Nichollssaura

Nichollssaura waxay buuxisay farqi 40 milyan oo sano ah oo ku saabsan diiwaanka fosilka ee plesiosaurs-ka Waqooyiga Ameerika, taas oo macnaheedu yahay in aan la aqoon wax fosil plesiosaur ah oo ka soo jeeda wakhtigaas ka hor inta aan la helin.1

Lafta kaliya ee la yaqaan ee dhammaystiran waxaa si lama filaan ah u helay qof waday mashiinka qoda ee 100-ka tan ah ee macdanta ciidda saliidda leh ee u dhow Fort McMurray, Alberta, sannadkii 1994.1

Fosilku waa ku dhawaad dhammaystiran yahay, waxaana ka maqan oo kaliya dhawr lafood sida lugta hore ee bidix iyo qaar ka mid ah feeraha, kuwaas oo lumay markii mashiinku uu ku dhuftay lafaha.1

Gudaha caloosha fosilka Nichollssaura, saynisyahannadu waxay ka heleen 165 gastroliths (dhagaxyo caloosha ah) oo ka samaysan chert iyo quartzite, kuwaas oo laga yaabo inay ka caawiyeen inay dheefshiido cuntada.1

Gastroliths-ka ku jira Nichollssaura waxay la mid yihiin kuwa laga helay plesiosaur kale oo ka soo jeeda isla aagga, Wapuskanectes, taas oo soo jeedinaysa in labada xayawaanba ay dhagaxyada ka soo ururiyeen xeebo isku mid ah oo qadiimi ah.1

Nichollssaura waxaa markii hore loo bixiyay Nichollsia borealis sannadkii 2008, laakiin magacaas waxaa horey u isticmaalay nooc ka mid ah isopod (qolofley yar), markaa waxaa loo beddelay Nichollssaura sannadkii 2009.12