I took these pictures while in Mazatlan, Mex. The iguanas don't look the same as the spiny tailed iguanas I've seen near Cancun and Chichen-Itza. Anyone know the scientific name?

http://i11.photobucket.com/albums/a158/seveland/mazatlan/iguana2.jpg

http://i11.photobucket.com/albums/a158/seveland/mazatlan/iguana1.jpg

also, what type of gecko were these?

http://i11.photobucket.com/albums/a158/seveland/mazatlan/gecko.jpg