The Negros Shrew (Crocidura negrina) is a white-toothed shrew found only on the island Negros, Philippines. It is listed as a critically endangered species due to habitat loss and a restricted range. Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Phyla Porifera (sponges) Ctenophora (comb jellies) Cnidaria (coral, jellyfish, anenomes) Placozoa (trichoplax) Subregnum Bilateria (bilateral symmetry) Acoelomorpha (basal) Orthonectida (flatworms, echinoderms, etc. ... Typical Classes Subphylum Urochordata - Tunicates Ascidiacea Thaliacea Larvacea Subphylum Cephalochordata - Lancelets Subphylum Myxini - Hagfishes Subphylum Vertebrata - Vertebrates Petromyzontida - Lampreys Placodermi (extinct) Chondrichthyes - Cartilaginous fishes Acanthodii (extinct) Actinopterygii - Ray-finned fishes Actinistia - Coelacanths Dipnoi - Lungfishes Amphibia - Amphibians Reptilia - Reptiles Aves - Birds Mammalia - Mammals Chordates (phylum Chordata) include the vertebrates, together with... Orders Subclass Multituberculata (extinct) Plagiaulacida Cimolodonta Subclass Palaeoryctoides (extinct) Subclass Triconodonta (extinct) Subclass Eutheria (includes extinct ancestors)/Placentalia (excludes extinct ancestors) Afrosoricida Artiodactyla Carnivora Cetacea Chiroptera Cimolesta (extinct) Creodonta (extinct) Condylarthra (extinct) Dermoptera Desmostylia (extinct) Embrithopoda (extinct) Hyracoidea Insectivora Lagomorpha Litopterna (extinct) Macroscelidea Mesonychia (extinct) Notoungulata (extinct) Perissodactyla Pholidota Plesiadapiformes... Families Erinaceidae Soricidae Talpidae Solenodontidae The biological order Insectivora in the past was used as a scrapbasket for a variety of small to very small, relatively unspecialized, insectivorous mammals. ... Genera Anourosorex Blarina Blarinella Chimarrogale Congosorex Crocidura Cryptotis Diplomosodon Feroculus Megasorex Myoserex Nectogale Neomys Nesiotites Notiosorex Ruwenzorisorex Scutisorex Solisorex Sorex Soriculus Suncus Surdisorex Sylvisorex Shrews are small, superficially mouse-like mammals of the family Soricidae. ... In biology, binomial nomenclature is the formal method of naming species. ... 1952 (MCMLII) was a leap year starting on Tuesday (link will take you to calendar). ... Genera see species list The White-toothed shrews or Crocidurinae are one of two subfamilies of the shrew family Soricidae. ... Negros is an island of the Philippines located in the Visayas. ...
The White-toothed shrews or Crocidurinae are one of two subfamilies of the shrew family Soricidae.
Unlike the red-toothed shrews, the outer layer of their teeth is white.
This subfamily includes the largest shrew, the Asian House Shrew (Suncus murinus), at about 15 cm in length, and the smallest, the Pygmy White-toothed Shrew (Suncus etruscus), at about 3.5 cm in length and 2 grams in weight, possibly the world's smallest living mammal (although some give this title to the Bumblebee Bat).
Although unrelated, insectivores and tree shrews have a number of physical and behavioural features in common: both groups exhibit a number of primitive features, such as simplified dentition; all are predominantly insect-eating animals; and forests (both tropical and temperate) are one of the most important habitats of both groups.
Tree shrews, perhaps the most obvious and visible of the two groups, are an exception but until recently have been almost totally ignored by field ecologists.
Perhaps the greatest problem in formulating conservation recommendations for insectivores and tree shrews is the current lack of data on the ecology, distribution and conservation status of the vast majority of species.
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