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Volume 1: Lower Animals (Protozoa, Sponges, Cnidarians, "Worms", Non-Hexapod Arthropods) Volume 2: Insects (Springtails and Relatives, Insects) Volume 3: Mollusks and Echinoderms (Mollusks, "Lophophorates", Non-Vertebrate Deuterostomes) Volume 4: Fishes 1; Volume 5: Fishes 2 and Amphibia; Volume 6: Reptiles; Volume 7-9: Birds; Volume 10-13: Mammals
Intended for primary and secondary school level readers, the first books were field guides illustrated by James Gordon Irving, with such titles as Birds (1949), Insects (1951), and Mammals (1955). The series later expanded beyond identification guides to cover a wider range of subjects, such as Geology (1972), Scuba Diving (1968) , and Indian ...
A mammal (from Latin mamma 'breast') [1] is a vertebrate animal of the class Mammalia (/ m ə ˈ m eɪ l i. ə /). Mammals are characterised by the presence of milk -producing mammary glands for feeding their young, a broad neocortex region of the brain, fur or hair , and three middle ear bones .
There are 5,416 living mammals identified on earth and roughly 1,251 have been newly discovered since 2006. [2] The major branches of mammalogy include natural history, taxonomy and systematics, anatomy and physiology, ethology, ecology, and management and control. [ 3 ]
In 1997, the classification of mammals was revised by Malcolm C. McKenna and Susan K. Bell. [10] The Classification of Mammals Above the species level, here referred to as the "McKenna/Bell classification", is a comprehensive work on the systematics, relationships, and occurrences of all mammal taxa, living and extinct, down through the rank of ...
There are 107 classes of animals in 33 phyla in this list. However, different sources give different numbers of classes and phyla. For example, Protura, Diplura, and Collembola are often considered to be the three orders in the class Entognatha. This list should by no means be considered complete and authoritative and should be used carefully.
The order Primates consists of 505 extant species belonging to 81 genera. This does not include hybrid species or extinct prehistoric species. Modern molecular studies indicate that the 81 genera can be grouped into 16 families; these families are divided between two named suborders and are grouped in those suborders into named clades, and some of these families are subdivided into named ...
(v. 2013.2, the data is current as of March 5, 2014 [1]) and Endangered Species Act: E - endangered, T - threatened XN, XE - experimental non essential or essential population E(S/A), T(S/A) - endangered or threatened due to similarity of appearance (selected only taxa found in the US, the data is current as of March 28, 2014 [2])