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Hynerpeton / / h aɪ ˈnɜːr pətɒn / lit.lit. Dabbobin ) wani bacewa ne na farkon kashin baya mai kafa hudu wanda ya rayu a cikin koguna da tafkunan Pennsylvania a lokacin Late Devonian, kusan shekaru miliyan 365, zuwa 363, da suka gabata. Abin sani kawai nau'in Hynerpeton shine H. bassetti, mai suna bayan kakan mai kwatanta, mai tsara birni Edward Bassett . An san Hynerpeton da kasancewa na farko na Devonian kashin baya mai kafa huɗu da aka gano a Amurka, da kuma yuwuwar kasancewa ɗaya daga cikin na farko da suka yi hasara na ciki (kamar kifi) .
An san wannan nau'in daga 'yan ragowar da aka gano a rukunin burbushin Red Hill a Hyner, Pennsylvania . Mafi shahararren burbushin halittu shine babban ginshikin kafada na endochondral wanda ya ƙunshi cleithrum, scapula, da coracoid (amma ba interclavicle da clavicles ), duk an haɗa su zuwa kashi ɗaya na kafada. saman ciki na wannan ƙashin kafada yana da tarin baƙin ciki da aka yi imani da cewa sun kasance abubuwan da aka makala don keɓaɓɓen saitin tsoka mai ƙarfi a kusa da ƙirji. Wannan na iya ba Hynerpeton ingantacciyar motsi da iya ɗaukar nauyi idan aka kwatanta da sauran ɓangarorin kashin baya na Devonian kamar Ichthyostega da Acanthostega . Cleithrum (babban ruwan kafada) an haɗa shi zuwa scapulocoracoid (ƙananan farantin kafada, a gaban soket ɗin kafada), sabanin yawancin tetrapods. Sabanin haka, abin wuyan kafada ya kasance mai zaman kansa daga kwanyar, sabanin yawancin kifi.
Ana kiran kashin bayan kafa huɗu na farko a matsayin tetrapods, bisa ga ma'anar ma'anar kalmar kamar yadda yawancin masana burbushin halittu ke amfani da su. Dabbobin Devonian kamar Hynerpeton, Ichthyostega, da Acanthostega an cire su daga rukunin kambin Tetrapoda, tunda sun samo asali ne tun kafin kakannin kakannin amphibians na zamani ( Lissamphibia ), dabbobi masu rarrafe, dabbobi masu shayarwa, da tsuntsaye . Ga kwararrun da suka gwammace ma'anar tetrapods na neontological (watau kawai a cikin mahallin rayuwar zamani), madadin sharuɗɗan tetrapods waɗanda ba kambi ba sun haɗa da " stem-tetrapod " ko " stegocephalian ".
Hynerpeton ya fito ne daga burbushin burbushin Red Hill, wanda, a lokacin Late Devonian, ya kasance filin ambaliyar ruwa mai ɗumi wanda ke tattare da yanayin yanayin kifin ruwa da kuma invertebrates na ƙasa. Hynerpeton yana daya daga cikin nau'ikan kasusuwa masu kafa hudu da aka sani daga wurin, ko da yake shi ne farkon da aka gano. Wasu masana burbushin halittu sun ba da shawarar cewa dabbobi kamar Hynerpeton sun yi amfani da salon rayuwarsu mai ban sha'awa don nemo wuraren tafkuna masu zurfi inda za su iya haifuwa, keɓe daga kifaye masu kifin da ke zaune a cikin koguna masu zurfi.