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McGraw Hill Financial, Inc. is an American publicly traded corporation headquartered in Rockefeller Center in New York City. Its primary areas of business are financial, publishing, and business services.
An order of mammals comprising one family (Cynocephalidae), one genus (<i>Cynocephalus</i>), and two species—<i>C. variegatus</i> (Malayan colugo) and <i>C. volans</i> (Philippine colugo). These mammals inhabit the rainforests of Southeast Asia from the Malay Peninsula and Thailand to the Philippine Islands, Java, and Borneo.
Industry:Science
An order of mammals comprising the living pangolins, or scaly anteaters, and their poorly known fossil predecessors. All living pangolins are assigned to the genus <i>Manis</i>. They are found in Africa south of the Sahara and in southeastern Asia, including certain islands of the East Indies.
Industry:Science
An order of mammals containing a single living genus <i>Orycteropus</i>, the aardvark. Aardvarks occur in suitable habitats throughout sub-Saharan Africa. This order exhibits the results of an extreme adaptation for burrowing and feeding on small food items (particularly termites and ants).
Industry:Science
An order of mammals containing the single family Macroscelididae (elephant shrews). Although formerly thought to be most closely associated with shrews, ungulates, and rabbits and hares, they are now thought to be most closely associated with elephants, aardvarks, golden moles, hyraxes, and sea cows on the basis of DNA investigations.
Industry:Science
An order of mammals, commonly known as bats, in which the front limbs are modified as wings, thus making the chiropterans the only truly flying mammals. Bats form the second largest order of living mammals (18 families, 202 genera, 1116 species). They range from the limit of trees in the Northern Hemisphere to the southern tips of Africa, New Zealand, and South America, but most species are confined to the tropics. On many oceanic islands they are the only native land mammals.
Industry:Science
An order of marine organisms that forms an important part of the class Ostracoda (subphylum Crustacea) and comprises three suborders. It has a long geological history that extends back at least to the Early Silurian. However, the lightly calcified carapaces of the species in this order are a factor in their having a sparse fossil record. Indeed, of the sixteen families of myodocopids, three are known only from modern marine environments. Species of those families that have a fossil record are quite rare and discontinuous in their stratigraphical distribution. Myodocopids are only abundant as fossils from organically rich shale that was deposited in deep, anoxic environments, especially those of the Devonian seas. Such environments were devoid of benthic (bottom-dwelling) life, but the valves and carapaces of the nektonic (free-swimming) myodocopids, both immature forms (termed instars) and adults, sank into such environments and were preserved. The rapid evolution of myodocopids during the Devonian Period has led to their use as guide fossils for dating these otherwise poorly fossiliferous marine rocks.
Industry:Science
An order of marine platyhelminthes of the class Turbellaria, generally regarded as primitive, and lacking protonephridia, oviducts, yolk glands, a permanent digestive cavity, and strictly delimited gonads. The nervous system is epidermal in the most primitive representatives and resembles that of cnidarians, but it is generally submuscular and consists of three to six pairs of longitudinal strands without anterior concentrations recognizable as a brain. The anterior or median ventral mouth opens into a simple pharynx which lacks elaborate musculature and leads directly to the syncytial vacuolated mass of endoderm forming the spongy intestinal tissue and lacking any true lumen.
Industry:Science
An order of marine Turbellaria which are several millimeters to several centimeters in length and whose leaflike bodies have a central intestine with radiating branches. Most of these platyhelminth species live in the littoral zone on the bottom, on seaweed or on other objects, or as commensals in the shells of mollusks and hermit crabs. None are parasitic. Except in warm waters, they are seldom brightly colored.
Industry:Science
An order of minute insects superficially resembling termites (Isoptera) or booklice (Psocoptera). Although species nest in decaying wood, they are of no economic importance. Interest in the group principally derives from their unique biology, anatomy, and evolutionary relationship to other insects.
Industry:Science
An order of monocotyledonous angiosperms composed of a single genus, <i>Acorus</i> (sweet flag or sweet calamus), with two species widespread in the Northern Hemisphere. Formerly, <i>Acorus</i> was included in the aroid family, Araceae, but several lines of evidence, including deoxyribonucleic acid (DNA) sequences, have firmly established it as the first-branching lineage of the monocotyledons. These species are emergent aquatics with peculiar inflorescences, and they are unusual among the monocots in having characters otherwise confined to the magnoliid dicots, such as the anther formation and the presence of ethereal oils. These oils are the basis of the species' frequent use as a medicine to treat toothache and dysentery, and as an ointment in religious ceremonies.
Industry:Science
