世界地质
世界地質
세계지질
WORLD GEOLOGY
2010年
1期
1-5
,共5页
吴文昊%Pascal Godefroit%韩建新
吳文昊%Pascal Godefroit%韓建新
오문호%Pascal Godefroit%한건신
黑龙江嘉荫%鸭嘴龙亚科%黑龙江满洲龙%晚白垩世%渔亮子组
黑龍江嘉蔭%鴨嘴龍亞科%黑龍江滿洲龍%晚白堊世%漁亮子組
흑룡강가음%압취룡아과%흑룡강만주룡%만백성세%어량자조
Jiayin of Heilongjiang%Hadrosaurinae%Mandschurosaurus amurensis%Upper Cretaceous%Yuliangzi Formation
鸭嘴龙科(Hadrosauridae)化石根据头骨特征等被划分为鸭嘴龙亚科(Hadrosaurinae, 无头冠)和赖氏龙亚科(Lambeosaurinae, 有头冠).黑龙江嘉荫龙骨山晚白垩世渔亮子组保存了丰富的鸭嘴龙化石,其中黑龙江满洲龙Mandschurosaurus amurensis(Riabinin, 1925)是最早在中国发现的恐龙,属鸭嘴龙亚科;嘉荫卡龙Charonosaurus jiayinensis(Godefroit et al, 2000)也是在这里发现的,属赖氏龙亚科.本文描述了采自嘉荫龙骨山的部分左齿骨化石和一些牙齿化石,新的化石明显属于鸭嘴龙亚科,主要特征为:齿骨每个牙列有5个以上的牙齿,牙冠边缘小锯齿由乳头状小瘤构成.新发现的牙齿牙冠上发育有明显的第二、三副脊,这在鸭嘴龙中是罕见的.新发现的化石明显不同于产于同一地点的嘉荫卡龙,但由于黑龙江满洲龙模式标本没有保存牙齿,因此暂不能与之充分对比.
鴨嘴龍科(Hadrosauridae)化石根據頭骨特徵等被劃分為鴨嘴龍亞科(Hadrosaurinae, 無頭冠)和賴氏龍亞科(Lambeosaurinae, 有頭冠).黑龍江嘉蔭龍骨山晚白堊世漁亮子組保存瞭豐富的鴨嘴龍化石,其中黑龍江滿洲龍Mandschurosaurus amurensis(Riabinin, 1925)是最早在中國髮現的恐龍,屬鴨嘴龍亞科;嘉蔭卡龍Charonosaurus jiayinensis(Godefroit et al, 2000)也是在這裏髮現的,屬賴氏龍亞科.本文描述瞭採自嘉蔭龍骨山的部分左齒骨化石和一些牙齒化石,新的化石明顯屬于鴨嘴龍亞科,主要特徵為:齒骨每箇牙列有5箇以上的牙齒,牙冠邊緣小鋸齒由乳頭狀小瘤構成.新髮現的牙齒牙冠上髮育有明顯的第二、三副脊,這在鴨嘴龍中是罕見的.新髮現的化石明顯不同于產于同一地點的嘉蔭卡龍,但由于黑龍江滿洲龍模式標本沒有保存牙齒,因此暫不能與之充分對比.
압취룡과(Hadrosauridae)화석근거두골특정등피화분위압취룡아과(Hadrosaurinae, 무두관)화뢰씨룡아과(Lambeosaurinae, 유두관).흑룡강가음용골산만백성세어량자조보존료봉부적압취룡화석,기중흑룡강만주룡Mandschurosaurus amurensis(Riabinin, 1925)시최조재중국발현적공룡,속압취룡아과;가음잡룡Charonosaurus jiayinensis(Godefroit et al, 2000)야시재저리발현적,속뢰씨룡아과.본문묘술료채자가음용골산적부분좌치골화석화일사아치화석,신적화석명현속우압취룡아과,주요특정위:치골매개아렬유5개이상적아치,아관변연소거치유유두상소류구성.신발현적아치아관상발육유명현적제이、삼부척,저재압취룡중시한견적.신발현적화석명현불동우산우동일지점적가음잡룡,단유우흑룡강만주룡모식표본몰유보존아치,인차잠불능여지충분대비.
Hadrosauridae is taxonomically subdivided into the Hadrosaurinae and Lambeosaurinae based mainly on the skull characteristics. Hadrosaurid fossils are particularly abundant in Upper Cretaceous of Yuliangzi Formation from Longgushan of Jiayin, Heilongjiang. Mandschurosaurus amurensis (Riabinin, 1925), the first dinosaur fossil found from China, was discovered in this locality and belongs to hadrosaurinae. Charonosaurus jiayinensis (Godefroit et al., 2000) was also excavated here and belongs to lambeosaurinae. The authors describe a partial left dentary with dozens teeth from the Longgushan, and this new fossils clearly belong to hadrosaurinae. Because it is characterized by the following synapomorphies: 5 teeth or more in each alveolus of the dentary and dentary marginal denticles reduced to small papillae along the dorsal half of the crown. Well developed secondary and tertiary ridges on the lingual side of the dentary crowns are unusual in hadrosaurids. The newly discovered fossil is obviously different from Charonosaurus jiayinensis occurred in the same place, while the comparisons with Mandschurosaurus amurensis are difficult, because the dentary referred to the holotype of this taxon lacks teeth in preservation.
