Trong v\u00f9ng \u0111\u1ea5t r\u1ed9ng l\u1edbn c\u1ee7a \u0110\u1edbi \u0111\u1ecba t\u1ea7ng Kaiparowits, n\u1eb1m g\u1ecdn trong \u0110\u00e0i t\u01b0\u1edfng ni\u1ec7m Qu\u1ed1c gia Grand Staircase-Escalante, m\u1ed9t h\u00f3a th\u1ea1ch \u0111\u00e1ng ch\u00fa \u00fd \u0111\u00e3 \u1ea9n m\u00ecnh su\u1ed1t m\u1ed9t ph\u1ea7n t\u01b0 th\u1ebf k\u1ef7. H\u00f3a th\u1ea1ch n\u00e0y, gi\u1edd \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 Mirarce eatoni, thu\u1ed9c v\u1ec1 enantiornithine, m\u1ed9t d\u00f2ng d\u00f5i chim c\u1ed5 \u0111\u1ea1i t\u1eebng c\u00f9ng t\u1ed3n t\u1ea1i v\u1edbi kh\u1ee7ng long trong K\u1ef7 Ph\u1ea5n tr\u1eafng.<\/p>\n\n
Jessie Atterholt, m\u1ed9t nh\u00e0 c\u1ed5 sinh v\u1eadt h\u1ecdc t\u00e0i n\u0103ng, \u0111\u00e3 t\u1ec9 m\u1ec9 ki\u1ec3m tra m\u1eabu v\u1eadt \u0111\u01b0\u1ee3c b\u1ea3o qu\u1ea3n \u0111\u1eb7c bi\u1ec7t t\u1ed1t n\u00e0y. H\u00f3a th\u1ea1ch h\u00e9 l\u1ed9 m\u1ed9t sinh v\u1eadt c\u00f3 k\u00edch th\u01b0\u1edbc \u1ea5n t\u01b0\u1ee3ng, t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi k\u1ec1n k\u1ec1n g\u00e0 t\u00e2y, v\u00e0 cho th\u1ea5y kho\u1ea3ng 30% b\u1ed9 x\u01b0\u01a1ng c\u1ee7a n\u00f3, bao g\u1ed3m g\u1ea7n nh\u01b0 m\u1ecdi b\u1ed9 ph\u1eadn tr\u00ean c\u01a1 th\u1ec3 ngo\u1ea1i tr\u1eeb h\u1ed9p s\u1ecd.<\/p>\n\n
Ph\u00e2n t\u00edch chi ti\u1ebft v\u1ec1 gi\u1ea3i ph\u1eabu c\u1ee7a Mirarce eatoni \u0111\u00e3 h\u00e9 l\u1ed9 m\u1ed9t lo\u1ea1t c\u00e1c th\u00edch nghi bay ti\u00ean ti\u1ebfn, gi\u00fap ph\u00e2n bi\u1ec7t n\u00f3 v\u1edbi nh\u1eefng h\u1ecd h\u00e0ng enantiornithine tr\u01b0\u1edbc \u0111\u00f3. \u0110\u00e1ng ch\u00fa \u00fd nh\u1ea5t, n\u00f3 s\u1edf h\u1eefu x\u01b0\u01a1ng \u1ee9c c\u00f3 g\u1edd x\u01b0\u01a1ng \u1ee9c s\u00e2u, cung c\u1ea5p nhi\u1ec1u \u0111i\u1ec3m b\u00e1m cho c\u00e1c c\u01a1 bay kh\u1ecfe, t\u01b0\u01a1ng t\u1ef1 nh\u01b0 nh\u1eefng c\u01a1 \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y \u1edf c\u00e1c lo\u00e0i chim hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n
H\u01a1n n\u1eefa, x\u01b0\u01a1ng quai xanh c\u1ee7a n\u00f3, ho\u1eb7c x\u01b0\u01a1ng furcula, cho th\u1ea5y h\u00ecnh ch\u1eef V \u0111\u1eb7c bi\u1ec7t, m\u1ed9t \u0111\u1eb7c \u0111i\u1ec3m gi\u00fap t\u0103ng c\u01b0\u1eddng s\u1ee9c m\u1ea1nh v\u1ed7 c\u00e1nh c\u1ee7a n\u00f3. S\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a “n\u00fam l\u00f4ng” tr\u00ean c\u1eb3ng tay cho bi\u1ebft c\u00e1c \u0111i\u1ec3m b\u00e1m c\u1ee7a l\u00f4ng bay, gi\u00fap lo\u00e0i chim n\u00e0y c\u00f3 th\u1ec3 bay l\u01b0\u1ee3n tr\u00ean kh\u00f4ng trung v\u1edbi hi\u1ec7u su\u1ea5t cao h\u01a1n v\u00e0 trong ph\u1ea1m vi xa h\u01a1n.<\/p>\n\n
Enantiornithine, m\u1eb7c d\u00f9 c\u00f3 nh\u1eefng th\u00edch nghi bay ti\u00ean ti\u1ebfn, nh\u01b0ng l\u1ea1i bi\u1ebfn m\u1ea5t m\u1ed9t c\u00e1ch b\u00ed \u1ea9n trong s\u1ef1 ki\u1ec7n tuy\u1ec7t ch\u1ee7ng h\u00e0ng lo\u1ea1t \u0111\u00e3 x\u00f3a s\u1ed5 kh\u1ee7ng long v\u00e0 nhi\u1ec1u lo\u00e0i kh\u00e1c c\u00e1ch \u0111\u00e2y 65 tri\u1ec7u n\u0103m. B\u00ed \u1ea9n n\u00e0y \u0111\u00e3 khi\u1ebfn c\u00e1c nh\u00e0 c\u1ed5 sinh v\u1eadt h\u1ecdc b\u1ed1i r\u1ed1i trong nhi\u1ec1u th\u1eadp k\u1ef7.<\/p>\n\n
M\u1ed9t gi\u1ea3 thuy\u1ebft ph\u1ed5 bi\u1ebfn cho r\u1eb1ng enantiornithine c\u00f3 th\u1ec3 ph\u1ee5 thu\u1ed9c nhi\u1ec1u v\u00e0o m\u00f4i tr\u01b0\u1eddng s\u1ed1ng l\u00e0 r\u1eebng, n\u01a1i ch\u00fang \u0111\u1eadu v\u00e0 l\u00e0m t\u1ed5. M\u1ed9t s\u1ef1 ki\u1ec7n th\u1ea3m kh\u1ed1c, ch\u1eb3ng h\u1ea1n nh\u01b0 va ch\u1ea1m c\u1ee7a ti\u1ec3u h\u00e0nh tinh ho\u1eb7c phun tr\u00e0o n\u00fai l\u1eeda, c\u00f3 th\u1ec3 \u0111\u00e3 t\u00e0n ph\u00e1 c\u00e1c khu r\u1eebng tr\u00ean to\u00e0n th\u1ebf gi\u1edbi, x\u00f3a s\u1ed5 m\u00f4i tr\u01b0\u1eddng s\u1ed1ng ch\u00ednh c\u1ee7a ch\u00fang v\u00e0 d\u1eabn \u0111\u1ebfn s\u1ef1 tuy\u1ec7t ch\u1ee7ng c\u1ee7a ch\u00fang.<\/p>\n\n
\u0110i\u1ec1u th\u00fa v\u1ecb l\u00e0 nh\u1eefng th\u00edch nghi bay ti\u00ean ti\u1ebfn m\u00e0 Mirarce eatoni th\u1ec3 hi\u1ec7n l\u1ea1i t\u01b0\u01a1ng \u0111\u1ed3ng v\u1edbi nh\u1eefng th\u00edch nghi \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y \u1edf c\u00e1c lo\u00e0i chim hi\u1ec7n \u0111\u1ea1i. Kh\u00e1m ph\u00e1 n\u00e0y \u0111\u1eb7t ra c\u00e2u h\u1ecfi v\u1ec1 c\u00e1c con \u0111\u01b0\u1eddng ti\u1ebfn h\u00f3a d\u1eabn \u0111\u1ebfn s\u1ef1 s\u1ed1ng s\u00f3t c\u1ee7a c\u00e1c lo\u00e0i chim hi\u1ec7n \u0111\u1ea1i trong khi nh\u1eefng ng\u01b0\u1eddi anh em h\u1ecd enantiornithine c\u1ee7a ch\u00fang l\u1ea1i di\u1ec7t vong.<\/p>\n\n
C\u00e1c nh\u00e0 c\u1ed5 sinh v\u1eadt h\u1ecdc suy \u0111o\u00e1n r\u1eb1ng t\u1ed5 ti\u00ean c\u1ee7a c\u00e1c lo\u00e0i chim hi\u1ec7n \u0111\u1ea1i c\u00f3 th\u1ec3 s\u1edf h\u1eefu m\u1ed9t s\u1ed1 l\u1ee3i th\u1ebf nh\u1ea5t \u0111\u1ecbnh cho ph\u00e9p ch\u00fang v\u01b0\u1ee3t qua \u0111\u01b0\u1ee3c s\u1ef1 ki\u1ec7n tuy\u1ec7t ch\u1ee7ng h\u00e0ng lo\u1ea1t. Nh\u1eefng l\u1ee3i th\u1ebf n\u00e0y c\u00f3 th\u1ec3 bao g\u1ed3m c\u00e1c th\u00edch nghi \u0111\u1ec3 l\u00e0m t\u1ed5 tr\u00ean m\u1eb7t \u0111\u1ea5t, ngu\u1ed3n th\u1ee9c \u0103n \u0111a d\u1ea1ng h\u01a1n ho\u1eb7c kh\u1ea3 n\u0103ng bay v\u01b0\u1ee3t tr\u1ed9i gi\u00fap ch\u00fang tho\u00e1t kh\u1ecfi nh\u1eefng t\u00e1c \u0111\u1ed9ng t\u00e0n ph\u00e1 c\u1ee7a vi\u1ec7c m\u1ea5t m\u00f4i tr\u01b0\u1eddng s\u1ed1ng.<\/p>\n\n
Vi\u1ec7c ph\u00e1t hi\u1ec7n ra Mirarce eatoni v\u00e0 c\u00e1c th\u00edch nghi bay ti\u00ean ti\u1ebfn c\u1ee7a n\u00f3 \u0111\u00e3 l\u00e0m s\u00e2u s\u1eafc th\u00eam b\u00ed \u1ea9n xung quanh s\u1ef1 tuy\u1ec7t ch\u1ee7ng c\u1ee7a enantiornithine. C\u00e1c n\u1ed7 l\u1ef1c nghi\u00ean c\u1ee9u \u0111ang di\u1ec5n ra nh\u1eb1m m\u1ee5c \u0111\u00edch kh\u00e1m ph\u00e1 l\u00fd do khi\u1ebfn ch\u00fang bi\u1ebfn m\u1ea5t v\u00e0 l\u00e0m s\u00e1ng t\u1ecf l\u1ecbch s\u1eed ti\u1ebfn h\u00f3a c\u1ee7a lo\u00e0i chim bi\u1ebft bay.<\/p>","protected":false},"excerpt":{"rendered":"
Chim Enantiornithine: Nh\u1eefng phi c\u00f4ng c\u1eeb kh\u00f4i t\u1eeb K\u1ef7 nguy\u00ean Kh\u1ee7ng long Ph\u00e1t hi\u1ec7n v\u00e0 M\u00f4 t\u1ea3 Trong v\u00f9ng \u0111\u1ea5t r\u1ed9ng l\u1edbn c\u1ee7a \u0110\u1edbi \u0111\u1ecba t\u1ea7ng Kaiparowits, n\u1eb1m g\u1ecdn trong…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[6344,137,6345,6347,6346,1381,561],"class_list":["post-3281","post","type-post","status-publish","format-standard","hentry","category-paleontology","tag-enantiornithines","tag-paleontology","tag-dinosaur-era","tag-mirarce-eatoni","tag-flight-adaptations","tag-bird-evolution","tag-mass-extinction"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/3281","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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/comments?post=3281"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/3281\/revisions"}],"predecessor-version":[{"id":3282,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/3281\/revisions\/3282"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/media?parent=3281"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/categories?post=3281"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/tags?post=3281"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}