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The Age of Reptiles was at one time the largest painting in the world, and depicts a span of nearly 350 million years in Earth's history.Painted in the Renaissance fresco secco technique, The Age of Reptiles was an important cultural influence during the 1950s–60s, images of which are often found in earlier books on paleontology, and was also the model for dinosaur toys.Despite its somewhat outdated view of dinosaurs (presenting them as slow, sluggish creatures), The Age of Reptiles is still notable for its historical and artistic merit and as the largest natural history painting in the world.It has been an inspiration to many visitors including both Robert Bakker and Peter Dodson, who credit it with influencing them to become paleontologists.
The Age of Reptiles was followed by the Age of Mammals.Agnatha name given to what was previously considered a class of jawless fish, including both Paleozoic ostracoderms and extant lampreys and hagfish.With the cladistic revolution, the term has been replaced by more phylogenetically accurate terms such as "basal vertebrate". Algorithm In mathematics and computer science, an effective method (a procedure that reduces the solution of some class of problems to a series of rote steps that give a specific and correct answer) expressed as a finite list of well-defined instructions for calculating a function.The traditional term "amphibian" is disliked by cladists because it does not constitute a natural clade and so is considered phylogenetically meaningless.Hence instead terms like basal tetrapod or the names of individual clades and taxa (temnospondyls, lepidospondyls, Lissamphibia, etc), are used. Archaea one of the three domains of life in the molecular phylogeny described by Carl Woese (originally Archaeobacteria, renamed Archaea by Woese et al 1990), prokaryotes that are metabolically and morphologically distinct from Eubacteria; includes many types of extremophiles, remnants from the earlier history of the earth. 2010 and other refs) rejects ancient origin on morphological and paleontological grounds.