{"id":11280,"date":"2024-05-20T21:36:27","date_gmt":"2024-05-20T21:36:27","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=11280"},"modified":"2024-05-20T21:36:27","modified_gmt":"2024-05-20T21:36:27","slug":"dinosaur-tiny-arms-like-t-rex","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/vi\/science\/paleontology\/dinosaur-tiny-arms-like-t-rex\/","title":{"rendered":"Meraxes gigas: Lo\u00e0i kh\u1ee7ng long m\u1edbi v\u1edbi c\u00e1nh tay nh\u1ecf nh\u01b0 T. Rex \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 c\u1ed5 sinh v\u1eadt h\u1ecdc ph\u00e1t hi\u1ec7n"},"content":{"rendered":"

C\u00e1c nh\u00e0 c\u1ed5 sinh v\u1eadt h\u1ecdc ph\u00e1t hi\u1ec7n ra lo\u00e0i kh\u1ee7ng long m\u1edbi v\u1edbi c\u00e1nh tay nh\u1ecf x\u00edu nh\u01b0 T. Rex<\/h2>\n\n

Ph\u00e1t hi\u1ec7n v\u00e0 \u00fd ngh\u0129a<\/h2>\n\n

Trong m\u1ed9t kh\u00e1m ph\u00e1 mang t\u00ednh \u0111\u1ed9t ph\u00e1, c\u00e1c nh\u00e0 c\u1ed5 sinh v\u1eadt h\u1ecdc \u0111\u00e3 khai qu\u1eadt \u0111\u01b0\u1ee3c m\u1ed9t lo\u00e0i kh\u1ee7ng long m\u1edbi \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean l\u00e0 Meraxes gigas. Lo\u00e0i \u0103n th\u1ecbt kh\u1ed5ng l\u1ed3 n\u00e0y thu\u1ed9c h\u1ecd kh\u1ee7ng long carcharodontosaurus, c\u00f9ng nh\u00f3m v\u1edbi Giganotosaurus mang t\u00ednh bi\u1ec3u t\u01b0\u1ee3ng xu\u1ea5t hi\u1ec7n trong b\u1ed9 phim Jurassic World: Dominion g\u1ea7n \u0111\u00e2y.<\/p>\n\n

M\u1eabu v\u1eadt Meraxes gigas \u0111\u00e1ng ch\u00fa \u00fd v\u00ec t\u00ednh ho\u00e0n ch\u1ec9nh c\u1ee7a n\u00f3, cung c\u1ea5p nh\u1eefng hi\u1ec3u bi\u1ebft c\u00f3 gi\u00e1 tr\u1ecb v\u1ec1 gi\u1ea3i ph\u1eabu v\u00e0 s\u1ef1 ti\u1ebfn h\u00f3a c\u1ee7a nh\u1eefng lo\u00e0i \u0103n th\u1ecbt th\u1eddi c\u1ed5 \u0111\u1ea1i n\u00e0y. H\u1ed9p s\u1ecd \u0111\u01b0\u1ee3c b\u1ea3o qu\u1ea3n t\u1ed1t v\u00e0 c\u00e1c chi g\u1ea7n nh\u01b0 ho\u00e0n ch\u1ec9nh, bao g\u1ed3m c\u1ea3 c\u00e1c chi tr\u01b0\u1edbc ng\u1eafn, l\u00e0m s\u00e1ng t\u1ecf nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m th\u00edch nghi \u0111\u1ed9c \u0111\u00e1o c\u1ee7a kh\u1ee7ng long carcharodontosaurus.<\/p>\n\n

Gi\u1ea3i ph\u1eabu so s\u00e1nh: Meraxes so v\u1edbi kh\u1ee7ng long b\u1ea1o ch\u00faa<\/h2>\n\n

Meraxes gigas th\u1ec3 hi\u1ec7n nh\u1eefng \u0111i\u1ec3m t\u01b0\u01a1ng \u0111\u1ed3ng \u0111\u00e1ng kinh ng\u1ea1c v\u1edbi lo\u00e0i kh\u1ee7ng long b\u1ea1o ch\u00faa Tyrannosaurus rex n\u1ed5i ti\u1ebfng, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u1edf \u0111\u00f4i tay nh\u1ecf b\u00e9 c\u1ee7a n\u00f3. To\u00e0n b\u1ed9 c\u00e1nh tay c\u1ee7a Meraxes c\u00f3 chi\u1ec1u d\u00e0i ch\u01b0a b\u1eb1ng m\u1ed9t n\u1eeda x\u01b0\u01a1ng \u0111\u00f9i, t\u1ef7 l\u1ec7 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi Tarbosaurus, m\u1ed9t lo\u00e0i h\u1ecd h\u00e0ng g\u1ea7n c\u1ee7a T. rex.<\/p>\n\n

Kh\u00e1m ph\u00e1 n\u00e0y cho th\u1ea5y r\u1eb1ng s\u1ef1 ti\u1ebfn h\u00f3a c\u1ee7a c\u00e1nh tay ng\u1eafn c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t ph\u1ea3n \u1ee9ng chung gi\u1eefa c\u00e1c lo\u00e0i kh\u1ee7ng long ch\u00e2n th\u00fa l\u1edbn, b\u1ea5t k\u1ec3 h\u1ecd h\u00e0ng c\u1ee7a ch\u00fang. Kh\u1ee7ng long b\u1ea1o ch\u00faa v\u00e0 kh\u1ee7ng long carcharodontosaurus, m\u1eb7c d\u00f9 ti\u1ebfn h\u00f3a \u1edf c\u00e1c b\u00e1n c\u1ea7u kh\u00e1c nhau, \u0111\u1ec1u ph\u00e1t tri\u1ec3n c\u00e1nh tay ng\u1eafn.<\/p>\n\n

Ch\u1ee9c n\u0103ng c\u1ee7a c\u00e1c chi tr\u01b0\u1edbc \u1edf lo\u00e0i \u0103n th\u1ecbt l\u1edbn<\/h2>\n\n

C\u00e2u h\u1ecfi t\u1ea1i sao nh\u1eefng lo\u00e0i kh\u1ee7ng long \u0103n th\u1ecbt l\u1edbn nh\u01b0 Meraxes v\u00e0 Tyrannosaurus rex l\u1ea1i ti\u1ebfn h\u00f3a c\u00e1nh tay ng\u1eafn t\u1eeb l\u00e2u \u0111\u00e3 khi\u1ebfn c\u00e1c nh\u00e0 c\u1ed5 sinh v\u1eadt h\u1ecdc b\u1ed1i r\u1ed1i. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 t\u00ecm th\u1ea5y m\u1ed1i t\u01b0\u01a1ng quan gi\u1eefa k\u00edch th\u01b0\u1edbc h\u1ed9p s\u1ecd v\u00e0 chi\u1ec1u d\u00e0i c\u00e1nh tay \u1edf m\u1ed9t s\u1ed1 nh\u00f3m ch\u00e2n th\u00fa. Nh\u1eefng con kh\u1ee7ng long c\u00f3 h\u1ed9p s\u1ecd l\u1edbn h\u01a1n c\u00f3 xu h\u01b0\u1edbng c\u00f3 c\u00e1nh tay ng\u1eafn h\u01a1n.<\/p>\n\n

\u0110i\u1ec1u n\u00e0y cho th\u1ea5y nh\u1eefng con kh\u1ee7ng long n\u00e0y ch\u1ee7 y\u1ebfu d\u1ef1a v\u00e0o nh\u1eefng c\u00fa c\u1eafn m\u1ea1nh m\u1ebd c\u1ee7a ch\u00fang \u0111\u1ec3 b\u1eaft con m\u1ed3i, ch\u1ee9 kh\u00f4ng s\u1eed d\u1ee5ng c\u00e1nh tay \u0111\u1ec3 ch\u1ed9p ho\u1eb7c gi\u1eef. C\u00e1nh tay ng\u1eafn c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t c\u00e1ch th\u00edch nghi \u0111\u1ec3 ng\u0103n ch\u00fang b\u1ecb th\u01b0\u01a1ng trong nh\u1eefng c\u00fa c\u1eafn m\u1ea1nh.<\/p>\n\n

S\u1ef1 ti\u1ebfn h\u00f3a c\u1ee7a vi\u1ec7c tho\u00e1i h\u00f3a c\u00e1nh tay \u1edf kh\u1ee7ng long carcharodontosaurus<\/h2>\n\n

Nh\u1eefng lo\u00e0i kh\u1ee7ng long carcharodontosaurus tr\u01b0\u1edbc \u0111\u00f3, nh\u01b0 Acrocanthosaurus, c\u00f3 c\u00e1c chi tr\u01b0\u1edbc d\u00e0i h\u01a1n. Tuy nhi\u00ean, c\u00e1c th\u00e0nh vi\u00ean sau n\u00e0y c\u1ee7a nh\u00f3m, bao g\u1ed3m c\u1ea3 Meraxes, \u0111\u00e3 ti\u1ebfn h\u00f3a c\u00e1c chi ng\u1eafn h\u01a1n nhi\u1ec1u. S\u1ef1 gi\u1ea3m d\u1ea7n chi\u1ec1u d\u00e0i c\u00e1nh tay n\u00e0y theo th\u1eddi gian cho th\u1ea5y r\u1eb1ng nh\u1eefng l\u1ee3i \u00edch c\u1ee7a vi\u1ec7c c\u00f3 c\u00e1nh tay ng\u1eafn \u0111\u00e3 v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi nhu c\u1ea7u v\u1ec1 c\u00e1c chi tr\u01b0\u1edbc d\u00e0i h\u01a1n, c\u00f3 ch\u1ee9c n\u0103ng h\u01a1n.<\/p>\n\n

B\u00ed \u1ea9n v\u1ec1 c\u00e1nh tay<\/h2>\n\n

M\u1eb7c d\u00f9 c\u00e1nh tay ng\u1eafn c\u1ee7a Meraxes v\u00e0 nh\u1eefng con kh\u1ee7ng long b\u1ea1o ch\u00faa l\u1edbn c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t s\u1ef1 th\u00edch nghi v\u1edbi phong c\u00e1ch s\u0103n m\u1ed3i c\u1ee7a ch\u00fang, nh\u01b0ng ch\u1ee9c n\u0103ng ch\u00ednh x\u00e1c c\u1ee7a nh\u1eefng ph\u1ea7n ph\u1ee5 n\u00e0y v\u1eabn c\u00f2n l\u00e0 m\u1ed9t b\u00ed \u1ea9n. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 t\u00ecm th\u1ea5y b\u1eb1ng ch\u1ee9ng cho th\u1ea5y nh\u1eefng chi tr\u01b0\u1edbc n\u00e0y kh\u00f4ng ho\u00e0n to\u00e0n v\u00f4 d\u1ee5ng, v\u00ec ch\u00fang v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c c\u01a1 b\u1eafp.<\/p>\n\n

C\u00e2u h\u1ecfi v\u1ec1 vi\u1ec7c nh\u1eefng con kh\u1ee7ng long \u0103n th\u1ecbt l\u1edbn n\u00e0y s\u1eed d\u1ee5ng c\u00e1nh tay ng\u1eafn c\u1ee7a ch\u00fang \u0111\u1ec3 l\u00e0m g\u00ec l\u00e0 ch\u1ee7 \u0111\u1ec1 c\u1ee7a c\u00e1c nghi\u00ean c\u1ee9u \u0111ang di\u1ec5n ra. C\u00f3 kh\u1ea3 n\u0103ng ch\u00fang \u0111\u00f3ng m\u1ed9t vai tr\u00f2 trong giao ph\u1ed1i, giao ti\u1ebfp ho\u1eb7c c\u00e1c h\u00e0nh vi kh\u00e1c v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c hi\u1ec3u \u0111\u1ea7y \u0111\u1ee7.<\/p>\n\n

Ph\u1ea7n k\u1ebft lu\u1eadn<\/h2>\n\n

Kh\u00e1m ph\u00e1 ra Meraxes gigas \u0111\u00e3 cung c\u1ea5p cho c\u00e1c nh\u00e0 c\u1ed5 sinh v\u1eadt h\u1ecdc r\u1ea5t nhi\u1ec1u th\u00f4ng tin m\u1edbi v\u1ec1 gi\u1ea3i ph\u1eabu v\u00e0 s\u1ef1 ti\u1ebfn h\u00f3a c\u1ee7a kh\u1ee7ng long carcharodontosaurus. S\u1ef1 k\u1ebft h\u1ee3p \u0111\u1ed9c \u0111\u00e1o gi\u1eefa h\u1ed9p s\u1ecd l\u1edbn v\u00e0 c\u00e1nh tay ng\u1eafn \u1edf lo\u00e0i kh\u1ee7ng long n\u00e0y l\u00e0m n\u1ed5i b\u1eadt s\u1ef1 \u0111a d\u1ea1ng v\u00e0 kh\u1ea3 n\u0103ng th\u00edch nghi \u0111\u00e1ng kinh ng\u1ea1c c\u1ee7a kh\u1ee7ng long ch\u00e2n th\u00fa.<\/p>\n\n

C\u00e1c nghi\u00ean c\u1ee9u s\u00e2u h\u01a1n v\u1ec1 Meraxes v\u00e0 c\u00e1c lo\u00e0i li\u00ean quan kh\u00e1c s\u1ebd ti\u1ebfp t\u1ee5c l\u00e0m s\u00e1ng t\u1ecf b\u00ed \u1ea9n v\u1ec1 s\u1ef1 tho\u00e1i h\u00f3a c\u00e1nh tay c\u1ee7a kh\u1ee7ng long v\u00e0 m\u1ed1i quan h\u1ec7 ti\u1ebfn h\u00f3a ph\u1ee9c t\u1ea1p gi\u1eefa nh\u1eefng lo\u00e0i \u0103n th\u1ecbt th\u1eddi c\u1ed5 \u0111\u1ea1i n\u00e0y.<\/p>","protected":false},"excerpt":{"rendered":"

C\u00e1c nh\u00e0 c\u1ed5 sinh v\u1eadt h\u1ecdc ph\u00e1t hi\u1ec7n ra lo\u00e0i kh\u1ee7ng long m\u1edbi v\u1edbi c\u00e1nh tay nh\u1ecf x\u00edu nh\u01b0 T. Rex Ph\u00e1t hi\u1ec7n v\u00e0 \u00fd ngh\u0129a Trong m\u1ed9t kh\u00e1m ph\u00e1…<\/p>\n","protected":false},"author":6,"featured_media":23388,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[137,15270,2704,664,5677,15269,136],"class_list":["post-11280","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-paleontology","tag-paleontology","tag-comparative-anatomy","tag-dinosaur","tag-tyrannosaurus-rex","tag-theropod","tag-carcharodontosaurus","tag-evolution"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/11280","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/comments?post=11280"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/11280\/revisions"}],"predecessor-version":[{"id":11281,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/11280\/revisions\/11281"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/media\/23388"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/media?parent=11280"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/categories?post=11280"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/tags?post=11280"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}