. Bulletin of the British Museum (Natural History), Geology. 494 MEGISTOTHERIUM FROM paroccipital and postglenoid processes accommodated the external auditory meatus. The elongate glenoid carries the ramus of the squamosal far out laterally before it curves anteriorly to join the ramus of the jugal. The zygomatic arch is notable for being extremely wide and stoutly built, although the height of the bone dorso- ventrally is proportionately not as great as in for example Patriofelis. Ear Region. The course of the external auditory meatus is horizontal along a passage between the postglenoid proc
. Bulletin of the British Museum (Natural History), Geology. 494 MEGISTOTHERIUM FROM paroccipital and postglenoid processes accommodated the external auditory meatus. The elongate glenoid carries the ramus of the squamosal far out laterally before it curves anteriorly to join the ramus of the jugal. The zygomatic arch is notable for being extremely wide and stoutly built, although the height of the bone dorso- ventrally is proportionately not as great as in for example Patriofelis. Ear Region. The course of the external auditory meatus is horizontal along a passage between the postglenoid process and the paroccipital process. As in all creodonts, there is no tympanic bulla and no indication that one was ever present. A small triangular window around the sphenoid, exoccipital and squamosal reveals the petrosum. A small protuberance on the anterior face of the exoccipital may have Pet. FO RR. MLF E AM J HP Fig. 7. Megistotherium osteothlastes gen. et sp. nov. Left ear region, ventral aspect. ACF = anterior condylar foramen; EAM = external auditory meatus; FO = fenestra ovale; FR = fenestra rotunda; MLF = medial lacerate foramen; Pet = petrosum; THP = tympanohyal Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
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