Whakarāpopototia te tuhinga:  Kua kitea he kōpiro 'tata ki te ma'ama'a' 600 miriona tau te pakeke i te tonga o Haina. E whakapono ana ngā kaipūtaiao ko te pīrangi <unk> e tohu ana i te kararehe tino taketake i runga i te Ao - ko te mea tawhito rawa atu i kitea. Ko tāna kitenga e whakaheke ana i te tīmatanga o te kunenga o ngā kararehe pūtau maha ki mua i te pakarutanga Cambrian 541 miriona tau ki muri. Kua kitea he kōpiro'tata ki te ma'ama'a'600 miriona tau te pakeke i te tonga o Haina.E whakapono ana ngā kaipūtaiao ko te kōpiro <unk> e tohu ana i te mea tino taketake i runga i te whenua - ko te mea tawhito rawa atu i kitea. Ko te Puta Cambrian, tata ki te 541 miriona tau ki muri, he momo momo kararehe i pakaru ki runga i te tirohanga whanaketanga. I mua i te 580 miriona tau ki muri, he māmā te nuinga o ngā rauropi, he pūtau takitahi i whakaritea i ētahi wā ki roto i ngā koroni. I roto i ngā tau e 70 ki te 80 miriona tau e whai ake nei, ka tere ake te tere o te kunenga, ā, ka tīmata te rerekētanga o te ora ki te āhua o tēnei rā. I mutu i te whakangaromanga Cambrian-Ordovician, tata ki te 488 miriona tau ki muri. Ko te kitenga hou nei e whakaheke ana i te rā o te kunenga o ngā kararehe pūtau maha ki te 60 miriona tau i mua i te tīmatanga o te pahūtanga Cambrian. Ko ngā pūngāwerewere, e mōhiotia ana hoki ko Porifera, he rauropi pūtau maha e hipoki ana i te tinana ki ngā kōhao me ngā awa e tuku ana i te wai kia rere i roto i a rātou. Me whakapumautia e ngā kaipūtaiao te wā i puta tuatahi mai ai rātau ki te Ao. Ko ngā tatauranga mai i te 700 miriona tau ki mua ki tētahi wā e mōhiotia ana ko te wā Cambrian, i puta i te 541 miriona ki te 485 miriona tau ki mua. Ko te kitenga whakamutunga ka whakatakoto i te hupa i te 60 miriona tau i mua i te tīmatanga o te Cambrian. E hiahia ana ngā kairangahau ki te whakapūmau i te rā, nā te mea e whakapono ana rātau he mea nui ki te mārama ki te whanaketanga o ngā kararehe o mua. Ko te wehenga i waenganui i ngā pīpī me te nuinga o ētahi atu kararehe he kaupapa nui i roto i te hītori o mua o te ora i runga i tō tātou aorangi. E ai ki nga kairangahau o te Nanjing Institute of Geology and Palaeontology, he iti ake i te kotahi milimita te teitei me te whanui o te peihana, i kitea i roto i te Doushantuo Formation. Hei titiro pai, i whakamahia e ngā pūtaiao...
I kitea te pīpī i roto i te Whakaputanga o Doushantuo i te tonga o Haina. E tohu ana i te whanaketanga pūtau maha i mua i te pakarutanga o te Cambrian. E whakapono ana kua tīmata te pahūtanga Cambrian i te 541 miriona tau ki muri. Ko te pahū e pā ana ki te wā i puta wawe mai ai ngā mea hanga matatini.