U-Eogippus waphila emhlabeni eminyakeni engaba yizigidi ezingama-50 edlule. Kwakuyizidalwa ezincane (ezazingafani nje nekati ezifuywayo) ezazibukeka njengehhashi ngokubukeka. Kungokufana nehhashi lapho izilwane zathola igama lazo ngokwesayensi. Igama elithi "eogippus" liqukethe amaGrikhi amabili: "eos" ngokuhunyushelwa olimini lwesiRussia lisho "ukuntwela kokusa", kanye "nemvubu" - "ihhashi".

Ukuphakama kwe-eogippus lapho ibuna ngokwesilinganiso ayizange idlule ku-50 cm, futhi ukuphakama kwabantu abancane kakhulu kufinyelele ku-25 cm.

Izilwane zazinezinyawo eziqinile futhi zazikwazi ukugijima ngokushesha okukhulu. Iminwe enwebuzelwe kubanzi ibasize ukuba bahlale endaweni eshisayo yezixhaphozi. Ezinyaweni ezingaphambili zamahhashi amancane kwakukhona iminwe emihlanu, emine yayifakwe, njengokungathi iyingubo yezempi, ezinsikeni eziqinile. Umunwe wesihlanu wawungakhuli kahle futhi wawungaphezulu kwezinye. Emilenzeni ingemuva kwakukhona iminwe emithathu, yonke ivikelwe yizinselo.

Kunamazinyo angama-44 aqine emihlathini ye-eogippus, okwenza kube lula ukugaya ukudla okuqinile kwezitshalo. Umzimba wonke wesilwane wawumbozwe ngezinwele ezimfushane, ezilukhuni, ezazinombala onemibala noma obonakalayo. Kwakuwuhlobo lokufihlakala, okwenza ukuthi i-eogippus icashe otshanini ezitheni.

Idlozi elikude lamahhashi asendulo nawanamuhla, ngokusho kososayensi, ifenacodus air conditioner, eyayinezinyawo ezinemilenze emihlanu. Iminwe yakhe yokuqala neyesihlanu yayakhiwe kancane, imfushane, futhi yayimude kunabanye, kanti okujwayelekile, okuphambene nalokho, kwakukude.

I-Eogippus

Siyawazi womabili umlando ojwayelekile wokuthuthukiswa kokuphila eMhlabeni kanye nomlando wokuthuthuka kwamaqembu ngamanye nezinhlobo zezilwane. Kodwa-ke, izazi ze-paleontologists ziyaqhubeka nomsebenzi wazo ukucacisa imininingwane ethile yomlando wentuthuko, okuqinisekisa ukuqagelwa kwabo nokutholakele kobufakazi obengeziwe.

Isibonelo esikhulu sempumelelo ye-paleontology ukusungulwa komlando wokuthuthuka kwehhashi - lesi silwane esihle futhi umsizi omuhle kakhulu womuntu. Okhokho bamahhashi okuqala bavela eminyakeni engaba yizigidi ezingama-50 edlule eNyakatho Melika.

Uchungechunge lokuziphendukela kwemvelo lwalezi zilwane lwaqalwa nge-Eohippus - Orohippus - Epihippus - Miohippus - Parahippus - Merychippus - Pliohippus futhi lwaphela ngokuqala kwehhashi lanamuhla le-Equus.

Ukuvela kwalezi zilwane kuwubufakazi bobumbano bezilwane nemvelo, ubufakazi bokuthi ukuguquka ngakunye kwezimo zokuphila kubangele ushintsho oluningi ezilwaneni zezilwane, ngenxa yesidingo sokuzivumelanisa naalezi zimo ezintsha.

Ngakho-ke ekuqaleni amahhashi ayehlala ezindaweni ezinodaka, bese ethutha aye emaqeleni, lapho kwakukhona khona isimo sezulu esomile, futhi maqondana nalokhu kwaba noshintsho ekudleni kwezilwane: esikhundleni sezitshalo zamaxhaphozi ezithambile nezivumayo, ayephoqelelwa ukuba adle izitshalo ezomileyo ze-steppe.

Sizozama ukuchaza izilwane ezingezinye izixhumanisi zochungechunge lokuziphendukela kwemvelo olungenhla.

Idlozi lamahhashi aseNyakatho Melika ihhashi elincane elivela kuhlobo lwe-Eohippus, olwaluhlala emahlathini anodaka we-Eocene yakuqala. Ubukhulu bawo abudlulanga usayizi we-fox.

Ikhanda elincane lalihleli entanyeni emfishane, umugqa wawungcolile, futhi imilenze yayinde, eyangaphambili inamacici amahlanu, ingemuva inamakamelo amathathu. Ezibungeni zeminwe emihlanu, ezine zazinezinselo ezincane, kanti umunwe wesihlanu (isithupha) wawungakhiwa ngaphansi, awuzange uthinte umhlabathi omncane.

Emilenzeni asemuva, yonke iminwe emithathu yayinezinselo ezincane, iminwe emibili ye-uasis yayincishisiwe eside futhi yayingamathambo amabili amancane abekwe phezulu ngemuva komlenze. Isilwane sasingamazinyo angama-44, ama-molars ayemincane, enomqhele ophansi, okukhombisa ukuvumelana kwawo nokugaya ukudla kwezitshalo okuthambile nokunoshukela.

I-elbow ne-tibia, okuthe ekuthuthukisweni kwe-phylogenetic yehhashi kuncipha kakhulu, kuma-eogippus kwakusakhiwa.

Cishe ziyizinhlobo eziyishumi ezahlukahlukene ze-eogippus ezaziwayo, ezincane kunazo zonke zafinyelela amasentimitha angama-25 (inkomba ye-Eohippus) lapho zibuna, kanti enkulu kunazo zonke (i-Eohippus resartus) cishe ngamasentimitha angama-51.