<prompt> Pfupisa nyaya yacho: Siponji inenge isina kushatiswa ine makore mamiriyoni 600 yakawanikwa kumaodzanyemba kweChina. Masayendisiti anodavira kuti siponji - iyo inomirira mhuka yokutanga zvikurusa paPasi - ndiyo yakarebesa yati yambowanwa. Kuwanikwa kwaro kunodzosa shure kuvamba kwokushanduka-shanduka kwemhuka dzine masero akawanda kusvikira pamberi pokuputika kweCambrian makore ane mamiriyoni 541 apfuura. Chimwe chipanji chine makore 600 miriyonichisina kumbobvira chashandurwachakawanikwa kumaodzanyemba kweChina.Masayendisiti anotenda kuti chipanji ichi chinomiririra chisikwa chisina kumbobvira chavapo panyika - ndicho chakarebesa pane zvose zvati zvambowanikwa. Kuputika kweCambrian, makore anenge mamiriyoni 541 akapfuura, kwakanga kuri kupararira kwemhuka dzakasiyana-siyana mumamiriro ezvinhu okushanduka-shanduka. Makore anenge mamiriyoni 580 akapfuura, zvisikwa zvipenyu zvakawanda zvakanga zviri nyore, zvaiva nemasero ega ega uye dzimwe nguva zvaiungana mumapoka. Mumakore 70 kana kuti 80 mamiriyoni akatevera, mwero wokushanduka-shanduka wakakurumidza uye kusiyana-siyana kwezvinhu zvipenyu kwakatanga kufanana nezvatinoona nhasi. Yakaguma nechiitiko chokutsakatika kweCambrian-Ordovician, anenge makore 488 miriyoni akapfuura. Kuwana kwazvino uno kunodzosera shure musi wokushanduka-shanduka kwemhuka dzine masero akawanda kusvika kumamiriyoni 60 amakore Cambrian explosion isati yatanga. Masponge, anozivikanwawo sePorifera, zvipenyu zvine masero akawanda zvine miviri yakafukidzwa nemakomba uye migero inobvumira mvura kutenderera mairi. Masayendisiti achiri kufanira kusimbisa apo dzakatanga kuoneka papasi. Kufungidzira kunovambira pamakore ane mamiriyoni 700 akapfuura kusvikira kunguva inozivikanwa seCambrian, iyo yakaitika mamiriyoni 541 kusvika kumamiriyoni 485 akapfuura. Kuwana kwazvino uno kwaizoisa chipanji chacho makore anenge mamiriyoni 60 Cambrian isati yatanga. Vatsvakurudzi vanoda kunyatsoziva musi wacho nokuti vanodavira kuti ndiwo musimboti wokunzwisisa kushanduka-shanduka kwemhuka dzokutanga. Kuparadzaniswa kwezvipembenene nemamwe mhuka kwakava chiitiko chikuru munhau yokutanga youpenyu papasi redu. Svosve racho, rakawanikwa muDoushantuo Formation, rakareba uye rakafara mamirimita anopfuura 1 chete, maererano nevatsvakurudzi vanobva kuNanjing Institute of Geology and Palaeontology. Kuti vanyatsoona, masayendisiti akashandisa...  <response>: Sipo yacho yakawanikwa muDoushantuo Formation iri kumaodzanyemba kweChina. Zvinoratidza kuti kushanduka kwemasero akawanda kwakaitika Cambrian isati yaputika. Kuputika kweCambrian kunofungidzirwa kuti kwakavamba makore ane mamiriyoni 541 akapfuura. Kuputika kwacho kunoreva nguva apo zvisikwa zvakaoma kunzwisisa zvakaoneka nokukurumidza. 