Artropodoj: Malsamoj inter versioj

▲They are important members of marine, freshwater, land and air [[ecosystem]]s, and are one of only two major animal groups that have adapted to life in dry environments; the other is [[amniote]]s, whose living members are [[reptile]]s, [[bird]]s and [[mammal]]s.<ref name="RuppertFoxBarnes2004P518">[[#refRuppert|Ruppert, Fox & Barnes (2004)]], pp. 518–522</ref> One arthropod sub-group, [[insect]]s, is the most species-rich member of all [[Guild (ecology)|ecological guilds]] in land and fresh-water environments.<ref name="Thompson1994CoevolutionaryProcess">{{citation |author=Thompson, J. N. |title=The Coevolutionary Process |publisher=[[University of Chicago Press]] |year=1994 |isbn=0-226-79760-0 |page=9 |url=https://books.google.com/?id=AyXPQzEwqPIC&pg=PA9&lpg=PA9&dq=arthropod+species+number}}</ref> The lightest insects weigh less than 25&nbsp;micrograms (millionths of a gram),<ref name="Schmidt-Nielsen1984InsectSize" /> while the heaviest weigh over {{convert|70|g|oz}}.<ref>{{citation |url=http://entnemdept.ufl.edu/walker/ufbir/chapters/chapter_30.shtml |work=Book of Insect Records |title=Largest |last=Williams |first=D.M. |date=April 21, 2001 |publisher=[[University of Florida]] |accessdate=June 10, 2009}}</ref> Some living [[crustacean]]s are much larger; for example, the legs of the [[Japanese spider crab]] may span up to {{convert|4|m|ft}},<ref name="Schmidt-Nielsen1984InsectSize">{{citation |author=Schmidt-Nielsen, K. |title=Scaling: Why is Animal Size So Important? |publisher=[[Cambridge University Press]] |year=1984 |isbn=0-521-31987-0 |pages=42–55 |url=https://books.google.com/?id=8WkjD3L_avQC&pg=PA53&dq=arthropod+size+range |chapter=The strength of bones and skeletons}}</ref> with the heaviest of all living arthropods being the [[American lobster]], topping out at over 20&nbsp;kg (44&nbsp;lbs).