Trinidad Tobago is diversified, based to a large extent on oil, natural gas, industry and agriculture. It is one of the leading gas-based export centres in the world, being the leading exporter of ammonia and methanol and among the top five exporters of liquefied natural gas. This has allowed Trinidad to capitalise on the biggest mineral reserves within its territories. It is an oil-rich country and stable economically. The Venezuela Tertiary Basin is a subsidence basin formed between the Caribbean and South American plates, and is bounded on the north by the coast ranges of Venezuela and the Northern Range of
Natural history of Trinidad and Tobago to be revised. To date (July 2014), the generally accepted recorded numbers of species of the various major groups of amphibians and reptiles are as follows: Frogs and toads (Anura): 37 species in total for the country. (33 recorded from Trinidad and 15 recorded on Tobago, with 4 of those from Tobago not known from Trinidad, and 2 of those from Trinidad known from just one specimen each. There is one introduced species, known on both Trinidad and Tobago). Caecilians (Gymnophonia): 1 species in total from Trinidad only. (Recorded from only 1 specimen). Turtles, terrapins and tortoises (Chelonii): 14 species