{"id":65119,"date":"2026-10-26T11:50:27","date_gmt":"2026-10-26T11:50:27","guid":{"rendered":"https:\/\/cp.snarskis.lt\/index.php\/2026\/10\/26\/juros-periodo-sensacija-vajominge-aptiktas-vienas-storiausiu-kalmara-primenanciu-padaru\/"},"modified":"2026-10-26T11:50:27","modified_gmt":"2026-10-26T11:50:27","slug":"juros-periodo-sensacija-vajominge-aptiktas-vienas-storiausiu-kalmara-primenanciu-padaru","status":"publish","type":"post","link":"https:\/\/cp.snarskis.lt\/index.php\/2026\/10\/26\/juros-periodo-sensacija-vajominge-aptiktas-vienas-storiausiu-kalmara-primenanciu-padaru\/","title":{"rendered":"Juros periodo sensacija: Vajominge aptiktas vienas storiausi\u0173 kalmar\u0105 primenan\u010di\u0173 padar\u0173"},"content":{"rendered":"

Paleontologai Vajominge, JAV, i\u0161 dviej\u0173 fosilij\u0173, rast\u0173 senovin\u0117s vidaus j\u016bros nuogulose, apra\u0161\u0117 nauj\u0105 juros periodo galvakojo r\u016b\u0161\u012f, primenan\u010di\u0105 kalmar\u0105. Mokslininkai teigia, kad tai vienas storiausi\u0173 iki \u0161iol \u017einom\u0173 \u0161iai i\u0161nykusiai grupei priklausiusi\u0173 gyv\u016bn\u0173.<\/p>\n

Naujajai r\u016b\u0161iai suteiktas pavadinimas Wyoteuthis linsterorum, pagerbiant patyrus\u012f fosilij\u0173 ie\u0161kotoj\u0105 Cliff\u0105 Linstera, kuris aptiko vien\u0105 i\u0161 radini\u0173. Tai kol kas vienintel\u0117 \u017einoma Wyoteuthis genties r\u016b\u0161is, o jos apra\u0161ymas paskelbtas mokslo \u017eurnale Papers in Palaeontology.<\/p>\n

Kas tai per gyv\u016bnas?<\/h2>\n

Wyoteuthis priklaus\u0117 belemnitams \u2013 i\u0161nykusiai galvakoj\u0173 moliusk\u0173 b\u016briui, kuris klest\u0117jo juros laikotarpiu. \u0160i\u0173 gyv\u016bn\u0173 tolimi \u0161iandieniniai giminai\u010diai yra kalmarai ir a\u0161tuonkojai, ta\u010diau belemnitai tur\u0117jo ir kiet\u0105 vidin\u0119 strukt\u016br\u0105.<\/p>\n

Belemnit\u0173 \u201eskeletas\u201c susid\u0117jo i\u0161 dviej\u0173 dali\u0173: k\u016bgio formos vidin\u0117s kriaukl\u0117s, kurioje b\u016bdavo aragonito, ir tvirtesn\u0117s kalkitin\u0117s dalies, vadinamos rostru. B\u016btent rostrai da\u017eniausiai ir i\u0161lieka kaip fosilijos, tod\u0117l j\u0173 gausu \u012fvairiuose juros periodo sluoksniuose visame pasaulyje.<\/p>\n

Kuo ji i\u0161skirtin\u0117?<\/h2>\n

\u0160ios r\u016b\u0161ies rostras mokslininkams pasirod\u0117 ne\u012fprastai masyvus: jo skersmuo priekin\u0117je dalyje siek\u0117 apie 60 milimetr\u0173, o ilgis, remiantis i\u0161likusiomis dalimis, gal\u0117jo b\u016bti ma\u017edaug 160\u2013175 milimetrai. Palyginimui, dauguma Vajominge randam\u0173 belemnit\u0173 rostr\u0173 paprastai b\u016bna 50\u2013100 milimetr\u0173 ilgio ir 10\u201320 milimetr\u0173 plo\u010dio.<\/p>\n

\u201e\u0160ie rostrai yra storiausi, kokie iki \u0161iol \u017einomi belemnitams\u201c, \u2013 teigiama tyr\u0117j\u0173 publikacijoje. Vis d\u0117lto mokslininkai pabr\u0117\u017eia, kad vien rostras automati\u0161kai nerei\u0161kia mil\u017eini\u0161ko gyv\u016bno ar i\u0161skirtinai auk\u0161tos vietos mitybos grandin\u0117je.<\/p>\n

Pagal taikomus skai\u010diavimo metodus, visas gyv\u016bnas, \u012fskaitant \u010diuptuvus, gal\u0117jo siekti apie 55\u201360 centimetr\u0173. Tyr\u0117jai taip pat svarsto, kad retas \u0161ios r\u016b\u0161ies aptikimas gali rodyti siaur\u0105 ekologin\u0119 specializacij\u0105, pavyzd\u017eiui, specifin\u012f grob\u012f ar gyvenam\u0105j\u0105 aplink\u0105.<\/p>\n

Kod\u0117l tokie radiniai svarb\u016bs?<\/h2>\n

Belemnitai yra svarb\u016bs suprantant juros j\u016br\u0173 ekosistemas ir galvakoj\u0173 evoliucij\u0105, nes j\u0173 fosilijos leid\u017eia atkurti, kaip skirtingos linijos prisitaik\u0117 prie aplinkos poky\u010di\u0173. Wyoteuthis linsterorum priskiriamas Megateuthididae \u0161eimai, kuriai priklaus\u0117 ir did\u017eiausi \u017einomi belemnitai.<\/p>\n

Tyr\u0117jai primena, kad dalis \u0161ios grup\u0117s atstov\u0173 suklest\u0117jo po toarkio i\u0161nykimo \u012fvykio, kai vandenynuose suma\u017e\u0117jo deguonies. V\u0117liau, vidurinio juros laikotarpiu, dauguma \u0161ios \u0161eimos linij\u0173 i\u0161nyko, tod\u0117l naujai apra\u0161yta r\u016b\u0161is gali b\u016bti reta, v\u0117lyva ir ne\u012fprastai i\u0161siskirianti i\u0161likusi linijos at\u0161aka.<\/p>\n","protected":false},"excerpt":{"rendered":"

Vajominge rastos dvi fosilijos atskleid\u0117 nauj\u0105 juros belemnit\u0173 r\u016b\u0161\u012f, kuri i\u0161siskiria ne\u012fprastai storu rostru ir kelia nauj\u0173 klausim\u0173 apie jos ekologij\u0105.<\/p>\n","protected":false},"author":0,"featured_media":65120,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[10],"tags":[50013,1525,32503,11392,1529,50014,14207],"miestas":[],"class_list":["post-65119","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mokslas","tag-belemnitai","tag-fosilijos","tag-galvakojai-moliuskai","tag-jura","tag-paleontologija","tag-papers-in-palaeontology","tag-vajomingas"],"acf":[],"_links":{"self":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts\/65119","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/comments?post=65119"}],"version-history":[{"count":0,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts\/65119\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/media\/65120"}],"wp:attachment":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/media?parent=65119"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/categories?post=65119"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/tags?post=65119"},{"taxonomy":"miestas","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/miestas?post=65119"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}