Collaborative Decision Making (CDM) Welcome to Collaborative Decision Making (or CDM), stop three of your tour! CDM is a phrase that has very broad implications. It is really more a philosophy on how to conduct business between the various components of aviation transportation, both government and industry. There are 24 airlines currently participating in this initiative.
Frequently Asked Dinosaur Questions. Question #11: How many dinosaurs were there? Answer: There are over dinosaur 500 genera (the plural of genus) that have been found, named and scientifically accepted. There are about an additional 100 genera that are dubious (these are frequently referred to as nomen dubium).
There are about 8950 species of reptiles on Earth. Many more are currently being described and added to the list. The species are grouped into the following orders: Order Squamata Lizards and Snakes Order Chelonia/Testudines Tortoises and Turtles Order Crocodylia Crocodiles Order Rhyncocephalia Tuataras (of which there are only 2 species)