{"id":718221,"date":"2026-10-14T21:26:07","date_gmt":"2026-10-14T21:26:07","guid":{"rendered":"https:\/\/microscopemedia.com\/?p=718221"},"modified":"2026-10-14T21:26:07","modified_gmt":"2026-10-14T21:26:07","slug":"fosila-unei-pasari-frankenstein-i-a-lasat-pe-oamenii-de-stiinta-complet-uluiti-a-trait-acum-150-de-milioane-de-ani-si-este-una-dintre-cele-mai-vechi-pasari-cunoscute","status":"publish","type":"post","link":"https:\/\/microscopemedia.com\/?p=718221","title":{"rendered":"Fosila unei p\u0103s\u0103ri \u201eFrankenstein\u201d i-a l\u0103sat pe oamenii de \u0219tiin\u021b\u0103 complet ului\u021bi. A tr\u0103it acum 150 de milioane de ani \u0219i este una dintre cele mai vechi p\u0103s\u0103ri cunoscute"},"content":{"rendered":"
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Pas\u0103rea avea aripi surprinz\u0103tor de mici, ceea ce indic\u0103 faptul c\u0103 era mai potrivit\u0103 pentru alergare dec\u00e2t pentru zbor.<\/p>\n

Fosila descoperit\u0103 ofer\u0103 informa\u021bii complexe despre evolu\u021bia p\u0103s\u0103rilor<\/h2>\n

Fosila recent descoperit\u0103 ofer\u0103 o imagine considerabil mai complex\u0103 a evolu\u021biei timpurii a p\u0103s\u0103rilor, noteaz\u0103 The Independent<\/a>.<\/p>\n

Dat\u00e2nd din perioada jurasic\u0103, noua specie a fost numit\u0103 Yuezhuornis yangyuanensis \u0219i se afl\u0103 al\u0103turi de celebrul Archaeopteryx din Europa.<\/p>\n

\u201eYuezhuornis contest\u0103 paradigma tradi\u021bional\u0103 conform c\u0103reia planul corporal al p\u0103s\u0103rilor a evoluat aproape exclusiv sub presiunile selective ale zborului\u201d, a declarat paleontologul Min Wang.<\/p>\n

\u201eAceast\u0103 nou\u0103 fosil\u0103 schimb\u0103 doar presupunerea noastr\u0103 despre cum arat\u0103 o pas\u0103re jurasic\u0103\u201d, a spus Wang.<\/p>\n

Specimenul a fost descoperit \u00een provincia Fujian, situat\u0103 \u00een sud-estul Chinei.<\/p>\n

P\u0103s\u0103rile au evoluat \u00een timpul Jurasicului din <\/span>dinozauri<\/span> mici cu pene, dar lipsesc fosile care s\u0103 arate cu precizie c\u00e2nd s-a \u00eent\u00e2mplat acest lucru \u0219i cum s-a dezvoltat. Archaeopteryx a fost mult timp considerat cea mai veche pas\u0103re cunoscut\u0103, dar un num\u0103r mic de alte p\u0103s\u0103ri de v\u00e2rst\u0103 similar\u0103, precum Yuezhuornis, au fost descoperite abia acum.<\/span><\/p>\n

Pas\u0103rea, un amalgam de tr\u0103s\u0103turi similare at\u00e2t p\u0103s\u0103rilor c\u00e2t \u0219i dinozaurilor<\/h2>\n

Pas\u0103rea \u201eFrankenstein\u201d, care c\u00e2nt\u0103rea aproximativ 800 de grame, prezenta un mozaic de tr\u0103s\u0103turi anatomice care combinau caracteristici a p\u0103s\u0103rilor cu cele ale dinozaurilor.<\/p>\n

Membrele sale anterioare erau aripi complet dezvoltate, de\u0219i erau prea mici \u00een compara\u021bie cu restul corpului pentru a-i permite s\u0103 zboae. De asemenea, avea oasele craniene sub\u021biri ale unei p\u0103s\u0103ri \u0219i un pelvis asem\u0103n\u0103tor unei p\u0103s\u0103ri.<\/p>\n

Pe de alt\u0103 parte, Yuezhuornis avea o ghear\u0103 \u00een form\u0103 de secer\u0103 pe al doilea deget flexibil, similar\u0103 cu cea a dinozaurilor carnivori precum Deinonychus, Velociraptor \u0219i Troodon. Aceasta e o arm\u0103 periculoas\u0103 util\u0103 pentru un v\u00e2n\u0103tor terestru.<\/p>\n

De fapt, a spus Wang, Yuezhuornis ar fi putut concura pentru prad\u0103 cu dinozauri mici, care nu erau p\u0103s\u0103ri.<\/p>\n

Avea din\u021bi relativ mari, dens \u00eempreuna\u021bi \u0219i zim\u021ba\u021bi care \u00eei c\u0103ptu\u0219eau maxilarele, prezen\u021bi de obicei la anumi\u021bi dinozauri carnivori, dar nu \u0219i la p\u0103s\u0103ri. \u00cen plus, avea o coad\u0103 lung\u0103 \u0219i osoas\u0103, specific\u0103 dinozaurului, similar\u0103 cu cele pe care le aveau cele mai vechi p\u0103s\u0103ri cunoscute.<\/p>\n

Wang a spus c\u0103 nu se a\u0219tepta s\u0103 vad\u0103 o specie at\u00e2t de apropiat\u0103 de originile evolutive ale p\u0103s\u0103rilor, care pare s\u0103 fi avut o capacitate limitat\u0103 sau poate deloc de a zbura.<\/p>\n

\u201eNe surprinde\u201d, a spus el, potrivit sursei citate.<\/p>\n

\u201eO pas\u0103re ciudat\u0103\u201d<\/h2>\n

Paleontologul Steve Brusatte a spus c\u0103 \u201eeste o pas\u0103re ciudat\u0103. Scheletul ei arat\u0103 ca un amestec de monstru Frankenstein\u201d.<\/p>\n

\u201eEste evident o specie nou\u0103 important\u0103, deoarece arat\u0103 c\u0103 p\u0103s\u0103rile timpurii<\/a> \u0219i rudele lor cele mai apropiate erau mai diverse \u0219i mai variabile \u00een ceea ce prive\u0219te tr\u0103s\u0103turile anatomice \u0219i planurile corporale. Dar sugereaz\u0103 \u0219i c\u0103 unele dintre primele p\u0103s\u0103ri nu erau deosebit de bune la zbor, poate chiar c\u0103 unele dintre ele au evoluat din str\u0103mo\u0219i zbur\u0103tori, dar s-au \u00eentors la via\u021ba pe p\u0103m\u00e2nt, rareori, dac\u0103 nu vreodat\u0103, zbur\u00e2nd\u201d, a ad\u0103ugat Brusatte.<\/p>\n","protected":false},"excerpt":{"rendered":"

Pas\u0103rea avea aripi surprinz\u0103tor de mici, ceea ce indic\u0103 faptul c\u0103 era mai potrivit\u0103 pentru alergare dec\u00e2t pentru zbor. Fosila descoperit\u0103 ofer\u0103 informa\u021bii complexe despre evolu\u021bia p\u0103s\u0103rilor Fosila recent descoperit\u0103 … Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":718222,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"Default","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/718221"}],"collection":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=718221"}],"version-history":[{"count":0,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/718221\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/media\/718222"}],"wp:attachment":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=718221"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=718221"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=718221"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}