pachyrostransとは 意味・読み方・使い方

名詞

pachyrostrans

1. plural of pachyrostran
   • 2015 July 9, “Cranial Anatomy of Wendiceratops pinhornensis gen. et sp. nov., a Centrosaurine Ceratopsid (Dinosauria: Ornithischia) from the Oldman Formation (Campanian), Alberta, Canada, and the Evolution of Ceratopsid Nasal Ornamentation”^[1], PLOS ONE, DOI:10.1371/journal.pone.0130007: 

     Interestingly, the transition sequence of nasal horn evolution is partially recapitulated in the ontogeny of Pachyrhinosaurus and presumably other pachyrostrans, in which the nasal horn is first developed as a simple undulating ridge, which transforms into a relatively taller, yet broad-based horn-like structure that is subsequently remodeled into a low, rugose nasal boss [33 ].