alcovasaurus造句

• Gilmore also claimed that " Alcovasaurus " was distinctive in having a rear spike pair equalling the front pair in size.
• Galton & Carpenter found this trait difficult to confirm from the extant photographic evidence, but it would make " Alcovasaurus " differ from all known stegosaurians with four spikes, which always show a shorter rear pair.
• As a further possible autapomorphy, " Alcovasaurus " is different from the Jurassic North American stegosaurians " Stegosaurus stenops ", " Stegosaurus sulcatus " and " Hesperosaurus " in that its sacrum is connected to the ilia by six pairs of sacral ribs instead of four.
• The Charles Gilmore in 1914, However, this action was not accepted by the paleontological community, and " S . longispinus " has been assigned to its own genus, " Alcovasaurus ", differing from " Kentrosaurus " in having more elongated tail spikes and the structure of the pelvis and vertebrae.
• Although the validity of " Stegosaurus longispinus " was disputed because the long dermal spines were likely to be a product of ontogeny or sexual dimorphism, Ulansky published the name in a self-published electronic publication that was not archived by an independent organization nor had an ISSN . This renders the name " Natronasaurus " invalid, and Peter Malcolm Galton and Kenneth Carpenter gave the genus another name, " Alcovasaurus ", in 2016, as part of a revision of the species.