<prompt> Qedela umusho olandelayo: UJohn W. Dawson wabuyela eJoggins ehlobo lika-1853 ngaphandle kukaCharles Lyell, owayekade eqashwe ukuba asebenzele  <response>: Umbukiso Womhlaba Wonke ka-1853 eNew York City. UDowson waqhubeka nokuhlola iJoggins Formation eyedwa, kwathi ngo-November 2, 1853 wathumela ucwaningo lwakhe oluphothuliwe kuLyell. UDowson wathi lokho yena noLyell abakuthola kwakufana nalokho okwakwenziwe uWilliam Logan, futhi ngo-1855 uDowson wayeka ukusebenzisa inhlolovo yakhe futhi waqala ukuthembela kuLogan kuphela njengesethenjwa. Ekubuyekezweni okwenziwa ngo-2005 kokuhlola kwabo, kwatholakala ukuthi umsebenzi kaDawson noLyell wawunembe kakhulu kunoLogan. I-Hylonomus lyelli yatholakala eJoggins Cliffs nguDawson futhi yachazwa ngokusemthethweni ngo-1859. Eqanjwe ngenhlonipho yomngane wakhe, uCharles Lyell, kamuva lolu hlobo lwaluyobhekwa njengesidalwa esidlakela esidala kunazo zonke esaziwayo futhi lwenziwe lwaba yi-fossil yesifundazwe saseNova Scotia. I-trackway yezinsalela uDawson ayithola ngo-1866 ngesinye isikhathi yayikholelwa ukuthi yenziwe yi-invertebrate enkulu kunazo zonke eyaziwayo i-Arthropleura, kodwa uDawson wagcina ethole ukuthi umzila uhlukile ngokwanele ukuba unikezwe uhlobo lwawo: Diplichnites aenigma. UDowson wayezochitha ingxenye enkulu yomsebenzi wakhe etadisha iJoggins Formation futhi waphinde wabuyela ngo-1877, enza uhambo olwaluxhaswe yiRoyal Society ukuyofuna ezinye izibonelo ezifakwe ezihlahleni zamagugu. Kwaqhuma iziqhumane eCoal Mine Point, kwavezwa izihlahla ezingama-lycopsid ezingamashumi amabili nanhlanu; kulezi, eziyishumi nanhlanu zaziqukethe izinsalela zezilwane ezinomgogodla ezimelela izibonelo ezingaphezu kwekhulu, iqoqo elikhulu kunawo wonke le-tetrapods yePalaeozoic elake latholakala. Eminyakeni edlule, uDowson noLyell baveza imibono eminingi ukuze bachaze ukuthi kungani izilwane eziningi kangaka zazihlangana lapho. Umbono wokuqala wawuwukuthi lezi zidalwa zazilala, kodwa kwaphinde kwasikiselwa ukuthi zazifele kwenye indawo futhi zagcwala amanzi. Ekugcineni, uDawson wayeyokholelwa ukuthi lezi zilwane zaziwele esiqwini futhi zafela lapho, zingakwazi ukubaleka. 