This marker represents a cluster of sites in the general area. Click the marker to display a list of the sites contained within. Zoom in further to "break up" the cluster and display the individual yellow site markers within.
	This marker indicates a survey site. Hover over the marker to display the place name. Click the marker to display additional information, including a link that will allow you to query the database for records from that site.
NOTE: You may experience slow performance with Internet Explorer when viewing large areas of the country. This is due to problems with how IE processes the markers. Please use another browser such as Firefox if possible.