There are numerous varieties of animals and many persons are engaged in taxonomic work. As such there is every possibility of some confusion in nomenclature. Such a confusion did occur in the past. The same name has been given to different animals and different names have been given to the same animal. Linnaeus used some [...]
The species is the smallest category in classification. Species form a genus, genera a family, families an order, orders a class and the classes are combined into phyla. Several intermediate steps in classification are inserted to clarify the complexities of animal or plant relationships. The class may be divided into sub-classes, each containing several orders; [...]
By morphological, anatomical and physiological modifications of characters mammals have occupied all habitable spaces of the earth. Due to perfect adaptive radiation this group has become so vast that a satisfactory classification becomes a voluminous one. So, in this text we have restricted to classify this class up to Cohort mentioning the names of the [...]
Definition of Birds The vertebrate animals whose bodies are covered with feathers as exoskeleton structures are known as birds. Birds possess feathers and only birds possess them. Classification system The birds are so varied in number, adaptations, structures, shapes, food habits etc. that their true classification even upto order is a voluminous work. So, in [...]
Reptilia are regarded as first true land adapted animals as they began to lay eggs in fully terrestrial conditions as a first step towards successful land adaptation. To protect the embryo from desiccation the embryo was covered by extra embryonic membranes like amnion, chorion, allantois and yolk sac. Due to presence of amnion and chorion [...]
