Hermelin

En lækat, hermelin (latin Mustela erminea) er et kødædende pattedyr.

Eksterne henvisninger

- [http://www.pattedyr.net/laekatskjern.htm Lækat] (billede) Kategori:Rovdyr ja:オコジョ

Pattedyr

Pattedyr
Billede:Løve.jpg
Klassifikation
Rige: Animalia (Dyr) Række: Chordata (Rygstrengsdyr) Klasse: Mammalia (Pattedyr)

Pattedyr (Mammalia) er oprindeligt landlevende hvirveldyr med fire lemmer, der primært kendetegnes af at være varmblodet, have en pels og at kunne producere modermælk. Navnet pattedyr kommer faktisk af, at deres dyreunger får mælk via mælkekirtler, som kaldes for patter.

Traditionel klassifikation

Pattedyrene opdeles traditionelt i tre store underklasser:
- Pattedyr Mammalia
- Kloakdyr (Prototheria), som lægger æg.
- Pungdyr (Metatheria), som bærer deres uudviklede unge i en pung.
- Placentale pattedyr (Eutheria indeholder Placentalia), som føder fuldt udviklede unge. Den største gruppe, de Placentale pattedyr, opdeles traditionelt i følgende ordener:
- Gumlere (Xenarthra): dovendyr, myreslugere, bæltedyr...
- Insektædere (Insectivora): spidsmus, pindsvin, muldvarpe...
- Elefantspidsmus eller Springspidsmus (Macroscelidea).
- Gnavere (Rodentia): mus, hamstere, hulepindsvin, bævere...
- Haredyr (Lagomorpha): kaniner, harer...
- Skældyr (Pholidota).
- Rovdyr (Carnivora): hunde, katte, bjørne, måre...
- Flagermus (Chiroptera).
- Træspidsmus (Scandentia)
- Primater (Primates) (lemurer, mennesket, menneskeaber)
- Kaguanger (Dermoptera).
- Jordsvin (Tubulidentata), familie Orycteropodidae
- Hvaler (Cetacea): (blåhval, kaskelothval, spækhugger, delfin.
- Parrettåede hovdyr (Artiodactyla): kvæg, ged, hjorte,antilope, kamel, flodhest, svin, giraf...
- Uparrettåede hovdyr (Perissodactyla) heste, næsehorn, tapirer...
- Søkøer (Sirenia): søko, dugong...
- Klippegrævlinge (Hyracoidea).
- Snabeldyr (Proboscidea): elefanter... Placering i Systematikken:
Domæne Eukaryota, Rige Animalia, Række Chordata, Underrække Vertebrata, Klasse Mammalia.

Systematik baseret på McKenna & Bell 1997

Et eksempel på en mere præcis opdeling, der dog foreslår nogle ændringer i forhold til den traditionelle inddeling, findes på: [http://sn2000.taxonomy.nl/Main/Classification/59574.htm Systema Naturae 2000: Mammaliaformes, Mammalia] og [http://sn2000.taxonomy.nl/Main/Classification/60492.htm Systema Naturae 2000: Placentalia]: Mammaliaformes
- Klasse Pattedyr Mammalia
- Underklasse Prototheria (omfatter her kloakdyr Monotremata som her er delt over):
- Orden Platypoda (Myrepindsvin)
- Orden Tachyglossa (Næbdyr)
- Underklasse Theriiformes, Infraklasse Holotheria, Overlegion Trechnotheria, Legion Cladotheria, Underlegion Zatheria, Infralegion Tribosphenida, Overkohort Theria
- Kohort Pungdyr Marsupialia (tidl. Metatheria) (pungrotter, inkaspidsmus, pungrovdyr, tasmanske djævel, punggrævlinger, pungmuldvarpe, koala, wombat, kænguru, wallaby, opossum...).
- Kohort Placentale pattedyr (Placentalia)
- Magnorden Gumlere Xenarthra tidl. Edentata (dovendyr, Bæltedyr, myresluger...)
- Magnorden Epitheria, Overorden Preptotheria
-
- Grandorden Anagalida
-
- Mirorden Elefantspidsmus Macroscelidea
-
- Mirorden Duplicidentata, Haredyr Støttetandede Lagomorpha (hare, vildkanin, kanin, pika...)
-
- Mirorden Simplicidentata, Orden Gnaver Rodentia
-
- Grandorden Ferae
-
- Orden Cimolesta
-
- Underorden Skældyr Pholidota
-
- Orden Rovdyr Carnivora (hund, katte, leopard, bjørne, væseler, lækat, zobel...)
-
- Grandorden Lipotyphla (tidl. Eulipotyphla Insektædere Insectivora)
-
- Orden Chrysochloridea, familie Guldmuldvarpe Chrysochloridae
-
- Orden Erinaceomorpha
-
- Overfamilie Erinaceoidea (pindsvin...)
-
- Overfamilie Muldvarpe Talpoidea (Europæisk muldvarp, muldvarp...)
-
- Orden Soricomorpha
-
- Overfamilie Soricoidea
-
- Spidsmus Soricidae (almindelig spidsmus, spidsmus...)
-
- Overfamilie Børstesvin Tenrecoidea
-
- Grandorden Archonta
-
- Orden Flagermus Chiroptera (flyvende hund, humlebiflagermus...)
-
- Orden Primater Primates (lemur, bonobo, chimpanse, gibbon, gorilla, makier, menneske, orangutang, silkeabe)
-
- Orden Træspidsmus Scandentia
-
- Grandorden Hovdyr Hovdyrene Ungulata
-
- Orden Tubulidentata, Orycteropodidae, Jordsvin
-
- Mirorden Eparctocyona
-
- Orden Cete, Underorden Hvaler Cetacea (blåhval, gråhval, kaskelothval, marsvin (hval), narhval, spækhugger, spermacethval, delfin, hectors delfin)
-
- Orden Parrettåede hovdyr Artiodactyla (antilope, dromedar, flodhest, får, ged, giraf, kamel, kvæg, moskusokse, bisonokse, rensdyr...)
-
- Mirorden Altungulata
-
- Orden Uparrettåede hovdyr Perissodactyla (hest, zebra, æsel, tapir, skaberaktapir, næsehorn)
-
- Orden Uranotheria, Underorden Tethytheria
-
- Infraorden Søkøer Sirenia (manata, dugong, søko...)
-
- Infraorden Behemota, Snabeldyr Proboscidea (mammut, elefant, afrikansk elefant, indisk elefant, asiatisk elefant)

Se også

- Vandlevende pattedyr

Eksterne henvisninger

- [http://hjem.get2net.dk/lars_skipper/pattedyr3.htm Lars Skipper, Dyr i Danmark: Pattedyr]
- [http://www.geocities.com/salt0011/dyr/pattedyr.htm pattedyr]
- dmoz: [http://dmoz.org/Science/Biology/Flora_and_Fauna/Animalia/Chordata/Mammalia/ Mammalia], [http://dmoz.org/Science/Biology/Zoology/Chordates/Mammalogy/ Zoology, Mammalogy]
- [http://www.enchantedlearning.com/subjects/mammals/classification/ mammals, classification], [http://www.allaboutmammals.com/ alternativ adresse]
- [http://www.aalborg-zoo.dk/struktur/dyr/dyr/fossa/ aalborg-zoo.dk: fossa]
- [http://www.ulve.adr.dk/info/andre.html ulve arter]
- [http://www.agroweb.bf.uni-lj.si/nomenklatura-multilingual1.htm MULTILINGUAL GLOSSARY OF COMMON NAMES OF ANIMALS, Latin-English-Slovenian-German-Spanish-French-Croatian-Hungarian-Italian-Portuguese]
- [http://news.bbc.co.uk/hi/english/sci/tech/newsid_1418000/1418794.stm BBCNews, 2 July, 2001, Another leap in evolution debate]
- [http://www.iol.co.za/index.php?set_id=1&click_id=31&art_id=vn20050113065309994C790723 January 13 2005, iol: Belly of beast shows dinosaurs weren't king] Citat: "...Scientists say the animal's last meal is probably the first proof that mammals hunted small dinosaurs about 130 million years ago..."
- [http://news.bbc.co.uk/1/hi/sci/tech/4204021.stm 24 January, 2005, BBC News: Whale and hippo 'close cousins'] Citat: "...A water-loving mammal that lived 50 to 60 million years ago was probably the "missing link" between whales and hippos, according to a new analysis..."Cetaceans are artiodactyls, but very derived artiodactyls." ..."
- [http://www.iol.co.za/index.php?set_id=1&click_id=31&art_id=vn20050204123232180C552313 February 04 2005, iol: Scientists link hippos to whales] Citat: "...a team of paleontologists says they've examined the bones and teeth of 10 living species of hippos, whales and pigs, and 22 of their fossil ancestors, and found evidence that the hippos' closest kin are indeed whales..." Kategori:Pattedyr Kategori:DK5 58.9 ja:哺乳類 ko:포유류 ms:Mamalia simple:Mammal th:สัตว์เลี้ยงลูกด้วยนม zh-min-nan:Chhī-leng tōng-bu̍t

Kategori:Rovdyr

Rovdyr (Carnivora) er en orden af pattedyr hvoraf mange – men ikke alle – arter spiser kød. Kategori:Pattedyr ko:분류:식육목

1740 in Canada

See also: 1739 in Canada, other events of 1740, 1741 in Canada and the list of 'years in Canada'. ----

Events

- 1740s: The Mandan Indians west of the Great Lakes begin to trade in horses descended from those brought to Texas by the Spanish. Itinerant Assiniboine Indians bring them from Mandan settlements to their own territories southwest of Lake Winnipeg.
- 1740-1748: The War of the Austrian Succession, with the American counterpart King George's War.

Births

Deaths

Category:1740 Category:Years in Canada

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