英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Prototheria - Wikipedia
    Prototheria ( ˌproʊtəˈθɪəriə, - toʊ - , PROH-toh-THEER-ee-ə; [1] from Ancient Greek πρώτος prṓtos "first" and θήρ thḗr "wild animal") is an obsolete subclass of mammals which includes the living Monotremata and to which a variety of extinct groups, including Morganucodonta, Docodonta, Triconodonta and Multituberculata, have also been assigned
  • ADW: Prototheria: INFORMATION
    Pro­tothe­ri­ans are ei­ther ter­res­trial (Tachy­glos­si­dae) or pri­mar­ily aquatic (Or­nithorhynchi­dae) Their ter­res­trial habi­tats in­clude deserts, sandy plains, rocky areas, and forests in both low­lands and moun­tains
  • Prototherians (Prototheria) - Know Your Mammals
    Prototherians include the iconic platypus (Ornithorhynchus anatinus) and several species of echidna, collectively known as monotremes These ancient mammals are a primal lineage dating back over 200 million years, offering a glimpse into the early evolution of mammals
  • Mammals - Prototheria - Mammalsrus. com
    The subclass Prototheria contains the egg-laying mammals, which are the most ancestral forms in the class Mammalia There are only five extant species grouped into two families and a single order, the Monotremata
  • Prototheria - Encyclopedia. com
    Prototheria A subclass of mammals – the monotremes – that lay large yolky eggs It contains only the duckbilled platypus and the spiny anteater After hatching, the young feed on milk from simple mammary glands inside a maternal abdominal pouch
  • Difference Between Prototheria Metatheria And Eutheria
    Prototheria, Metatheria, and Eutheria represent the three major mammalian groups, each defined by unique reproductive features: Prototheria lay eggs, Metatheria give birth to partially developed young that mature in a pouch, and Eutheria birth fully developed young
  • Prototheria - Simple English Wikipedia, the free encyclopedia
    The Prototheria is a former subclass of mammals, now no longer in use The name comes from Greek prōtos means 'first', and thēr , 'beast' The only surviving animals in this subclass are the Monotremes
  • Egg-laying Mammals (Prototheria) | U. S. Fish Wildlife Service
    Prototheria Identification Numbers TSN: 179914 Geography Working with others to conserve, protect and enhance fish, wildlife, plants and their habitats for the continuing benefit of the American people Footer Menu - Employment Careers Internships; Contracting; Footer Menu - Site Links
  • Eutherians vs. Prototheria - Whats the Difference? | This vs. That
    Eutherians, also known as placental mammals, give birth to live young that have been nourished in the womb through a placenta They are the most diverse group of mammals and include familiar animals such as dogs, cats, and humans Prototheria, on the other hand, are a small group of mammals that lay eggs instead of giving birth to live young
  • Prototheria - Oxford Reference
    Prototherians are distinguished from therians mainly by the skull wall, which in prototherians has a small squamosal and alisphenoid, and by their teeth The two subclasses began to diverge from a common stock during the late Triassic





中文字典-英文字典  2005-2009