Edaphosaurus

24. srpna 2011 v 23:16 | forusrakos |  zvířata z prvohor
význam jména: pozemní ještěr
objevitel a rok popisu: Edward Cope, 1882
časové rozpětí: pozdní karbon - spodní perm
rozšíření: Severní Amerika, střední Evropa (především ČR a Slovensko)
tělesné rozměry: délka až 3,5 m, hmotnost 300 kg



Charakteristický znakem Edaphosaura je plachta na zádech s nervovými ostny, která sloužila k termoregulaci těla, tj. ochlazovala a oteplovala tělo v případě potřeby. Stejnou plachtu měl i největší predátor té doby Dimetrodon. Hlava byla poměrem k tělu extrémně malá a tělo bylo naopak poměrně mohutné a silné, to znamená, že si na Edaphosaura jen tak nějaký dravec netroufnul. Byl to převážně býložravec, ale podle ostrých zubů se domníváme, že napohrdnul ani bezobratlýmí živočichy. Nálezy u nás jsou v Nýřanech u Plzně a ve Zbýšově u Brna. Edaphosaurus bývá často zaměňován s dinosaury, ale žil dávno předtím, než se první dinosauři vyvinuli.


 

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