Arbour Victoria M, Evans David C
Department of Knowledge, Royal BC Museum, Victoria, BC, Canada.
Department of Natural History, Royal Ontario Museum, Toronto, ON, Canada.
PeerJ. 2019 Nov 7;7:e7926. doi: 10.7717/peerj.7926. eCollection 2019.
A partial dinosaur skeleton from the Sustut Basin of northern British Columbia, Canada, previously described as an indeterminate neornithischian, is here reinterpreted as a leptoceratopsid ceratopsian, , gen. et. sp. nov. The skeleton includes parts of the pectoral girdles, left forelimb, left hindlimb, and right pes. It can be distinguished from other named leptoceratopsids based on the proportions of the ulna and pedal phalanges. This is the first unique dinosaur species reported from British Columbia, and can be placed within a reasonably resolved phylogenetic context, with recovered as more closely related to than . At 68.2-67.2 Ma in age, falls between, and slightly overlaps with, both and , and represents a western range extension for Laramidian leptoceratopsids.
来自加拿大不列颠哥伦比亚省北部苏斯图特盆地的一具部分恐龙骨架,此前被描述为一种不确定的新鸟脚亚目恐龙,在此被重新解释为纤角龙科角龙,新属新种。该骨架包括部分肩带、左前肢、左后肢和右足。根据尺骨和趾骨的比例,它可以与其他已命名的纤角龙科恐龙区分开来。这是不列颠哥伦比亚省报道的首个独特恐龙物种,可以置于一个合理解析的系统发育背景中,其被发现与 比与 关系更密切。该恐龙年龄在6820万至6720万年前,处于 和 的时间范围之间且有轻微重叠,代表了拉腊米迪亚纤角龙科在西部的分布范围扩展。