{"id":18056,"date":"2026-01-02T04:25:45","date_gmt":"2026-01-02T04:25:45","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=18056"},"modified":"2026-01-02T04:25:45","modified_gmt":"2026-01-02T04:25:45","slug":"prehistoric-reptile-footprints-unearthed-in-grand-canyon","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/vi\/science\/natural-history\/prehistoric-reptile-footprints-unearthed-in-grand-canyon\/","title":{"rendered":"D\u1ea5u ch\u00e2n b\u00f2 s\u00e1t ti\u1ec1n s\u1eed 313 tri\u1ec7u n\u0103m tu\u1ed5i l\u1ed9 di\u1ec7n \u1edf Grand Canyon"},"content":{"rendered":"

D\u1ea5u ch\u00e2n b\u00f2 s\u00e1t ti\u1ec1n s\u1eed \u0111\u01b0\u1ee3c khai qu\u1eadt t\u1ea1i Grand Canyon<\/h2>\n\n

Kh\u00e1m ph\u00e1 v\u00e0 \u00fd ngh\u0129a<\/h2>\n\n

V\u00e0o n\u0103m 2016, nh\u00e0 \u0111\u1ecba ch\u1ea5t Allan Krill \u0111\u00e3 t\u00ecnh c\u1edd ph\u00e1t hi\u1ec7n m\u1ed9t \u0111i\u1ec1u th\u00fa v\u1ecb khi \u0111ang kh\u00e1m ph\u00e1 \u0111\u01b0\u1eddng m\u00f2n Bright Angel trong C\u00f4ng vi\u00ean Qu\u1ed1c gia Grand Canyon. Kh\u1eafc tr\u00ean m\u1ed9t t\u1ea3ng \u0111\u00e1 sa th\u1ea1ch l\u1edbn l\u00e0 h\u00e0ng lo\u1ea1t v\u1ebft l\u00f5m tr\u00f4ng gi\u1ed1ng nh\u01b0 nh\u1eefng d\u1ea5u ch\u00e2n c\u1ed5 \u0111\u1ea1i. Nh\u1eefng v\u1ebft n\u00e0y h\u00f3a ra l\u00e0 d\u1ea5u ch\u00e2n h\u00f3a th\u1ea1ch, l\u00e0 d\u1ea5u ch\u00e2n \u0111\u1ed9ng v\u1eadt c\u00f3 x\u01b0\u01a1ng c\u1ed5 \u0111\u1ea1i nh\u1ea5t t\u1eebng \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong c\u00f4ng vi\u00ean.<\/p>\n\n

Nh\u00e0 c\u1ed5 sinh v\u1eadt h\u1ecdc Stephen Rowland, ng\u01b0\u1eddi \u0111\u00e3 ki\u1ec3m tra nh\u1eefng d\u1ea5u ch\u00e2n n\u00e0y, \u01b0\u1edbc t\u00ednh ch\u00fang c\u00f3 ni\u00ean \u0111\u1ea1i kho\u1ea3ng 313 tri\u1ec7u n\u0103m tu\u1ed5i. Ph\u00e1t hi\u1ec7n \u0111\u00e1ng kinh ng\u1ea1c n\u00e0y kh\u00f4ng ch\u1ec9 l\u00e0m s\u00e1ng t\u1ecf qu\u00e1 tr\u00ecnh ti\u1ebfn h\u00f3a c\u1ee7a c\u00e1c lo\u00e0i \u0111\u1ed9ng v\u1eadt c\u00f3 x\u01b0\u01a1ng s\u1edbm m\u00e0 c\u00f2n cung c\u1ea5p b\u1eb1ng ch\u1ee9ng s\u1edbm nh\u1ea5t v\u1ec1 s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a amniota \u2013 nh\u1eefng lo\u00e0i \u0111\u1ed9ng v\u1eadt \u0111\u1ebb tr\u1ee9ng c\u00f3 v\u1ecf c\u1ee9ng \u2013 tr\u00ean th\u1ebf gi\u1edbi.<\/p>\n\n

Nh\u1eefng d\u1ea5u ch\u00e2n h\u00f3a th\u1ea1ch<\/h2>\n\n

T\u1ea3ng \u0111\u00e1 c\u00f3 ch\u1ee9a d\u1ea5u ch\u00e2n n\u00e0y n\u1eb7ng h\u00e0ng tr\u0103m pound, \u0111\u00e3 bong ra t\u1eeb Formation Manakacha, m\u1ed9t l\u1edbp \u0111\u00e1 sa th\u1ea1ch \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh c\u00e1ch \u0111\u00e2y kho\u1ea3ng 314 tri\u1ec7u n\u0103m. Nh\u1eefng d\u1ea5u ch\u00e2n \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh khi b\u1ec1 m\u1eb7t c\u00e1t b\u1ecb \u01b0\u1edbt r\u1ed3i kh\u00f4 \u0111i, b\u1ea3o t\u1ed3n c\u00e1c d\u1ea5u v\u1ebft trong h\u00e0ng tri\u1ec7u n\u0103m.<\/p>\n\n

C\u00f3 hai b\u1ed9 d\u1ea5u ch\u00e2n ri\u00eang bi\u1ec7t hi\u1ec7n r\u00f5 tr\u00ean b\u1ec1 m\u1eb7t t\u1ea3ng \u0111\u00e1. B\u1ed9 \u0111\u1ea7u ti\u00ean thu\u1ed9c v\u1ec1 m\u1ed9t con v\u1eadt \u0111\u00e3 \u0111i ch\u1eadm b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng ki\u1ec3u \u201c\u0111i tu\u1ea7n t\u1ef1 b\u00ean\u201d, trong \u0111\u00f3 c\u00e1c chi di chuy\u1ec3n theo m\u1ed9t tr\u00ecnh t\u1ef1 c\u1ee5 th\u1ec3 \u0111\u1ec3 gi\u1eef th\u0103ng b\u1eb1ng. B\u1ed9 d\u1ea5u ch\u00e2n th\u1ee9 hai cho th\u1ea5y m\u1ed9t nh\u1ecbp \u0111\u1ed9 h\u01a1i nhanh h\u01a1n.<\/p>\n\n

Hi\u1ec3u bi\u1ebft v\u1ec1 cu\u1ed9c s\u1ed1ng c\u1ee7a \u0111\u1ed9ng v\u1eadt c\u00f3 x\u01b0\u01a1ng s\u1edbm<\/h2>\n\n

Nghi\u00ean c\u1ee9u c\u00e1c d\u1ea5u ch\u00e2n \u0111\u00e3 cung c\u1ea5p hi\u1ec3u bi\u1ebft qu\u00fd gi\u00e1 v\u1ec1 h\u00e0nh vi v\u00e0 m\u00f4i tr\u01b0\u1eddng s\u1ed1ng c\u1ee7a c\u00e1c lo\u00e0i \u0111\u1ed9ng v\u1eadt c\u00f3 x\u01b0\u01a1ng s\u1edbm. Ki\u1ec3u \u0111i tu\u1ea7n t\u1ef1 b\u00ean quan s\u00e1t th\u1ea5y \u1edf m\u1ed9t trong nh\u1eefng con v\u1eadt l\u00e0 m\u1ed9t ki\u1ec3u di chuy\u1ec3n th\u01b0\u1eddng \u0111\u01b0\u1ee3c c\u00e1c lo\u00e0i t\u1ee9 chi s\u1ed1ng hi\u1ec7n nay nh\u01b0 ch\u00f3 v\u00e0 m\u00e8o s\u1eed d\u1ee5ng khi \u0111i ch\u1eadm. Ph\u00e1t hi\u1ec7n n\u00e0y cho th\u1ea5y ki\u1ec3u \u0111i n\u00e0y \u0111\u00e3 ti\u1ebfn h\u00f3a s\u1edbm trong l\u1ecbch s\u1eed \u0111\u1ed9ng v\u1eadt c\u00f3 x\u01b0\u01a1ng.<\/p>\n\n

H\u01a1n n\u1eefa, s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a d\u1ea5u ch\u00e2n amniota trong c\u00e1c \u0111\u1ee5n c\u00e1t \u0111\u00e3 \u0111\u1ea9y l\u00f9i d\u00f2ng th\u1eddi gian \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1ec1 vi\u1ec7c amniota s\u1ed1ng trong c\u00e1c m\u00f4i tr\u01b0\u1eddng nh\u01b0 v\u1eady th\u00eam \u00edt nh\u1ea5t 8 tri\u1ec7u n\u0103m. Ph\u00e1t hi\u1ec7n n\u00e0y b\u1ed5 sung th\u00eam hi\u1ec3u bi\u1ebft c\u1ee7a ch\u00fang ta v\u1ec1 s\u1ef1 \u0111a d\u1ea1ng h\u00f3a v\u00e0 th\u00edch nghi c\u1ee7a c\u00e1c lo\u00e0i \u0111\u1ed9ng v\u1eadt c\u00f3 x\u01b0\u01a1ng s\u1edbm.<\/p>\n\n

Tranh c\u00e3i v\u00e0 s\u1ef1 ph\u1ea5n kh\u00edch<\/h2>\n\n

Mark Nebel, ng\u01b0\u1eddi qu\u1ea3n l\u00fd ch\u01b0\u01a1ng tr\u00ecnh c\u1ed5 sinh v\u1eadt h\u1ecdc t\u1ea1i Grand Canyon, l\u01b0u \u00fd r\u1eb1ng m\u1ed9t s\u1ed1 kh\u00eda c\u1ea1nh c\u1ee7a k\u1ebft lu\u1eadn nghi\u00ean c\u1ee9u c\u00f3 th\u1ec3 ch\u1ecbu s\u1ef1 tranh lu\u1eadn khoa h\u1ecdc, \u0111\u1eb7c bi\u1ec7t l\u00e0 v\u1ec1 c\u00e1ch di\u1ec5n gi\u1ea3i c\u00e1c d\u1ea5u ch\u00e2n v\u00e0 tu\u1ed5i c\u1ee7a \u0111\u00e1. Tuy nhi\u00ean, \u00f4ng nh\u1ea5n m\u1ea1nh s\u1ef1 ph\u1ea5n kh\u00edch xung quanh kh\u00e1m ph\u00e1 n\u00e0y, v\u00ec n\u00f3 ti\u1ebft l\u1ed9 th\u00f4ng tin m\u1edbi v\u1ec1 th\u1ebf gi\u1edbi ti\u1ec1n s\u1eed v\u00e0 th\u00e1ch th\u1ee9c hi\u1ec3u bi\u1ebft c\u1ee7a ch\u00fang ta v\u1ec1 s\u1ef1 ti\u1ebfn h\u00f3a s\u1edbm c\u1ee7a \u0111\u1ed9ng v\u1eadt c\u00f3 x\u01b0\u01a1ng.<\/p>\n\n

K\u1ebft lu\u1eadn<\/h2>\n\n

Vi\u1ec7c ph\u00e1t hi\u1ec7n c\u00e1c d\u1ea5u ch\u00e2n b\u00f2 s\u00e1t c\u1ed5 \u0111\u1ea1i t\u1ea1i Grand Canyon \u0111\u00e3 m\u1edf ra m\u1ed9t c\u1eeda s\u1ed5 v\u00e0o qu\u00e1 kh\u1ee9 xa x\u01b0a, cung c\u1ea5p hi\u1ec3u bi\u1ebft qu\u00fd gi\u00e1 v\u1ec1 ngu\u1ed3n g\u1ed1c v\u00e0 h\u00e0nh vi c\u1ee7a c\u00e1c lo\u00e0i \u0111\u1ed9ng v\u1eadt c\u00f3 x\u01b0\u01a1ng s\u1edbm. Nghi\u00ean c\u1ee9u v\u1eabn \u0111ang ti\u1ebfp t\u1ee5c t\u1ea1o ra th\u1ea3o lu\u1eadn v\u00e0 nghi\u00ean c\u1ee9u, l\u00e0m phong ph\u00fa th\u00eam ki\u1ebfn th\u1ee9c c\u1ee7a ch\u00fang ta v\u1ec1 nh\u1eefng sinh v\u1eadt tuy\u1ec7t v\u1eddi n\u00e0y.<\/p>","protected":false},"excerpt":{"rendered":"

D\u1ea5u ch\u00e2n b\u00f2 s\u00e1t ti\u1ec1n s\u1eed \u0111\u01b0\u1ee3c khai qu\u1eadt t\u1ea1i Grand Canyon Kh\u00e1m ph\u00e1 v\u00e0 \u00fd ngh\u0129a V\u00e0o n\u0103m 2016, nh\u00e0 \u0111\u1ecba ch\u1ea5t Allan Krill \u0111\u00e3 t\u00ecnh c\u1edd ph\u00e1t hi\u1ec7n…<\/p>\n","protected":false},"author":2,"featured_media":25180,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[244],"tags":[23635,137,19362,22340,23636,1561],"class_list":["post-18056","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-natural-history","tag-ancient-reptiles","tag-paleontology","tag-fossil-footprints","tag-grand-canyon","tag-prehistoric-discovery","tag-vertebrate-evolution"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/18056","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\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/comments?post=18056"}],"version-history":[{"count":2,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/18056\/revisions"}],"predecessor-version":[{"id":25181,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/18056\/revisions\/25181"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/media\/25180"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/media?parent=18056"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/categories?post=18056"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/tags?post=18056"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}