Ongororo ichangobva kuburitswa yakavakirwa pawongororo yematombo ane makore 518-miriyoni-ekare uye ane muunganidzwa wekare wezvisaririra izvo masayendisiti anazvo pari zvino. Maererano nekudzidza, madzitateguru ezvisikwa zvakawanda zviri kurarama nhasi angave akararama makore anopfuura mamiriyoni 500 apfuura muChina yemazuva ano.
MuYunnan, kumaodzanyemba kwakadziva kumadokero kweChina, masayendisiti akawana rimwe remapoka ekare ezvisaririra zvemhuka zvino anozivikanwa nesainzi, ane zvisaririra zvemarudzi anopfuura mazana maviri nemakumi mashanu.
Icho chinyorwa chakakosha che Cambrian Kuputika, iyo yakaona kukurumidza kupararira kwemarudzi maviri - zvisikwa izvo, semhuka dzemazuva ano uye vanhu, vane symmetry se "embryos", zvinoreva kuti vaiva neruboshwe uye rworudyi iyo mifananidzo yegirazi yeumwe neumwe.
Zvisaririra zvakawanikwa paChengjiang Biota ine makore 518 miriyoni ekuberekwa zvinosanganisira makonye, arthropods (madzitateguru eshiri mhenyu, tumbuyu, dandemutande, uye zvinyavada), uye kunyangwe mhuka dzepakutanga (madziteteguru ehove, amphibians, zvinokambaira, shiri nemhuka dzinoyamwisa). . Zvakawanikwa muongororo ichangoburwa zvakaratidza kekutanga kuti nharaunda iyi yaive nzvimbo isina kudzika yegungwa yaive yakapfuma mukudya uye yakakanganiswa nemafashama emvura.
Kunyangwe nzvimbo iyi parizvino iri panyika mudunhu rine makomo reYunnan, timu yakaongorora masampuri ematombo akaburitsa humbowo hwemvura yemugungwa munharaunda yaivepo kare.
"Kuputika kweCambrian ikozvino kwave kugamuchirwa pasi rose sechiitiko chechokwadi chekushanduka-shanduka, asi zvikonzero zvechiitiko ichi zvakagara zvichinetsana, nekufungidzira pamusoro pezvakatipoteredza, genetic, kana ecological zvinokonzera," akadaro munyori mukuru Dr. Xiaoya Ma, palaeobiologist paYunivhesiti yeExeter uye Yunnan University.
"Kuwanikidzwa kwenzvimbo ine mvura ine mvura kunopa chiedza chitsva pakunzwisisa zvinogona kukonzera zvikonzero zvekubudirira kwenzvimbo idzi dzemugungwa dzinotongwa nemhuka dzeCambrian uye kuchengetedzwa kwadzo kwakapfava."
"Kusagadzikana kwezvinonetsa kwezvakatipoteredza kunogona kubatsirawo mukupisa kwemwaranzi yemhuka dzekutanga idzi."
Mumwe munyori anotungamira Farid Saleh, anobva kuYunnan University, akati: "Tinogona kuona kubva mukubatanidzwa kweakawanda sedimentary inoyerera kuti nharaunda inotambira Chengjiang Biota yakanga yakaoma uye isina kudzika pane zvakambotaurwa mumabhuku enharaunda dzemhuka dzakafanana."
Changshi Qi, mumwe munyori anotungamira uye geochemist paYunnan University, akawedzera: Tsvagiridzo yedu inoratidza kuti Chengjiang Biota yainyanya kugara munzvimbo ine mweya isina kudzika-yemvura inoyerera.
"Mafashamo emvura akaendesa zvipenyu izvi kunzvimbo yakadzika-yakadzika isina oxygen, zvichiita kuti tichengetedzwe zvinoshamisa nhasi."
Co-munyori Luis Buatois, paleontologist uye sedimentologist paYunivhesiti yeSaskatchewan, akati: "Chengjiang Biota, sezvakaita mhuka dzakafanana dzinotsanangurwa kune dzimwe nzvimbo, dzakachengetwa munzvimbo dzakacheneswa."
“Manzwisisiro atinoita kuti madhaka aya akaiswa sei akachinja zvikuru mumakore 15 apfuura.”
"Kushandiswa kweruzivo urwu ruchangobva kuwanikwa pakudzidza kwefossiliferous deposits yekuchengetedzwa kwakasarudzika kuchachinja zvakanyanya manzwisisiro atinoita kuti marara aya akaunganidzwa sei uye kupi."
Zvakawanikwa pakutsvagurudza zvakakosha nekuti zvinoratidza kuti ruzhinji rwemarudzi ekutanga akakwanisa kuenderana nemamiriro ezvinhu akaoma sekuchinja kwemunyu uye mavhoriyamu makuru ekuisa mavhu.
Izvi zvinopesana nezvakawanikwa muzvidzidzo zvekare, izvo zvakaratidza kuti mhuka dzine maitiro akafanana dzakatora mvura yakadzika uye nzvimbo dzegungwa nekugadzikana kukuru.
"Zvakaoma kudavira kuti mhuka idzi dzakakwanisa kurarama nemamiriro ezvinhu anonetsa akadaro," akadaro M. Gabriela Mángano, nyanzvi ye<em>paleontologist paYunivhesiti yeSaskatchewan, uyo akadzidza dzimwe nzvimbo dzinozivikanwa zvikuru dzekuchengetedzwa kunoshamisa muCanada, Morocco, uye Greenland.
Maximiliano Paz, mumwe wepashure pedoctoral paYunivhesiti yeSaskatchewan anonyanya kuita zvakanaka-grained system, akawedzera: "Kuwana madhamu macores kwakatibvumira kuona zvakadzama mudombo izvo zvinowanzonetsa kuonga munzvimbo dzakaoma dzenharaunda yeChengjiang."
Bepa, rakabudiswa mujenari Nature Communications, rine musoro unoti: "Chengjiang Biota yaigara munzvimbo ine deltaic"
