De tympanaalstreek van den zoogdierschedel |
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aanwezig achter achterste achterwand alisphenoid Anat annulus arterie basioccipitale beenige begrenzing beide beneden beschreven beschrijving bijholte binnen de trommelholte binnenwand bulla bulla ossea bullawand canalis Carnivoren caroticum carotis interna cellulae concaaf Echidna elkander entotympanicum Erinaceus evenals exoccipitale facialis FLOWER foramen gedeelte geheel gehooropening gescheiden gesloten goed groef holte hyoid Hyoidboog en facialiskanaal HYRTL incus Insectivoren jonge schedels kanaal kleine kraakbeen lacerum lateraal Lemur ligging ligt loopt maken Marsupialia mastoid mastoideus mediale MIVART onderwand ontwikkeling opening opgezwollen opzwelling ostium OWEN PARKER paroccipitalis petrosum postglenoideus posttympanicus proc processus tympanicus promontorium Prosimiae pterygoid rand recessus epitympanicus Rodentia schedel schijnt septum sinus slechts sphenoid spleet squamosum stapedia stapes styliformis stylohyale stylomastoideum sulcus superficies meatus Talpa tegmen tympani toestand Toxodon trommel trommelvlies tuba auditiva tusschen bulla tusschen tympanicum tympanicum tympanohyale uitsteeksel uitwendige gehoorgang Ungulaten ventralen wand verbeening vergroeid vertikale Viverrinae volgens voorste voorwand vormt waarschijnlijk waarts wand der trommelholte WINGE Xenarthra zichtbaar zooals zoodat Zoogdieren
Popular passages
Page 157 - ... malar bone with its frontal and zygomatic processes well-developed, the latter attached firmly to the zygoma ; the supratemporal process rising obliquely ; pterygoid bones compressed, and not inflated ; crotaphite impression approaching near to the occipital ridge ; tympanic bone attached, small, and not inflated ; (immediately in front of the circular facet for the stylohyal bone there descends a strong process, which may probably belong to the tympanic bone and form a portion of a vaginal process...
Page 369 - Observations anatom. sur la structure intérieure et le squelette de plusieurs espèces de cétacés.
Page 375 - Description of the Skeleton of an Extinct Gigantic Sloth, Mylodon Robustus, Owen, with Observations on the Osteology, Natural Affinities, and Probable Habits of the Megatherioid Quadrupeds in General.
Page 371 - FLOWER, WH, 1876. On some Cranial and Dental Characters of the existing Species of Rhinoceroses.
Page 317 - ... examination. the foetus of a Chiromys, there is no trace of an osseous bulla; the completely ossified annulus lies almost horizontally underneath the periotic. In a second stage (Lepidolemur) ossification begins to be developed from the lower sharp margin of the periotic, which adjoins the annulus. In the third stage (Lepidolemur) this outgrowth appears increased, and has a shell-like shape, with the concavity turned outward; the annulus is gradually being uplifted by it. In a fourth stage (Lemur...
Page 261 - Poebrotherium are relatively much larger than in the Recent genera, and are more rounded. In the small species, P. wilsoni, they are larger and less compressed than in P. labiatum, and in both the long diameter is directed nearly parallel to the cranial axis, while in the modern forms it is placed at a wide angle with it.
Page 135 - Nyctinomus in tbis particular. When the otic capsule falls out, as it is apt to do in the overmacerated skull, a foramen or a notch is always defined between the squama and the occipital bone. Sometimes a foramen of the same significance, viz, one occupied by the opisthotic during life, is seen on the occiput.
Page 378 - Viszeralskelett und die Nerven des Kopfes der Ganoiden und von Ceratodus. Niederl. Arch. f. Zool. Bd.
Page 377 - On some of the Foramina at the base of the Skull in Mammalia, and on the Classification of the Order Carnívora. — Proc. Zool. Soc. 1848, p. 63.
Page 290 - ... to be represented by a simple cartilaginous rod — wherefore it follows that one of two interpretations must be put upon the condition of the parts in the animal herein figured (fig. 3). Either the upper element must represent the stylo-hyal and the lower a vestigial cerato-hyal, or the lower a vestigial stylo-hyal and the upper the tympano-hyal of Flower. The tympano-hyal, as ordinarily understood, lies wholly or in part within the stylo-mastoid foramen. Inasmuch as no traces of a bony element...