Jiuquanornis
Jiuquanornis ƙaramin dinosaur ne mai kama da tsuntsu wanda ya rayu kimanin shekaru miliyan 120 da suka wuce. Yana da ƙashin wishbone mai siffar U da ƙashin sternum wanda yayi kama da na wasu tsuntsayen ƙasa na zamani. Masana kimiyya suna tunanin cewa wataƙila mai saurin gudu ne wanda yake cin nama.12
Yaushe ya rayu?
Yaya saurin sa yake?
Gaskiya mai ban sha'awa
An san Jiuquanornis ne daga burbushi guda ɗaya wanda aka fara bayyana shi a shekarar 2013. Burbushin ya haɗa da sassan ƙashin ƙirji, furcula, da kuma gaban jiki.1
Ƙashin ƙirjinsa yana da dogayen sassa sirara da ake kira trabeculae, waɗanda ake gani a tsuntsayen zamani masu rayuwa a ƙasa kamar kaji da tinamous.1
Jiuquanornis yana da furcula (ƙashin sa'a) mai siffar U tare da ƙaramin kusurwa na kusan digiri 36, kuma ba shi da hypocleidium, wani ƙaramin sashi da ake samu a wasu tsuntsaye.1
Masana kimiyya suna tunanin Jiuquanornis ya kasance basal ornithuromorph, ma'ana ya kasance dangi na farko na tsuntsayen zamani amma ba kakansu na kai tsaye ba.1
An gano burbushin Jiuquanornis a cikin Tsarin Xiagou, wanda yake da shekaru kusan miliyan 121 zuwa 113, daga zamanin Early Cretaceous.21
An sanya wa Jiuquanornis suna ne bayan birnin Jiuquan, wanda yake kusa da wurin da aka gano burbushin. Sunan nau'in niui yana girmama Farfesa Shao-Wu Niu saboda aikinsa na ilimin ƙasa.1
Da farko an yi tunanin burbushin Jiuquanornis bai cika ba don a ba shi suna, amma daga baya masana kimiyya suka yanke shawarar cewa ya bambanta da sauran tsuntsaye don ya zama sabon nau'i.1
Don ƙwararrun dino
- Sunan kimiyya
- Jiuquanornis
- Wanda ya ba da suna
- Wang et al. 20132
- Rukuni
- Tsuntsayen farko
- Iyali / rukuni
- Ornithuromorpha2
- Rarrabewa
- Theropoda > Avialae2
- Zamanin duwatsu
- shekaru miliyan 121 zuwa 113 (Aptian)2
- Tsarin duwatsu
- Xiagou2
- Kasashe
- China2
- Rubutun burbushin halittu
- 1 a cikin Bayanan Paleobiology2
- Gano
- Wang da abokan aikinsa ne suka ba Jiuquanornis suna a shekarar 2013. Burbushin, samfurin GSGM-05-CM-021, an gano shi ne a Xiagou Formation kusa da Changma a lardin Gansu, kasar Sin. Da farko an bayyana shi a matsayin tsuntsu ba tare da suna ba a shekarar 2005, amma daga baya aka gane shi a matsayin sabon nau'in halitta.12
- Har yanzu ana muhawara
- Masana kimiyya ba su da tabbas ko Jiuquanornis ya rayu a ƙasa ko a cikin ruwa ba, saboda burbushin sa bai cika ba don a gane. Siffar ƙashin ƙirjinsa na nuna cewa ƙila ya kasance mai saurin gudu, amma ana buƙatar ƙarin burbushi.1
Inda bayanan suka fito
- Previously Unrecognized Ornithuromorph Bird Diversity in the Early Cretaceous Changma Basin, Gansu Province, Northwestern China (journals.plos.org)
- Jiuquanornis in The Paleobiology Database (CC BY 4.0): shekaru, wurare, nau'in duwatsu, rarrabawa.
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