Along with their calendars -- the Tzolk'in, the Haab and the Long Count -- the Mayans also created their own math system. They used a series of dots and bars to signify numbers. One dot equaled one unit, while one bar equaled five units. A shell symbol signified zero.
Nullarbor is bounded in the west by the Western Australia-South Australian state border, in the south by the coastline adjoining the Great Australian Bight, to the east by the localities of Yalata and Yellabinna and to the north by the Trans-Australian Railway.ullarbor is located within the federal Division of Grey, the state electoral districts of Flinders and Giles, and the unincorporated area of South Australia.
The rim rock crowned snake (Tantilla oolitica), named after the Miami Rim Rock land arrangement,is a non-venomous endangered species of snake belonging to the Colubridae family. The rim rock crowned snake is endemic to the United States throughout southern Florida. The specific name, oolitica, refers to the oolitic limestone area of Florida in which the species is found. It is common that all snakes that belong to the Genus Tantilla, are relatively small and usually do not exceed 20 cm (8 in).