Ntambama entwasahlobo eminyakeni eyizinkulungwane edlule, izilwane ezimbili ezivelele zazihamba emazweni aseJalisco, eyodwa ngobukhulu bayo, i-gonfoterio; enye, ngenxa yokuma kwama-canine ayo, izinyo le-saber. Zombili ziyaziwa ngenxa yokwakhiwa kabusha kwesayensi kwemivubukulo yazo, okusivumele ukuthi sazi i-morphology yabo.
Ama-dinosaurs awatholakali emazweni aseJalisco, kepha lokho kutholwa akunqatshelwe. Ngakolunye uhlangothi, kule ngxenye yezwe, ebonakala ngenhlabathi yayo yentaba-mlilo futhi embozwe ngamanzi izinkulungwane zeminyaka, izinsalela zezilwane ezincelisayo zigcwele.
Unjiniyela uFederico A. Solórzano, onikele ngempilo yakhe ekucwaningweni kwezinsalela, uvakashele leli bhizinisi, okokuqala njenge-amateur, emva kwalokho waba ngumfundi, kwathi kamuva waba ngumcwaningi nothisha ukuthola izinsalela ze-paleobiota zale ndawo esentshonalanga yeMexico. Eqiniseka ukuthi ulwazi alusetshenziswanga ukugcinwa, kepha ukuze lwabiwe, umcwaningi ovelele waseMexico wanikeza inhlokodolobha yaseJalisco ukugcinwa kwezingcezu eziqoqiwe ukuze zifundwe futhi ziboniswe. Ingxenye encane kuphela yaleli qoqo eboniswa eGuadalajara Museum of Paleontology, njengoba konke okunye kusacutshungulwa ngochwepheshe futhi kulindwe ukunwetshwa kwesiza esizokhonjiswa emphakathini.
Ubuhlobo nendlovu
Ukwehla kwezinga lamanzi eLake Chapala kwembula, ngo-Ephreli 2000, amathambo esilwane esikhulu futhi esimangazayo: uhlobo lwe-gomphoteric, tropical noma tropical of mammoth.
Isambulo sibalulekile ngoba isikhathi esiningi kutholakala ithambo elilodwa noma elinye, kuyilapho kulowo mcimbi kutholakale cishe u-90% wamathambo. Ngokushesha yasuswa endaweni ukuze ibuyekezwe, futhi ngemuva kwenqubo ehamba kancane, abacwaningi bayihlanganisa futhi namuhla ingesinye sezikhala eziyinhloko zalesi sigcinamagugu eGuadalajara. Ngokuya ngezicucu kungenzeka ukuthi unqume ukuthi kwakungowesilisa, iminyaka yakhe yayingaphezu kweminyaka engama-50.
Lesi silwane esikhulu sasihlala eNyakatho Melika ngezikhathi ze-Tertiary and Quaternary. Kulinganiselwa ukuthi ingaba nesisindo esingamathani amane. Ukuvikela kwayo okuphezulu okungenhla - iqonde futhi ngaphandle kwebhande loqweqwe lwawo - kuthathwa ngephutha njengamazinyo; Zenzeka ku-maxilla futhi kwesinye isikhathi ku-mandible. Ukwakhiwa kwe-gonfoterium cranial kwakukude kufana nokwendlovu zanamuhla. Isikhathi sayo sempilo saziwa ngokufana kakhulu nesabantu futhi singahlala eminyakeni engama-70 ngokwesilinganiso. Kwakuyimithi edla imifino eyayinemikhono esebenza kahle yokusika nokuchoboza amagatsha, amaqabunga neziqu.
I-feline eyodwa
Ngo-2006 kwafika umhlali omusha kulo mnyuziyamu, ukukhiqizwa kwehlosi lezinyo le-saber. Kuyaziwa ukuthi le nsikazi enkulu yayijwayele ukuhlala endaweni yeZacoalco, eJalisco. Empeleni yayihlala kulo lonke izwekazi ngesikhathi sePleistocene.
Abamele bokuqala bohlobo lo baqala eminyakeni eyizigidi ezi-2,5 kanti abokugcina babekhona eminyakeni eyizi-10 000 eyedlule; ekupheleni kwesikhathi sokugcina seqhwa. Amazinyo ayo e-canine (agobile futhi aboniswe phambili) awazange asetshenziselwe ukubulala isisulu, kepha ukusika esiswini futhi akwazi ukudla i-viscera yaso. Izinga lokuvula lomhlathi wabo kwakungu-90 no-95 degrees, kanti lelo lamakati amanje aphakathi kuka-65 no-70 degrees. Yayinesisindo esingaba ngama-400 kilograms futhi ngenxa yobukhulu bayo yayisincane kancane kunezingonyama zanamuhla. Inentamo eqinile, iqine emuva futhi incane, ibinemilenze emifushane ngokuqhathaniswa, ngakho-ke kubhekwa ukuthi ibingakulungele ukuphishekelwa, kepha inekhono lokuqamekela.
Kwakunezinhlobo ezintathu zehlosi elinezinyosi ezinama-saber: iSmilodon gracilis, eyayihlala ezifundeni zase-United States; ISmilodon populator, eNingizimu Melika, kanye noSmilodon fatalis, ababehlala entshonalanga neMelika. Ukukhiqizwa okungabonakala manje eGuadalajara kungokwakamuva.
Ngaphezu kwalokho, le nyuziyamu inezinye izinto ezihehayo zemfundo ezinjengemihlangano yokusebenzela kanye nohambo oluqondiswayo ukuqonda imvelo eyayikhona ezigidini zeminyaka eyedlule kule ngxenye yezwe.
Umthombo: IMexico engaziwa No. 369 / Novemba 2007.
