. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. 2 Figure 1. Mus. Pal. 57551, a lower left lateral of Notorhynchus pecdnatus (Agassiz). Figure 2. Mus. Pal. 57552, a lower left posterior of the same species. Crownlet heights are mm. (four broken ones), mm., mm., mm., mm., mm. Denticle heights are mm., mm., mm., mm. When this tooth is compared with recent hexanchids the enlarged denticles are conspicuously different. However, a similar lateral has been figured by Agassiz (1843) and called Notid
. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. 2 Figure 1. Mus. Pal. 57551, a lower left lateral of Notorhynchus pecdnatus (Agassiz). Figure 2. Mus. Pal. 57552, a lower left posterior of the same species. Crownlet heights are mm. (four broken ones), mm., mm., mm., mm., mm. Denticle heights are mm., mm., mm., mm. When this tooth is compared with recent hexanchids the enlarged denticles are conspicuously different. However, a similar lateral has been figured by Agassiz (1843) and called Notidanus pectinatus Agassiz. The more common British Cretaceous hexanchid is Notidanus microdon Agassiz. Agassiz (1843:221-222), stated that his tooth differed from Notidanus microdon in having enlarged tooth-like serrations and was therefore worthy of a specific name. Woodward (1886) remarked in connection with Notidanus pectina- tus^ "This type of tooth appears to be extremely rare and I have not seen any examples" Woodward (1889:160) placed Notidanus pec-. 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 Southern California Academy of Sciences. Los Angeles, Calif. : The Academy
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