2The student will:Identify the various types of skull and jaw bones in their evidence sampleUtilize different types of dichotomous keysIdentify different types of animal hair as to species typeSolve the forensic crimeInterpret a topographic map
3Skull AnatomyForamen magnumForamen magnum – large opening in the base of skull, spinal cord passes through
4Skull AnatomyZygomatic arch – formed from 2 slender bony processes (one from the temporal bone and one from the maxilla)
5Sagittal crest - thin ridge of bone atop and down the braincase
6Teeth IdentificationIncisors – smaller more vertical teeth on center front of jaw (purple)Canines – longer more pointed teeth(green)
7Teeth ID Premolars - flatter teeth behind the canines (pink) Molars – teeth further back in jaw (aqua)Diastema – gap in teeth at canines (between green and purple)
8Kinds of molars Seleodont: found in herbivores; have ridges Bunodont: found in omnivores;have 4 cuspsCarnassial: found in carnivores;fit together, shearing edges
9Raccoon - omnivore Facial region is short/wide Facial length < cranial lengthMale skull: mmFemale skull: mmWeak sagittal crest
39Geographic Information Systems (GIS) are causing a mapping revolution. GIS makes it possible to combine layers of digital data from different sources and to manipulate and analyze how the different layers relate to each other.
40Crime solvingPolice investigators link police record systems with geographic information to analyze crime patterns and help solve cases.
41Contour LinesPortray the shape and elevation of the landTopographic maps show the three-dimensional ups and downs of the terrain on a two-dimensional surface.
42Each contour is equal to a line of equal elevation- contours never cross Topographic contours are shown in brown by lines of different width. They show the general shape of the terrain.
43Contours that are very close together represent steep slopes Contours that are very close together represent steep slopes. Widely spaced contours or an absence of contours means that the ground slope is relatively level.
44Scale and Colors of Topographic Maps 1:24,000 means 1 in =2000 ftRed areas represent urban areas.Roads and highways are represented in black and red.
45Blue represents waterGreen represents orchards and forested areas.Purple markings are those that have been "photorevised," or added to the map since the original map was published.
46Thin brown lines represent contours or points of similar elevation. Contour lines form "v" shapes in valleys or along stream beds. The point of the "v" points uphill.