- Rostral bone
The rostral bone is the edentulous (toothless) dorsal component of the skeleton of the
beak , unique to (an 'autapomorphy ' of) theceratopsian dinosaur s.
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Rostral bone
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rostral bone — 1) the paired superficial dermal bone covering the ethmoid anterior to the eye in Holostei 2) a tooth bearing bone modified from an illicium on the tip of the snout of Lynophrinidae … Dictionary of ichthyology
rostral bone — a bone supporting the apex of the nose in cattle or of the snout in pigs … Medical dictionary
Rostral — can refer to:* Anatomical location or direction, front, as opposed to caudal (rear) * Rostral bone * Rostral column, a monumental scaled column, frequently decorated with ship bows * Rostral scale, in scaled reptiles … Wikipedia
nasal bone — a paired dermal bone occurring between the premaxilla and the prefrontal, antorbital or lachrymal on either side of the snout and usually enclosing the nares. Lepisosteus has three nasals, prenasal or rostral, adnasal or nasal and premaxillo… … Dictionary of ichthyology
fish — fishless, adj. /fish/, n., pl. (esp. collectively) fish, (esp. referring to two or more kinds or species) fishes, v. n. 1. any of various cold blooded, aquatic vertebrates, having gills, commonly fins, and typically an elongated body covered with … Universalium
Fish — /fish/, n. Hamilton, 1808 93, U.S. statesman: secretary of state 1869 77. * * * I Any of more than 24,000 species of cold blooded vertebrates found worldwide in fresh and salt water. Living species range from the primitive lampreys and hagfishes… … Universalium
Ceratopsia — Unikonta Ceratopsians Temporal range: Late Jurassic – Late Cretaceous, 156–65 Ma … Wikipedia
Psittacosaurus — Taxobox name = Psittacosaurus fossil range = Early Cretaceous image width = 200px image caption = Mounted cast of a Psittacosaurus mongoliensis skull at the Australian Museum, Sydney. regnum = Animalia phylum = Chordata classis = Sauropsida… … Wikipedia
Jaw — The jaw is either of the two opposable structures forming, or near the entrance to the mouth. The term jaws is also broadly applied to the whole of the structures constituting the vault of the mouth and serving to open and close it and is part of … Wikipedia
Auroraceratops — Taxobox| name = Auroraceratops fossil range = Early Cretaceous regnum = Animalia phylum = Chordata classis = Sauropsida ordo = Ornithischia subordo = Ceratopsia genus = Auroraceratops genus authority = You et al. , 2005 subdivision ranks =… … Wikipedia
