Madzulo masana zaka zikwi zapitazo, nyama ziwiri zabwino zinali kuyenda m'maiko aku Jalisco, imodzi kukula kwake, gonfoterio; china, chifukwa cha mawonekedwe a mayini ake, mano a saber. Onsewa amadziwika chifukwa chakumanganso zasayansi zakale zawo, zomwe zatilola kudziwa morphology yawo.
Ma dinosaurs sanapezeke m'maiko a Jalisco, koma kupeza koteroko sikukanidwa. Kumbali inayi, m'chigawo chino cha dzikoli, chodziwika ndi nthaka yake yophulika komanso yokutidwa ndi madzi kwa zaka masauzande ambiri, zotsalira za zinyama zimachuluka.
Womangamanga Federico A. Solórzano, yemwe adapereka moyo wake kuphunzira za zakale, adayendera bungweli, poyamba ngati wosewera, kenako ngati wophunzira, ndipo kenako ngati wofufuza komanso mphunzitsi kuti apeze zotsalira za paleobiota kudera lakumadzulo kwa Mexico. Pokhulupirira kuti chidziwitsocho sichingasungidwe, koma kuti chigawidwe, wofufuza wotchuka waku Mexico adasunga zomwe zidatengedwa kulikulu la Jalisco kuti ziwerengedwe ndikuwonetsedwa. Chigawo chochepa chokha chawonetserachi chikuwonetsedwa ku Guadalajara Museum of Paleontology, popeza zotsalazo zikuwunikiridwa ndi akatswiri ndipo zikuyembekezera kukulitsa tsamba loti liwonetsedwe kwa anthu.
Ubale ndi njovu
Kuchepa kwamadzi mu Nyanja ya Chapala kudawulula, mu Epulo 2000, mafupa a nyama yayikulu komanso yodabwitsa: mtundu wa gomphoteric, tropical kapena subtropical wa mammoth.
Vumbulutsoli ndilofunikira chifukwa nthawi zambiri fupa limodzi kapena linzake limakhala, pomwe pamwambowu pafupifupi 90% ya mafupa amapezeka. Posakhalitsa adachotsedwa pamalopo kuti akaunikenso, ndipo atachita pang'onopang'ono, ofufuzawo adasonkhanitsanso ndipo lero ali m'gulu limodzi mwanyumba yayikulu iyi ku Guadalajara. Malingana ndi zidutswazo ndizotheka kudziwa kuti anali wamwamuna, yemwe zaka zake zinali zoposa zaka 50.
Nyama yayikuluyi idakhala ku North America munthawi ya Tertiary and Quaternary. Akuti mwina amatha kulemera matani anayi. Zida zake ziwiri zapamwamba - zowongoka komanso zopanda gulu la enamel - zimawonedwa molakwika ngati mano; Zimapezeka mu maxilla ndipo nthawi zina zimafunikira. Kapangidwe kakang'ono ka gonfoterio kanali kofanana ndi njovu zamakono. Nthawi yake yamoyo imadziwika kuti ndi yofanana kwambiri ndi ya anthu ndipo imatha kukhala mpaka zaka 70 pafupifupi. Anali herbivore yomwe inali ndi ma molars ogwira kudula ndi kuphwanya nthambi, masamba ndi zimayambira.
Amuna amodzi
Mu 2006 wokhalamo watsopano adabwera ku nyumba yosungiramo zinthu zakale, kubereka kwa kambuku ka mano a saber. Amadziwika kuti nyamayi yayikuluyi imakonda kupezeka ku Zacoalco, Jalisco. Amakhaladi kontrakitala yonse panthawi ya Pleistocene.
Oyimira oyamba amtunduwu adayamba zaka 2.5 miliyoni ndipo omaliza adakhalapo zaka 10,000 zapitazo; kumapeto kwa nyengo yachisanu yomaliza. Mano ake a canine (opindika ndikuwonekera kutsogolo) sanagwiritsidwe ntchito kupha nyamayo, koma kuti adule pamimba ndikutha kudya viscera yake. Kutsegula kwa nsagwada zawo kunali madigiri 90 ndi 95, pomwe amphaka apano amakhala pakati pa 65 ndi 70 degrees. Ankalemera pafupifupi makilogalamu 400 ndipo chifukwa cha kukula kwake anali ocheperako pang'ono kuposa mikango masiku ano. Ndili ndi khosi lolimba, lolimba kumbuyo ndi laling'ono, linali ndi miyendo yochepa, kotero akuti sichinali choyenera kuchita, koma waluso obisalira.
Panali mitundu itatu ya nyalugwe wa mano opha ndi sabata: Smilodon gracilis, yomwe inkakhala zigawo za United States; Smilodon populator, ku South America, ndi Smilodon fatalis, omwe amakhala kumadzulo kwa America. Kubala komwe kumatha kuwonedwa ku Guadalajara ndi kwawomaliza.
Kuphatikiza apo, nyumba yosungiramo zinthu zakaleyi ili ndi zokopa zina zamaphunziro monga zokambirana komanso maulendo owongoleredwa kuti mumvetsetse zachilengedwe zomwe zidalipo zaka mamiliyoni apitawa mderali.
Gwero: Unknown Mexico No. 369 / November 2007.
