Chisungo pakati pevanhu nembwa chinodzokera shure kwezviuru zvemakore. Vanhu pavakatanga kutamira kuNorth America, vakauya nembwa dzavo. Idzi imbwa dzinopfuyiwa dzaishandiswa pakuvhima uye dzaipa ushamwari hunokosha kuvatenzi vadzo. Asi kare kare mhuka idzi dzisati dzasvika kuno, kwaiva nemhuka dzinodya dzakaita sembwa dzaivhima masango nemasango eAmerica.
Rakada kushomeka uye rinenge rakazara skeleton yeimwe yeidzi mhuka dzakatsakatika kwenguva refu yakawanikwa nePaleontologists kubva kuSan Diego Natural History Museum. Yakawanikwa mumasara maviri makuru ejecha nematombo akafukunurwa muna 2019 panguva yebasa rekuvaka muSan Diego County's Otay Ranch nharaunda.
Iyi fossil inobva kuboka remhuka dzinozivikanwa seArcheocyons, iyo inoshandura se "imbwa yekare." Zvisaririra zvakabva kumagumo eOligocene epoch uye zvinotendwa kuva makore 24 miriyoni kusvika 28 miriyoni.
Kuwana kwavo kwave kuri makomborero kumasayendisiti kuSan Diego Museum of Natural History, kusanganisira paleontology curator Tom Deméré, post-doctoral muongorori Ashley Poust, uye curatorial mubatsiri Amanda Linn.
Nekuda kwekuti zvisaririra zvemu museum zvazvino hazvina kukwana uye zvishoma muhuwandu, iyo Archeocyons fossil ichabatsira timu yepaleo mukuzadza mapeji pane zvavanoziva nezve zvisikwa zvekare zvembwa zvaigara mune yave kunzi San Diego makumi emamiriyoni emakore apfuura. .
Vafamba nezvigunwe zvavo sembwa mazuvano here? Vaigara mumiti kana kuchera muvhu here? Dzaidyei, uye zvisikwa zvipi zvakadzidya? Ukama hwavo hwakanga huri hwei nemarudzi akatsakatika akaita sembwa akauya pamberi pavo? Iyi imhando itsva zvachose isati yawanikwa here? Ichi chicherwa chinopa SDNHM vaongorori nezvimwe zvimedu zvekuwedzera zvepuzzle isina kukwana.
Archeocyons fossils yakawanikwa muPacific Northwest uye Great Plains, asi inenge isati yamboitika muSouthern California, uko glaciers uye plate tectonics yakapararira, yakaparadza, uye yakaviga zvisaririra zvakawanda kubva panguva iyoyo yakadzika pasi pevhu. Chikonzero chikuru ichi Archeocyons fossil yakawanikwa uye yakatumirwa kumuseum mutemo weCalifornia unorayira paleontologists kuti vavepo panzvimbo huru dzekuvaka kuti vawane nekuchengetedza zvinogona kuitika zvekutsvaga mune ramangwana.
Pat Sena, mucherechedzo wepaleo weSan Diego Natural History Museum, aiongorora matombo ane matombo ari muchirongwa cheOtay makore matatu apfuura paakaona zvaiita sezvimedu zvichena zvebhonzo zvichibuda padombo rakacherwa. Akadhirowa mucherechedzo weSharpie mutema pamatombo uye akaita kuti vatamisirwe kumuseum, uko kudzidza kwesainzi kwakamiswa kweanoda kusvika makore maviri nekuda kwedenda.
Musi waZvita 2, 2021, Linn akatanga kushanda pamatombo makuru maviri aya, achishandisa maturusi madiki ekuveza nekucheka nemabhurashi kuti zvishoma nezvishoma abvise matombo ematombo.
"Pese pandaifukunura bhonzo idzva, mufananidzo wacho waiwedzera kujeka," Linn akadaro. “Ndaiti, ‘Honai, apa ndipo panopindirana chikamu ichi nebhonzo iri, apa ndipo panotangira musana kusvika kumakumbo, apa ndipo pane mbabvu dzese.
Maererano naAshley Poust kamwe chete cheekbone uye mazino efossil akabuda kubva padombo, zvakava pachena kuti yaive yekare canid mhando.
Muna Kurume 2022, Poust aive mumwe wevatatu vepasirese paleontologist vakazivisa kuwana kwavo mhuka nyowani ine mazino yakaita sekatsi, Diegoaelurus, kubva kuEocene epoch.
Asi uko katsi dzekare dzaingova nemazino anobvambura nyama chete, zvihwitsi zvemumnivorous zvaiva nemazino ose ekucheka mberi kuti auraye uye adye mhuka duku uye mazino akatsetseka semolar kuseri kwemiromo yawo aishandiswa kupwanya zvirimwa, mhodzi nemabheri. Uyu musanganiswa wemazino uye chimiro chedehenya rayo zvakabatsira Deméré kuona fossil seArcheocyons.
Iyo fossil inokwana zvachose kunze kwechikamu chemuswe wayo wakareba. Mamwe mapfupa ayo akazununguka pamusoro, zvichida semugumisiro wekufamba kwepasi mushure mokunge mhuka yafa, asi dehenya rayo, mazino, musana, makumbo, zvigunwe zvemakumbo uye zvigunwe zvakakwana, zvichipa hupfumi hwemashoko pamusoro pekushanduka kweArcheocyons.
Kureba kwemapfupa echitsitsinho chefossil kwaangadai akabatana neAchilles tendons anoratidza kuti maArcheocyons akange ajaira kudzingirira mhuka dzayo madaro marefu munzvimbo dzakashama. Zvinotendwawo kuti muswe wayo wakasimba, une tsandanyama unogona kunge wakashandiswa pakuenzanisa uchimhanya uye uchichinja. Pane zvakare zviratidzo kubva mutsoka dzayo kuti pamwe yaigona kugara kana kukwira mumiti.
Panyama, maArcheocyons aive saizi yegrey fox yanhasi, ine makumbo marefu uye musoro mudiki. Yaifamba nezvigunwe zvayo uye yakanga iine nzwara dzisingadzokeriki. Muviri waro wakaita segava wakasiyana chaizvo nerudzi rwakatsakatika rwunozivikanwa seHesperocyons, dzaive diki, refu, dziine makumbo mapfupi uye dzakafanana nedzemazuva ano.
Nepo Archeocyons fossil ichiri kudzidzwa uye isiri kuratidzwa pachena, museum ine chiratidziro chikuru pauriri hwayo hwekutanga nemafossils uye yakakura mural inomiririra zvisikwa zvaigara munharaunda yeSan Diego yemahombekombe munguva dzekare.
Ashley Poust akaenderera mberi achiti chimwe chezvisikwa zviri mumufananidzo wemuimbi William Stout, chisikwa chakaita segava chakamira pamusoro petsuro ichangobva kuurayiwa, chakafanana neizvo maArcheocyons angadai akaita.
