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  • marine mammal
  • Welcome to the fifth annual post chronicling the year's publications on the marine mammal fossil record. (blogspot.com.br)
  • Recent efforts have yielded the first archaeocetes from South America, one of the only Aquitanian (earliest Miocene) marine mammal assemblages anywhere on earth, and the embarrassingly productive regions of the Pisco basin (Peru) and the Bahia Inglesa area (Chile). (blogspot.com.br)
  • Marine mammals are today linked to cold water temperatures and high primary productivity - making good marine mammal watching (typically) latitudinally constrained. (blogspot.com.br)
  • The Caribbean monk seal, Monachus tropicalis , last definitively reported in 1952, was one of the few marine mammal species to become extinct in historical times. (monachus-guardian.org)
  • species
  • The dosages of LA Immobilon were approximately15 to 30 times lower than recommended for other large-sized mammal species,and the therapeutic range was low. (awi.de)
  • extinct
  • When teeth of the extinct gondwanathere mammals were first discovered in Argentina in the 1980s, they were thought to be related to xenarthrans, leading to renewed attention for the hypothesis that xenarthrans are not placentals. (wikipedia.org)
  • Bonaparte argued against George Gaylord Simpson's 1931 view that xenarthrans derive from the Tertiary Palaeanodonta of North America, and instead suggested that xenarthrans, and perhaps pangolins, split from eutherians (placentals and their extinct relatives) as early as the Early Cretaceous and derived from some early "pantothere" (a now-abandoned grouping of early mammals, including dryolestoids among others). (wikipedia.org)
  • It does not include extant mammals or recently extinct mammals. (wikipedia.org)
  • Excluding bats, nearly 90% of the mammals of the Caribbean faunal region have gone extinct since the late Pleistocene, including all the sloths and monkeys, the unique insectivore Nesophontes, two of four species of solenodon, and a variety of rodents including all giant hutias, leaving only a few hutia species extant. (wikipedia.org)
  • Primates
  • A small percentage of the mammals are non-human primates, including the grivet, the rhesus macaque, and the crab-eating macaque, which are used in research for their similarity to humans. (wikipedia.org)
  • placentals
  • doi:10.1126/science.1229237 )) performed a fossil-only dating analysis of mammals, concluding that the ancestor of placentals post-dated the Cretaceous-Palaeogene boundary, contradicting previous palaeontological and molecular studies that placed the ancestor in the Cretaceous. (royalsocietypublishing.org)
  • In 1910, William King Gregory reviewed the interrelationships of mammals and placed edentates among other placentals, though he gave "Paratheria" as an alternative name for his superorder Edentata, which included Xenarthra and tentatively Pholidota (pangolins), Tubulidentata (aardvarks), and the fossil Taeniodonta. (wikipedia.org)
  • humans
  • Sexual selection in mammals started with Charles Darwin's observations concerning sexual selection, including sexual selection in humans, and in other mammals, consisting of male-male competition and mate choice that mold the development of future phenotypes in a population for a given species. (wikipedia.org)
  • morphological
  • If marine mammals share common morphological characteristics, what do your conclusions about their evolutionary history imply about these common characteristics? (google.com)
  • fauna
  • A unique and diverse albeit phylogenetically restricted mammal fauna is known from the Caribbean region. (wikipedia.org)
  • The restricted, unbalanced nature of the Caribbean mammal fauna implies that rafting was part of the overall process. (wikipedia.org)
  • The Mahajanga Basin of northwestern Madagascar has produced a rich late Cretaceous fauna, including various dinosaurs and crocodyliforms as well as mammals, found by the team of David W. Krause since 1993. (wikipedia.org)
  • Birds
  • Gracius Broinowski 's abandoned work, Birds and Mammals of Australia (1884), so closely imitated the plates that an injunction was threatened by its publisher. (wikipedia.org)
  • closely
  • Each of the ten episodes looks at one (or several closely related) mammal groups and discusses the different facets of their day-to-day existence and their evolutionary origins. (wikipedia.org)
  • taxonomic
  • Paratheria is an obsolete term for a taxonomic group including the xenarthran mammals (sloths, anteaters, and armadillos) and various groups thought to be related to them. (wikipedia.org)
  • Classification updated from Wilson and Reeder's Mammal Species of the World: A Taxonomic and Geographic Reference using the Planet' Mammifères website. (wikipedia.org)
  • Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed. (wikipedia.org)
  • mice
  • Culturally, mammals are the most popular of pets, with tens of millions of dogs, cats and other animals including rabbits and mice kept by families around the world. (wikipedia.org)
  • Millions of mammals, especially mice and rats, are used in experiments each year. (wikipedia.org)
  • agricultural
  • The new agricultural economies, based on domesticated mammals, caused "radical restructuring of human societies, worldwide alterations in biodiversity, and significant changes in the Earth's landforms and its atmosphere. (wikipedia.org)
  • newborn
  • Despite being a mammal, a newborn puppy can't regulate its own body temperature and therefore needs to huddle with its siblings and mother to keep warm. (reference.com)
  • earliest
  • Mammals such as horses and deer are among the earliest subjects of art, being found in the Upper Paleolithic cave paintings such as at Lascaux. (wikipedia.org)
  • fossils
  • The sudden appearance of placental fossils in the Palaeogene is consistent with an adaptive radiation of mammals assuming ecological niches left vacant by dinosaurs. (royalsocietypublishing.org)
  • Some claims were made about placental mammal fossils from the Eocene of Australia, called Tingamarra. (wikipedia.org)
  • typically
  • bodies of mammals typically covered with hair, which has no structural homology in other vertebrates. (shsu.edu)
  • Both species show extreme sexual dimorphism, possibly the largest of any mammal, with southern males typically five to six times heavier than the females. (wikipedia.org)
  • males
  • A good example of intrasexual selection, in which males fight for dominance over a harem of females, is the elephant seal - large, oceangoing mammals of the genus Mirounga. (wikipedia.org)
  • niches
  • The high diversity and endemicity of mammals is related to the many niches found in the tropical rain forest of Borneo and past Pleistocene events within the Sundaland region. (wikipedia.org)
  • animals
  • Mammals are one of the classes of vertebrate animals. (philadelphiazoo.org)
  • A major way that people relate to mammals (and some other animals) is by anthropomorphising them, ascribing human emotions and goals to them. (wikipedia.org)
  • Mammals serve a major role in science as experimental animals, both in fundamental biological research, such as in genetics, and in the development of new medicines, which must be tested exhaustively to demonstrate their safety. (wikipedia.org)
  • The mammals are such a widespread, varied and successful group of animals that Attenborough had previously devoted no fewer than five episodes of Life on Earth to them. (wikipedia.org)
  • groups
  • Molecular and palaeontological studies have supported a Cretaceous origin of Placentalia, but the age of placental mammal ordinal level crown groups (the 'modern' orders) relative to the K-Pg event has been the subject of protracted debate [ 2 - 7 ]. (royalsocietypublishing.org)
  • major
  • A study of the evolution and habits of the various mammal species, it was the fourth of Attenborough's specialised surveys following his major trilogy that began with Life on Earth. (wikipedia.org)
  • known
  • Several mammals are known from the Mesozoic of Madagascar. (wikipedia.org)
  • One molar fragment is one of the few known remains of a multituberculate mammal from Gondwana and another (UA 8699) has been interpreted as either a marsupial or a placental. (wikipedia.org)
  • Ambondro is the oldest known mammal with such a pattern. (wikipedia.org)