Obvykle si dinosaury p\u0159edstavujeme jako teplomiln\u00e1 stvo\u0159en\u00ed, ale nov\u00e9 objevy uk\u00e1zaly, \u017ee n\u011bkte\u0159\u00ed dinosau\u0159i, v\u010detn\u011b tyrannosaur\u016f, byli p\u0159izp\u016fsobeni k \u017eivotu v relativn\u011b chladn\u00fdch prost\u0159ed\u00edch, kde doch\u00e1zelo ke sn\u011b\u017een\u00ed.<\/p>\n\n
Jeden takov\u00fd objev u\u010dinila v roce 2011 postgradu\u00e1ln\u00ed studentka University of Utah Carrie Levittov\u00e1, kter\u00e1 po\u0159\u00eddila fotografii tyrannosaura ve sn\u011bhu p\u0159ed Muzeem Skalnat\u00fdch hor v Bozemanu v Montan\u011b. Tato fotografie dokl\u00e1d\u00e1, \u017ee dinosau\u0159i nebyli v\u00fdhradn\u011b tropick\u00fdmi zv\u00ed\u0159aty.<\/p>\n\n
Montana v obdob\u00ed k\u0159\u00eddy byla o n\u011bco odli\u0161n\u00e1 ne\u017e dnes, ale objevy u\u010din\u011bn\u00e9 na Alja\u0161ce a na Sibi\u0159i nazna\u010duj\u00ed, \u017ee n\u011bkte\u0159\u00ed dinosau\u0159i \u017eili v prost\u0159ed\u00edch, kter\u00e1 byla mnohem chladn\u011bj\u0161\u00ed, ne\u017e se d\u0159\u00edve myslelo. V t\u011bchto prost\u0159ed\u00edch pravd\u011bpodobn\u011b \u010das od \u010dasu doch\u00e1zelo ke sn\u011b\u017een\u00ed.<\/p>\n\n
Tyrannosau\u0159i byli jedni z nejzn\u00e1m\u011bj\u0161\u00edch dinosaur\u016f a jejich svalnat\u00e9 p\u0159edn\u00ed kon\u010detiny byly dob\u0159e p\u0159izp\u016fsobeny k lovu. V koulova\u010dce by v\u0161ak tyto p\u0159edn\u00ed kon\u010detiny byly sp\u00ed\u0161e nev\u00fdhodou!<\/p>\n\n
Sn\u00edh m\u016f\u017ee m\u00edt zna\u010dn\u00fd vliv na chov\u00e1n\u00ed dinosaur\u016f. Nap\u0159\u00edklad sn\u00edh m\u016f\u017ee dinosaur\u016fm zt\u00ed\u017eit hled\u00e1n\u00ed potravy a vody. M\u016f\u017ee jim tak\u00e9 zt\u011b\u017eovat pohyb, proto\u017ee jejich nohy se mohou bo\u0159it do sn\u011bhu.<\/p>\n\n
Krom\u011b toho m\u016f\u017ee sn\u00edh poskytnout pred\u00e1tor\u016fm v\u00fdhodu v podob\u011b maskov\u00e1n\u00ed. To proto, \u017ee sn\u00edh m\u016f\u017ee zakr\u00fdt stopy pred\u00e1tor\u016f, co\u017e dinosaur\u016fm zt\u011b\u017euje jejich vyh\u00fdb\u00e1n\u00ed se jim.<\/p>\n\n
Tyrannosau\u0159i m\u011bli \u0159adu adaptac\u00ed, kter\u00e9 jim pom\u00e1haly p\u0159e\u017e\u00edt v chladn\u00e9m podneb\u00ed. M\u011bli nap\u0159\u00edklad silnou k\u016f\u017ei a pe\u0159\u00ed, kter\u00e9 jim pom\u00e1halo izolovat se od zimy. M\u011bli tak\u00e9 velk\u00e9 nohy, kter\u00e9 pom\u00e1haly rozlo\u017eit jejich v\u00e1hu a zabr\u00e1nit jim v bo\u0159en\u00ed se do sn\u011bhu.<\/p>\n\n
A\u010dkoli byly svalnat\u00e9 p\u0159edn\u00ed kon\u010detiny tyrannosaur\u016f dob\u0159e p\u0159izp\u016fsobeny k lovu, v koulova\u010dce by byly nev\u00fdhodou. To proto, \u017ee jejich p\u0159edn\u00ed kon\u010detiny nebyly tak flexibiln\u00ed jako u jin\u00fdch dinosaur\u016f, nap\u0159\u00edklad u ornitomimosaur\u016f.<\/p>\n\n
Ornitomimid\u00e9 m\u011bli dlouh\u00e9, \u0161t\u00edhl\u00e9 p\u0159edn\u00ed kon\u010detiny, kter\u00e9 byly dob\u0159e p\u0159izp\u016fsobeny k h\u00e1zen\u00ed p\u0159edm\u011bt\u016f. To jim d\u00e1valo v koulova\u010dce zna\u010dnou v\u00fdhodu.<\/p>\n\n
Objev dinosaur\u016f v chladn\u00e9m podneb\u00ed poskytuje nov\u00e9 poznatky o chov\u00e1n\u00ed a adaptac\u00edch t\u011bchto prehistorick\u00fdch tvor\u016f. Tak\u00e9 zpochyb\u0148uje tradi\u010dn\u00ed pohled na dinosaury jako na v\u00fdhradn\u011b tropick\u00e1 zv\u00ed\u0159ata.<\/p>","protected":false},"excerpt":{"rendered":"
Pozorov\u00e1n\u00ed dinosaura: Mraziv\u00fd Tyrannosaurus Dinosau\u0159i ve sn\u011bhu Obvykle si dinosaury p\u0159edstavujeme jako teplomiln\u00e1 stvo\u0159en\u00ed, ale nov\u00e9 objevy uk\u00e1zaly, \u017ee n\u011bkte\u0159\u00ed dinosau\u0159i, v\u010detn\u011b tyrannosaur\u016f, byli p\u0159izp\u016fsobeni k \u017eivotu v relativn\u011b chladn\u00fdch…<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[15210,134,2435,15209,664],"class_list":["post-11235","post","type-post","status-publish","format-standard","hentry","category-paleontology","tag-adaptations","tag-dinosaurs","tag-snow","tag-cold-climates","tag-tyrannosaurus-rex"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/11235","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/comments?post=11235"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/11235\/revisions"}],"predecessor-version":[{"id":11236,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/11235\/revisions\/11236"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/media?parent=11235"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/categories?post=11235"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/tags?post=11235"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}