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More than 99 percent of all species, amounting to over five billion species, [7] that ever lived on Earth are estimated to be extinct. [8] [9] Estimates on the number of Earth's current species range from 10 million to 14 million, [10] of which about 1.2 million have been documented and over 86 percent have not yet been described. [11]
This is a collection of lists of mammal species by the estimated global population, divided by orders. Lists only exist for some orders; for example, the most diverse order - rodents - is missing. Much of the data in these lists were created by the International Union for Conservation of Nature (IUCN) Global Mammal Assessment Team, which ...
Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million in total. Animals range in size from 8.5 millionths of a metre to 33.6 metres (110 ft) long and have complex interactions with each other and their environments, forming intricate food webs.
The word animal comes from the Latin noun animal of the same meaning, which is itself derived from Latin animalis 'having breath or soul'. [6] The biological definition includes all members of the kingdom Animalia. [7] In colloquial usage, the term animal is often used to refer only to nonhuman animals.
Population Status Trend Notes Image Hainan black crested gibbon: Nomascus hainanus: 20–50 [1] CR [1] [1] Population was estimated at over 2,000 in the late 1950s. [1] Eastern black crested gibbon: Nomascus nasutus: 45–47 [2] CR [2] [2] Previously thought to be possibly extinct. Numbers may be higher. [2] Cat Ba langur: Trachypithecus ...
Deer of the World: Their Evolution, Behaviour, and Ecology. Stackpole Books. ISBN 978-0-8117-0496-0. Long, John L. (2003). Introduced Mammals of the World: Their History, Distribution and Influence. CABI Publishing. ISBN 978-0-643-06714-1. Reid, Fiona (2009). A Field Guide to the Mammals of Central America and Southeast Mexico (2nd ed.).
Estimate is from the 1980s, but population is stable. [20] Southern rockhopper penguin: Eudyptes chrysocome: 2 460 000 [21] VU [21] [21] Only mature individuals were included in the count (1.23 million pairs); population has declined 34% in the past 37 years. [21] Magellanic penguin: Spheniscus magellanicus: 2 600 000 [22] LC [22] [22]
The following is a list of the classes in each phylum of the kingdom Animalia. 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 ...