Dinoosaur blitz?

Ubundi buryo bwo kwiga paleontologiya bushobora kwitwa "dinosaur blitz."
Iri jambo ryakuwe ku bahanga mu binyabuzima bategura “bio-blitzes.” Muri bio-blitz, abakorerabushake bateranira gukusanya buri cyitegererezo cyibinyabuzima gishoboka kiva ahantu runaka mugihe cyagenwe. Kurugero, bio-blitzers irashobora gutegura muri wikendi kugirango ikusanyirize hamwe ingero zose z’inyamanswa n’ibikururanda bishobora kuboneka mu kibaya cy’imisozi.
Muri dino-blitz, igitekerezo ni ugukusanya ibisigazwa byinshi byubwoko bumwe bwa dinosaur bivuye muburiri bwihariye bwibimera cyangwa mugihe runaka gishoboka. Mugukusanya icyitegererezo kinini cyubwoko bumwe, abahanga mubya paleontologue barashobora gushakisha impinduka zidasanzwe mubuzima bwubwoko bwibinyabuzima.

Ibisubizo bya dino-blitz imwe, byatangajwe mu mpeshyi ya 2010, byahungabanije isi abahiga dinosaur. Bakuruye kandi impaka zikaze muri iki gihe.
Mu myaka irenga ijana, abahanga mu bya paleontologue bashushanyije amashami abiri atandukanye ku giti cyubuzima bwa dinosaur: imwe ya Triceratops n'indi ya Torosaurus. Nubwo hari itandukaniro hagati yibi byombi, basangiye byinshi. Byombi byari ibyatsi. Bombi babayeho mugihe cya Late Cretaceous. Byombi bimaze kumera amagufwa, nkingabo, inyuma yumutwe.
Abashakashatsi bibajije icyo dino-blitz ishobora guhishura kubyerekeye ibiremwa bisa.

Mugihe cyimyaka icumi akarere gakungahaye cyane kuntara ya Montana izwi kwizina rya Hell Creek Formation yakomotse kumagufa ya Triceratops na Torosaurus.
40% by'ibimera byavuye muri Triceratops. Ibihanga bimwe byari bingana numupira wamaguru wabanyamerika. Abandi bari bangana na moteri nto. Kandi bose bapfuye mubyiciro bitandukanye byubuzima.
Naho ibisigazwa bya Torosaurus, ibintu bibiri byagaragaye: icya mbere, ibisigazwa bya Torosaurus byari bike, naho icya kabiri, nta gihanga cya Torosaurus kidakuze cyangwa cyigeze kiboneka. Buri gihanga cya Torosaurus cyari igihanga kinini. Kuki byari ibyo? Mugihe abahanga mu bya paleontologue batekerezaga kuri iki kibazo bakirengagiza ko bishoboka, basigaye bafite umwanzuro umwe udashidikanywaho. Torosaurus ntabwo yari ubwoko butandukanye bwa dinosaur. Diniosaur imaze igihe yitwa Torosaurus nuburyo bwa nyuma bwabantu bakuru ba Triceratops.

Ibihamya byabonetse mu gihanga. Ubwa mbere, abashakashatsi basesenguye anatomiya nini ya gihanga. Bapimye neza uburebure bwa buri gihanga, ubugari, n'ubugari. Hanyuma basuzumye amakuru ya microscopique nka makiyike yimiterere yubuso hamwe nimpinduka nto muri frill. Isuzuma ryabo ryerekanye ko igihanga cya Torosaurus "cyahinduwe cyane". Mu yandi magambo, ibihanga bya Torosaurus hamwe no kunanirwa amagufwa byari byarahindutse cyane mubuzima bwinyamaswa. Kandi ibyo bimenyetso byo guhindura ibintu byari byinshi cyane kuruta ibimenyetso ndetse no mu gihanga kinini cya Triceratops, bimwe muri byo byerekanaga ibimenyetso byerekana impinduka.
Mu rwego runini, ibyavuye muri dino-blitz byerekana neza ko dinosaur nyinshi zagaragaye nkubwoko bwihariye zishobora kuba ubwoko bumwe gusa.
Niba ubundi bushakashatsi bushyigikira umwanzuro wa Torosaurus-nkumuntu mukuru-Triceratops, bizasobanura ko dinosaur ya Late Cretaceous birashoboka ko itari itandukanye nkuko benshi mubashakashatsi ba paleontologue babibona. Ubwoko buke bwa dinozawusi bivuze ko butamenyereye guhinduka kubidukikije kandi / cyangwa ko byari bisanzwe bigabanuka. Ibyo ari byo byose, Lino Cretaceous dinosaurs yaba yarazimye nyuma yikintu gitunguranye cyatunguranye cyahinduye imiterere yikirere n’ibidukikije kuruta itsinda ritandukanye.

——— Kuva kuri Dan Risch