Dinosaurs are a group of animal from taxonomic,morphological and ecological point.They are one type of reptile,first appeared during the Triassic Period, between 231 and 243 million in year.They disappear from the earth 66 million years ago.Accurate origin of Dinosaur still in the research. Cockroaches are member of the order Blattodea .Almost 4,600 spices are described worldwide.The name ”Cockroach” comes from the Spanish word Cucaracha. But do you believe the fact that the cockroaches are more older than Dinosaurs??????????? This is very unbelievable fact that Cockroaches survived 120 million year and today they are on the earth. Cockroach prefers a warm,humid,dark environment.The food of cockroaches are both plant and animal product.They are mostly found in tropical climate.There are various type of cockroaches in all over world.Some of them are:- AMERICAN COCKROACH: American Cockroaches are reddish brown,and lives outdoor or in dark heated indoor areas.They has well-developed wings and female cockroach deposits 50 or more egg mass.
GERMAN COCKROACH: German Cockroaches are known as Croton bug, is light brown with dark stripes.They can not fly.They eat sugar,fatty food,meat and many other household items.German Cockroach develops an egg mass in her abdomen.
BROWN-BRANDED COCKROACH: Scientific name of German Cockroach is Supella Longipalpa,get their name from on the two lighter bands that they have on their bodies.They have fully developed wings.The adult females are shorter.They prefer warm and dry location.Adult female cockroaches are produces about 14 capsules and each capsules containing 13 egg.They eat non-food material.
ORIENTAL COCKROACH:This type of cockroaches are oval,black or dark brown in colour.They prefer warm places and comparatively high humidity.They deposited 16-18 eggs with distinct egg compartment housing.They are usually called water bugs.
WOOD COCKROACH: This type of cockroaches are brown in colour.They are very similar to the American Cockroaches in appearance.They eat organic materials.
According fossil records,the present day cockroach ancestors were present on the surface around 125 to 140 million years ago.The oldest cockroach fossil ever found was 350 million years old. But,named Nyasasaurus Parrington lived between 240 million and 245 million years ago when the earth continents were still stitched.