Krokod\u00edly<\/strong> s\u00fa jedn\u00fdmi zo \u017eivo\u010d\u00ed\u0161nych druhov, ktor\u00e9 svoj vzh\u013ead v\u00a0z\u00e1sade nezmenili. Pomal\u00e9 evolu\u010dn\u00e9 tempo je <\/strong>u nich\u00a0v\u00fdhodou,<\/strong> ke\u010f\u017ee stavba ich tela bola od za\u010diatku prisp\u00f4soben\u00e1 na pre\u017eitie. Ko\u017ea na chrbte je zlo\u017een\u00e1 z tvrd\u00fdch \u0161trukt\u00far (osteodermy),<\/strong> ktor\u00e9 ju robia prakticky nepriestrelnou<\/strong>.<\/p>\n Dalo by sa poveda\u0165, \u017ee vzh\u013ead krokod\u00edlov je nad\u010dasov\u00fd. Mili\u00f3ny rokov si zachov\u00e1vaj\u00fa svoj zjav, ktor\u00fd im zaru\u010dene pomohol pre\u017ei\u0165 svojich vzdialen\u00fdch pr\u00edbuzn\u00fdch, dinosaury. zdroj: unsplash.com\n Pred 82 a\u017e 73 mili\u00f3nmi rokov<\/strong> bol jednozna\u010dne postrachom obr\u00ed krokod\u00edl so zubami ve\u013ek\u00fdmi ako ban\u00e1ny. Deinosuchus<\/strong>, doslova \u201ehroziv\u00fd krokod\u00edl\u201c<\/strong> meral osem a\u017e dvan\u00e1s\u0165 metrov <\/strong>and v\u00e1\u017eil aj p\u00e4\u0165 ton.<\/strong> \u017divil sa preva\u017ene m\u00e4kk\u00fd\u0161mi a korytna\u010dkami, pla\u0161il dinosaury, ktor\u00e9 sa pribl\u00ed\u017eili k brehu. Tieto hr\u00f4zostra\u0161n\u00e9 prehistorick\u00e9 zvierat\u00e1 \u017eili na \u00fazem\u00ed dne\u0161nej juhov\u00fdchodnej \u010dasti Severnej Ameriky a Mexika.<\/strong><\/p>\n Film Hady v\u00a0lietadle<\/strong> mo\u017eno svojho \u010dasu v\u00a0div\u00e1koch vyvolal do\u017eivotn\u00fa traumu \u00eds\u0165 na toaletu, ak by v\u0161ak tu\u0161ili ako vyzerala Titanoboa,<\/strong> bol by to pre nich slab\u00fd odvar. Po vyhynut\u00ed dinosaurov sa 15-metrov\u00fd had stal najv\u00e4\u010d\u0161\u00edm suchozemsk\u00fdm pred\u00e1torom.<\/strong> Ke\u010f sa koris\u0165 (korytna\u010dky, men\u0161ie krokod\u00edly) dostala dostato\u010dne bl\u00edzko, jej osud bol spe\u010daten\u00fd. Jeden a pol tonov\u00fd had bez v\u00e1hania zasiahol a svoju potravu rozdrvil v smrtiacom zovret\u00ed.<\/p>\n Pre\u0161iel v\u0161ak dlh\u00fd \u010das, k\u00fdm \u013eudia zistili o obrovskom hadovi, ktor\u00fd \u017eil asi pred 60 mili\u00f3nmi rokov.<\/strong> V\u00a0roku 2002 sa v\u00a0kolumbijskej uho\u013enej bani na\u0161iel mohutn\u00fd stavec. Po anal\u00fdze zistili, \u017ee Titanoboa kra\u013eovala tropick\u00fdm pralesom v Ju\u017enej Amerike.<\/strong><\/p>\n Stopy po vyhynutom zvierati \u2013 entelodontovi<\/strong> s\u00fa star\u00e9 19 a\u017e 38 mili\u00f3nov rokov.<\/strong> \u010ce\u013ea\u010f podobn\u00e1 prasa\u0165u svoj\u00edm unik\u00e1tnym zjavom zastra\u0161ovala nepriate\u013eov<\/strong> a preto si zasl\u00fa\u017eila pomenovanie \u201epekeln\u00e9 prasat\u00e1\u201c. Mali zuby ve\u013ek\u00e9 ako \u013eudsk\u00e9 z\u00e1p\u00e4stie,<\/strong> hrub\u00e9 kosti v tv\u00e1ri pou\u017e\u00edvali na\u00a0 s\u00faboje medzi sebou alebo s in\u00fdmi zvieratami. Rozmern\u00e1 \u010de\u013eus\u0165 tie\u017e sl\u00fa\u017eila na rozrytie p\u00f4dy a vyhrabanie korienkov, ktor\u00fdmi sa \u017eivili. Boli v\u0161ak v\u0161e\u017erav\u00e9 a miesto striehnutia na koris\u0165 odstra\u0161ili zvierat\u00e1, ktor\u00e9 sa im \u201epostarali\u201c o ve\u010deru.<\/strong><\/p>\n Najv\u00e4\u010d\u0161\u00ed z rodu pravek\u00fdch prasiat \u2013 Daeodon \u2013 mohol v\u00e1\u017ei\u0165 a\u017e 900 kilogramov. zdroj: pinterest.com\n Entelodont sa pod\u013ea b\u00e1dania roz\u0161\u00edril z\u00a0Mongolska do Eur\u00f3py a\u00a0Severnej Ameriky.<\/strong> Archeol\u00f3govia na\u0161li fos\u00edlie na miestach ako Nebraska, Wyoming a Ju\u017en\u00e1 Dakota. Postupn\u00e1 zmena kl\u00edmy znamenala pre prehistorick\u00e9 zvierat\u00e1 ich z\u00e1nik. Zelen\u00e9 lesy sa premenili na tr\u00e1vnat\u00e9 polia a\u00a0pri ceste za potravou na nich \u010dakali r\u00fdchlej\u0161ie m\u00e4so\u017eravce.<\/strong><\/p>\n Homo sapiens<\/strong> museli po\u010das Doby \u013eadovej \u010deli\u0165 medve\u010fovi jaskynn\u00e9mu<\/strong> (Ursus spealeus). Vedci sa nevedia zhodn\u00fa\u0165 \u010di \u017eili v symbi\u00f3ze alebo nie, na\u0161li v\u0161ak zop\u00e1r ind\u00edci\u00ed. Vo \u0161vaj\u010diarskej jaskyni Drachenloch sa na\u0161lo nieko\u013eko medved\u00edch lebiek.<\/strong> Sedem z nich bolo usporiadan\u00fdch tak, aby \u010delilo prednej \u010dasti jaskyne, \u010fal\u0161\u00edch \u0161es\u0165 ostalo vlo\u017een\u00fdch do jaskynn\u00fdch v\u00fdklenkov. Pra\u013eudia ich zrejme uctievali a d\u00f4kladne pozorovali<\/strong> \u2013 sved\u010dia o tom aj ma\u013eby n\u00e1jden\u00e9 v Chauvetovej jaskyni<\/strong> (Franc\u00fazsko), ktor\u00fdch vek sa odhaduje na 32\u00a0000 rokov.<\/strong><\/p>\n Ke\u010f\u017ee jaskyne za\u010dali ob\u00fdva\u0165 na\u0161i predkovia, postupne vytla\u010dili jaskynn\u00e9ho medve\u010fa zo svojho prirodzen\u00e9ho prostredia.<\/strong> Potravu si tak zver h\u013eadala v lese a vedci us\u00fadili, \u017ee nenap\u00e1dali \u013eud\u00ed, ale pochutn\u00e1vali si na rastlin\u00e1ch.<\/strong> Vzh\u013eadovo v\u0161ak rozhodne nevyzerali ne\u0161kodne. K\u00fdm ich pr\u00edbuzn\u00fd, medve\u010f grizly, dosahuje v stoji v\u00fd\u0161ku takmer 2,5 metra, jaskynn\u00fd medve\u010f mal viac ne\u017e tri metre.<\/strong><\/p>\n Chauvetovu jasky\u0148u spomenieme e\u0161te raz kv\u00f4li tomu, \u017ee pravek\u00e9 kresby odhalili \u010fal\u0161\u00ed druh, ktor\u00fd u\u017e neexistuje \u2013 srstnat\u00e9 nosoro\u017ece.<\/strong> Kv\u00f4li extr\u00e9mne chladn\u00e9mu po\u010dasiu im nar\u00e1stla srs\u0165 hrub\u00e1 nieko\u013eko centimetrov, ktor\u00fa na jar zhodili a\u00a0vysta\u010dili si s\u00a0krat\u0161ou.<\/strong> So s\u00fa\u010dasn\u00fdmi nosoro\u017ecami mali zhodn\u00fa v\u00fd\u0161ku a\u00a0v\u00e1hu (cca 1,80m, 3 tony). Okrem teplej pokr\u00fdvky tela sa odli\u0161ovali dlh\u0161\u00edm telom, hlavou a\u00a0krat\u0161\u00edmi nohami. Za ramenom sa im vyvinul hrb, ktor\u00fd sl\u00fa\u017eil na podopieranie rohov.<\/strong><\/p>\n Je a\u017e neuverite\u013en\u00e9, v akom dobrom stave bol srstnat\u00fd nosoro\u017eec objaven\u00fd. zdroj: pinterest.com\n Tvor mal ve\u013emi zl\u00fd zrak,<\/strong> preto sa riadil hlavne \u010duchom a\u00a0sluchom.<\/strong> Zareagoval na ak\u00e9ko\u013evek nebezpe\u010denstvo a\u00a0ke\u010f sa c\u00edtil v\u00a0ohrozen\u00ed, nev\u00e1hal za\u00fato\u010di\u0165.<\/strong> K vyhynutiu prispelo otep\u013eovanie, ktor\u00e9 ich v\u00a0posledn\u00fdch rokoch paradoxne odha\u013euje. V roku 2020 miestni obyvatelia vo v\u00fdchodnej Sib\u00edri<\/strong> narazili na zamrznut\u00e9 telo mlad\u00e9ho nosoro\u017eca srstnat\u00e9ho v topiacom sa permafroste.<\/strong> Zamrznut\u00e1 zem zachovala vn\u00fatornosti, srs\u0165 a dokonca aj roh.<\/p>\n Pre\u010do dosahovali prehistorick\u00e9 zvierat\u00e1 tak\u00e9 rozmery?<\/strong> Niektor\u00ed v\u00fdskumn\u00edci sa domnievaj\u00fa, \u017ee zvierat\u00e1 r\u00e1stli v d\u00f4sledku v\u00e4\u010d\u0161ej koncentr\u00e1cie kysl\u00edka v\u00a0atmosf\u00e9re. Alebo jeden z\u00e1nik spustil ve\u013ek\u00fd pokrok. Prv\u00e1 komplexn\u00e1 \u0161t\u00fadia ukazuje, \u017ee po vyhynut\u00ed dinosaurov za\u010dali \u017eivo\u010d\u00edchy meni\u0165 svoju ve\u013ekos\u0165.<\/strong> Odrazu mali v\u00e4\u010d\u0161iu mo\u017enos\u0165 v\u00fdberu potravy, tak\u017ee tomu prisp\u00f4sobili svoje tel\u00e1. Na ot\u00e1zku pre\u010do postupne prestali r\u00e1s\u0165,<\/strong> m\u00f4\u017ee by\u0165 viac odpoved\u00ed. Preva\u017euje v\u0161ak fakt, \u017ee so zvy\u0161uj\u00facou teplotou mali mas\u00edvne zvery probl\u00e9m rozpt\u00fdli\u0165 telesn\u00e9 teplo.<\/strong><\/p>\n Zdroje: www.allthatsinteresting.com, www.newscientist.com, www.sciencedaily.com, www.tech.sme.sk<\/strong><\/p>","protected":false},"excerpt":{"rendered":" Pravek\u00ed lovci Krokod\u00edly s\u00fa jedn\u00fdmi zo \u017eivo\u010d\u00ed\u0161nych druhov, ktor\u00e9 svoj vzh\u013ead v\u00a0z\u00e1sade nezmenili. Pomal\u00e9 evolu\u010dn\u00e9 tempo je u nich\u00a0v\u00fdhodou, ke\u010f\u017ee stavba ich tela bola od<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[51],"tags":[],"class_list":["post-7378","post","type-post","status-publish","format-standard","hentry","category-archiv","two-columns"],"_links":{"self":[{"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/posts\/7378","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/comments?post=7378"}],"version-history":[{"count":0,"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/posts\/7378\/revisions"}],"wp:attachment":[{"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/media?parent=7378"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/categories?post=7378"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/tags?post=7378"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\u201ePekeln\u00e9 prasat\u00e1\u201c a\u00a0bylino\u017erav\u00fd medve\u010f<\/h3>\n
Predchodcovia dne\u0161n\u00fdch nosoro\u017ecov<\/h3>\n