- Tytuł:
- Redescription of neoceratopsian dinosaur Archaeoceratops and early evolution of Neoceratopsia
- Autorzy:
-
You, H
Dodson, P. - Powiązania:
- https://bibliotekanauki.pl/articles/21113.pdf
- Data publikacji:
- 2003
- Wydawca:
- Polska Akademia Nauk. Instytut Paleobiologii PAN
- Tematy:
-
Cretaceous
Archaeoceratops
China
Dinosauria
neoceratopsian dinosaur
Mazongshan area
evolution
dinosaur
Gansu Province
Neoceratopsia
Archaeoceratops oshimai
paleontology - Opis:
- Archaeoceratops oshimai Dong and Azuma, 1997 is a basal neoceratopsian from the late Early Cretaceous of Mazongshan area, Gansu Province, northwest China. Here we provide a detailed description on Archaeoceratops oshimai based on both the holotype, which consists of a well preserved, nearly complete skull, partial vertebral column, and partial pelvis, and the paratype, which consists of a partial vertebral column including a nearly complete tail, a partial pelvis, fragmentary hind limb bones, and a complete pes. Cladistic analysis shows that Archaeoceratopsis the sister group to all currently known Late Cretaceous Neoceratopsia, and Late Cretaceous Neoceratopsia diverged into two clades: the Asian Protoceratopsidae and the North American Ceratopsoidea, indicating a dual evolution for the two major groups of horned dinosaurs in two landmasses of Late Cretaceous. A suite of derived features characterizes Ceratopsoidea, such as a round−shaped external naris, a long caudolateral process of the rostral bone, and ventrally curved premaxillary ventral edge.
- Źródło:
-
Acta Palaeontologica Polonica; 2003, 48, 2
0567-7920 - Pojawia się w:
- Acta Palaeontologica Polonica
- Dostawca treści:
- Biblioteka Nauki
Artykuł