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The images of the living OTUs (29 species) were made available in the early 1960s; those of the fossil ones (48 species) later in the decade. These images were copied using xerography . Copies of all OTUs were in the possession of Dr. Paul A. Ehrlich ( Stanford University ), Dr. W. Wayne Moss (Philadelphia Academy of Sciences) and Robert R ...
Genetics – Science of genes, heredity, and variation in living organisms; Biogeography – Study of distribution of species; Ecological genetics – Study of genetics in natural populations; Evolutionary biology – Study of the evolution of life Evolutionary developmental biology – Comparison of organism developmental processes
The Encyclopedia of Life (EOL) is a free, online encyclopedia intended to document all of the 1.9 million living species known to science. It aggregates content to form "pages" for every known species. Content is compiled from existing trusted databases which are curated by experts and it calls on the assistance of non-experts throughout the world.
The yacare caiman is the largest species in the genus, attaining an average adult length of 2.5 to 3 m (8.2 to 9.8 ft), [5] the spectacled caiman reaches 2 to 2.5 m (6.6 to 8.2 ft), with the female rather smaller, [6] and the broad-snouted caiman is the smallest, more typically measuring 1.8 to 2 m (5.9 to 6.6 ft) for males and 1.2 to 1.4 m (3. ...
Plesiomorphy, symplesiomorphy, apomorphy, and synapomorphy, all mean a trait shared between species because they share an ancestral species. [a] Apomorphic and synapomorphic characteristics convey much information about evolutionary clades and can be used to define taxa. However, plesiomorphic and symplesiomorphic characteristics cannot.
Viverridae is a family of small to medium-sized, feliform mammals.The viverrids (/ v aɪ ˈ v ɛ r ɪ d z /) comprise 33 species placed in 14 genera.This family was named and first described by John Edward Gray in 1821. [3]
The nomenclature and classification of plants with microphylls varies substantially among authors. A consensus classification for extant (living) species was produced in 2016 by the Pteridophyte Phylogeny Group (PPG I), which places them all in the class Lycopodiopsida, which includes the classes Isoetopsida and Selaginellopsida used in other ...
Gaviiformes (/ ˈ ɡ æ v i. ɪ f ɔːr m iː z /) is an order of aquatic birds containing the loons or divers and their closest extinct relatives. Modern gaviiformes are found in many parts of North America and northern Eurasia (Europe, Asia and debatably Africa), though prehistoric species were more widespread.