Dinosaur blitz?

Imwe nzira yezvidzidzo zvepaleontological inogona kunzi "dinosaur blitz."
Iri izwi rakakweretwa kubva kune biologist vanoronga "bio-blitzes." Mune bio-blitz, vanozvipira vanoungana kuti vaunganidze yese biological sample inobvira kubva kune yakatarwa inogara munguva yakatsanangurwa yenguva. Semuenzaniso, bio-blitzers inogona kuronga pakupera kwevhiki kuunganidza sampuli dzeamphibians ese uye zvinokambaira zvinogona kuwanikwa mumupata wegomo.
Mune dino-blitz, pfungwa ndeyekuunganidza akawanda mafossils emhando imwe chete yedhinasosi kubva pamubhedha chaiwo wefossil kana kubva panguva yakatarwa sezvinobvira. Nekuunganidza sampuli yakakura yemhando imwe chete, paleontologists inogona kutarisa kuchinja kwemaatomical pamusoro pehupenyu hwemitezo yezvipenyu.

Mhedzisiro yeimwe dino-blitz, yakaziviswa muzhizha ra2010, yakavhiringidza nyika yevanovhima madhinosaur. Vakamutsawo gakava riri kutsviriridza nhasi.
Kwemakore anopfuura zana, paleontologists akanga atora maviri akasiyana branched pamuti we dinosaur wehupenyu: imwe yeTriceratops uye imwe yeTorosaurus. Kunyangwe paine misiyano pakati pezviviri izvi, vanogovana zvakawanda zvakafanana. Ose ari maviri aidya zvinomera. Vose vakararama panguva yeLate Cretaceous. Zvose zvakamera mabhonzo, senhovo, kuseri kwemisoro yavo.
Vatsvagiri vakashamisika kuti dino-blitz ingaratidze chii nezve zvisikwa zvakafanana.

Kwenguva yemakore gumi nzvimbo yakapfuma yeMontana inozivikanwa seHell Creek Formation yakacherwa Triceratops neTorosaurus mapfupa.
Makumi mana muzana emafossils akabva kuTriceratops. Mamwe madehenya aive akaenzana nebhora rekuAmerica. Dzimwe dzaive dzakakura tumotokari tudiki. Uye vose vakafa pamatanho akasiyana ehupenyu.
Kana iri iyo Torosaurus inoramba iripo, zvinhu zviviri zvakamira pachena: chekutanga, zvisaririra zveTorosaurus zvaive zvishoma, uye chechipiri, hapana matehenya eTorosaurus echidiki akawanikwa. Imwe neimwe yedehenya reTorosaurus raive dehenya revakuru. Nei zvakadaro? Sezvo nyanzvi dzenhoroondo dzekare dzaifungisisa mubvunzo wacho uye dzichiramba kuti zvimwe zvingangoitika pashure peimwe, vakasara vaine mhedziso imwe isinganzvengeki. Torosaurus yakanga isiri rudzi rwakasiyana rwedhinaso. Dinosaur yagara ichinzi Torosaurus ndiyo yekupedzisira fomu yevakuru yeTriceratops.

Humbowo hwakawanikwa mumadehenya. Chekutanga, vaongorori vakaongorora gross anatomy yedehenya. Vakanyatsoyera kureba kwedehenya rimwe nerimwe, kufara uye ukobvu. Vakabva vaongorora zvinhu zvidikidiki semagadzirirwo echimiro chepamusoro uye shanduko diki mumafiritsi. Kuongorora kwavo kwakaratidza kuti matehenya eTorosaurus "akagadziridzwa zvakanyanya". Mune mamwe mazwi, matehenya eTorosaurus uye bony frills aive achinja zvakanyanya pamusoro pehupenyu hwemhuka. Uye humbowo hwekugadzirisa hwaive hwakakura zvakanyanya kupfuura humbowo mune dehenya rakakura kwazvo reTriceratops, mamwe acho airatidza zviratidzo zvekuchinja.
Muchirevo chikuru, zvakawanikwa zvedino-blitz zvinosimbisa zvakasimba kuti madhinainari akawanda anozivikanwa semarudzi ega ega anogona kunge ari rudzi rumwe chete.
Kana zvimwe zvidzidzo zvichitsigira Torosaurus-as-adult-Triceratops mhedziso, zvinoreva kuti dinosaurs yeLate Cretaceous zvichida yakanga isiri yakasiyana-siyana sezvinotenda paleontologists vakawanda. Mhando shoma dzemadinosaur dzaizoreva kuti dzaive dzisingachinji kuchinjika kwezvakatipoteredza uye/kana kuti dzaive dzatoderera. Chero nzira, Late Cretaceous dinosaurs ingadai yakave yakanyanya kuparara zvichitevera chiitiko chakaipisisa chakachinja mamiriro ekunze ePasi uye nharaunda kupfuura boka rakasiyana.

——— Kubva kuna Dan Risch