Kammala jumla mai zuwa: John W. Dawson ya koma Joggins a lokacin rani na 1853 ba tare da Charles Lyell ba, wanda aka hayar da shi don aiki don
Bikin baje kolin duniya na 1853 a Birnin New York. Dawson ya ci gaba da bincika Jagorancin Joggins kadai, kuma a ranar 2 ga Nuwamba 1853 ya aika da binciken da ya kammala zuwa Lyell. Dawson ya yi iƙirarin cewa bincikensa da na Lyell sun yi daidai da waɗanda William Logan ya yi, kuma a shekara ta 1855 Dawson bai ƙara yin amfani da bincikensa ba kuma ya fara dogara ne kawai ga Logan don tunani. A cikin nazarin binciken su na 2005, an ƙaddara cewa aikin Dawson da Lyell ya fi daidai da na Logan. "Hylonomus lyelli" an gano shi a Joggins Cliffs ta Dawson kuma an bayyana shi a hukumance a shekara ta 1859. An ba shi suna don girmama abokin aikinsa, Charles Lyell, za a gane jinsin daga baya a matsayin mafi tsufa sanannun dabbobi masu rarrafe kuma an sanya shi burbushin lardin Nova Scotia. An gano burbushin burbushin da Dawson ya gano a 1866 a wani lokaci an yi imanin cewa an yi shi ne ta hanyar mafi girma da aka sani da "Arthropleura", amma Dawson ya sami hanyar da ta dace da za a sanya shi ga jinsin kansa: "Diplichnites aenigma". Dawson zai sadaukar da yawancin aikinsa don nazarin Tsarin Joggins kuma ya sake dawowa a 1877, yana gudanar da bincike wanda Royal Society ta ba da gudummawa don neman ƙarin samfuran da aka saka a cikin bishiyoyin burbushin halittu. An fashe abubuwa masu fashewa a Coal Mine Point, suna fallasa itatuwan lycopsid ashirin da biyar; daga cikin waɗannan, goma sha biyar sun ƙunshi burbushin halittu masu ƙwayoyin halittar da ke wakiltar sama da mutum ɗari, mafi girman tarin tetrapods na Palaeozoic da aka taɓa samu. Dawson da Lyell za su zo da ra'ayoyi da yawa a tsawon shekaru don bayyana dalilin da yasa dabbobi da yawa za su taru a can. Shawarar farko ita ce cewa halittun sun kasance suna yin ɓoye, amma an kuma ba da shawarar cewa sun mutu a wani wuri kuma ruwa ya wanke su a cikin akwatunan. Daga karshe, Dawson zai yi imani cewa dabbobin sun fada cikin akwatin kuma sun mutu a can, ba su iya tserewa ba.