世界地质
世界地質
세계지질
WORLD GEOLOGY
2010年
1期
6-15
,共10页
原蜥脚类%孙氏细细坡龙%早侏罗世%下禄丰组%云南禄丰
原蜥腳類%孫氏細細坡龍%早侏囉世%下祿豐組%雲南祿豐
원석각류%손씨세세파룡%조주라세%하록봉조%운남록봉
prosauropod%Xixiposaurus suni%Early Jurassic%Lower Lufeng Formation%Lufeng of Yunnan
云南禄丰下侏罗统下禄丰组产出一新的原蜥脚类孙氏细细坡龙(Xixiposaurus suni gen. et sp. nov.),其特征为:侧视头骨背缘向前强烈倾斜,下颌高度大于齿骨最小高度的两倍,颈椎体中第四颈椎体最长,耻骨裙宽度大于肠骨的耻骨突,股骨第四转子侧视具有V形切口.其系统位置比较进步,是禄丰发现的原蜥脚类中最进步的一种.
雲南祿豐下侏囉統下祿豐組產齣一新的原蜥腳類孫氏細細坡龍(Xixiposaurus suni gen. et sp. nov.),其特徵為:側視頭骨揹緣嚮前彊烈傾斜,下頜高度大于齒骨最小高度的兩倍,頸椎體中第四頸椎體最長,恥骨裙寬度大于腸骨的恥骨突,股骨第四轉子側視具有V形切口.其繫統位置比較進步,是祿豐髮現的原蜥腳類中最進步的一種.
운남록봉하주라통하록봉조산출일신적원석각류손씨세세파룡(Xixiposaurus suni gen. et sp. nov.),기특정위:측시두골배연향전강렬경사,하합고도대우치골최소고도적량배,경추체중제사경추체최장,치골군관도대우장골적치골돌,고골제사전자측시구유V형절구.기계통위치비교진보,시록봉발현적원석각류중최진보적일충.
A new prosauropod dinosaur Xixiposaurus suni gen. et sp. nov. from the lower Lufeng Formation of lower Jurassic in Lufeng of Yunnan, China is reported. The diagnostic characters are as follows: steep slant of the skull roof in lateral view; the maximum height of the mandible larger than twice of minimum height of the dentary; the 4th cervical centrum being longest in cervicals; minimum width of the pubic apron wider than width of the pubic peduncle; the fourth trochanter having a V-shape notch in lateral view. The phylogenetic analysis shows that it is one of the most derived forms among Chinese prosauropods.
