. Bulletin of the British Museum (Natural History), Geology. 306 REVISION OF ACTINOPTERYGIAN AND COELACANTH FISHES Lectoholotype. P 7625, the type nominated by Woodward (18956 : 160), from the Upper Lias, Gloucestershire. Material. Specimens in the and the Royal Scottish Museum, Edinburgh. Description. The skull. The skull roofing bones are feebly ornamented. The Dsp Dpt E?sc §sc Ant Pmx lnfc Inf""" Mx. i- 10 mm Fig. 42. Tetragonolepis discus Egerton. Restoration of skull in lateral view. greatest degree of ornamentation is found on the suborbitals
. Bulletin of the British Museum (Natural History), Geology. 306 REVISION OF ACTINOPTERYGIAN AND COELACANTH FISHES Lectoholotype. P 7625, the type nominated by Woodward (18956 : 160), from the Upper Lias, Gloucestershire. Material. Specimens in the and the Royal Scottish Museum, Edinburgh. Description. The skull. The skull roofing bones are feebly ornamented. The Dsp Dpt E?sc §sc Ant Pmx lnfc Inf""" Mx. i- 10 mm Fig. 42. Tetragonolepis discus Egerton. Restoration of skull in lateral view. greatest degree of ornamentation is found on the suborbitals, which are covered by numerous tubercles of enamel. That on the extrascapulars, parietals and frontals is sparse, confined to a few isolated tubercles. The remaining skull bones appear smooth, in particular those constituting the opercular apparatus. The skull roofing bones are invariably fused to one another making the suture fines difficult to decipher. The parietals are almost square in outline, bounded on either side by the larger dermopterotics (Text-fig. 42). The extrascapular is of the. 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)
Size: 1500px × 1665px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbritishmuseumnaturalhistory, bookcentury1900, bookcoll
