Pachycephalosauria

Pachycephalosauria
Thời điểm hóa thạch: Creta muộn, 90–66 triệu năm trước đây
Cast of a Pachycephalosaurus wyomingensis skull, Oxford University Museum of Natural History
Phân loại khoa học
Giới (regnum)Animalia
Ngành (phylum)Chordata
Nhánh Dinosauria
Bộ (ordo)Ornithischia
Phân thứ bộ (infraordo)Pachycephalosauria
Họ (familia)Pachycephalosauridae
Loài điển hình
†Pachycephalosaurus wyomingensis
Gilmore, 1931 (tên được bảo toàn)
Các chi
Xem bài.
Danh pháp đồng nghĩa
Homalocephalidae Dong, 1978

Pachycephalosauria (/ˌpæk[invalid input: 'ɨ']ˌsɛfəl[invalid input: 'ɵ']ˈsɔːriə/, khủng long đầu vòm) là nhóm khủng long nằm trong nhánh khủng long hông chim. Các chi được nhiều người biết đến gồm Pachycephalosaurus, Stegoceras, Stygimoloch và Dracorex. Phần lớn chúng sống ở Bắc Mĩ và châu Á vào cuối kỉ Phấn trắng. Tất cả chúng đều đi bằng hai chân, có thể là loài ăn thực vật hoặc ăn tạp với một hộp sọ dày. Một số hóa thạch cho thấy vòm sọ tròn và dày đến vài inch, trong khi những hóa thạch khác hộp sọ thẳng hoặc hình nêm.

Phân loại

Chú thích

  1. ^ Watabe, Tsogtbaatar & Sullivan 2011
  2. ^ a b c d e Longrich, Sankey & Tanke 2010
  3. ^ https://cdnsciencepub.com/doi/10.1139/cjes-2020-0190
  4. ^ a b Stokstad 2007

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