and those that are skull only won’t be tricky.