. Bulletin. Science; Natural history; Natural history. SCYMNODON 7RINGENS IN ORANGE COUNTY 51 MCUR. MLAD MLAF MRL Fig. 1. Tooth terminology as applied to the lower right anterolateral tooth of Scymnodon Iringens, LACM 60613. A, lingual view; B, labial view. Abbreviations: AS, attachment surface of root; B, blade; BER, basal edge of root; C, cusp; CLAF, central labial foramen; CLIF, central lingual foramen; DCUR, distal cutting ridge; DLAF, distal labial foramen; DRL, distal root lobe; LLP, lingual lon- gitudinal protuberance; MCUR, mesial cutting ridge; MD, mesial depression; MLAD, mesiolabial
. Bulletin. Science; Natural history; Natural history. SCYMNODON 7RINGENS IN ORANGE COUNTY 51 MCUR. MLAD MLAF MRL Fig. 1. Tooth terminology as applied to the lower right anterolateral tooth of Scymnodon Iringens, LACM 60613. A, lingual view; B, labial view. Abbreviations: AS, attachment surface of root; B, blade; BER, basal edge of root; C, cusp; CLAF, central labial foramen; CLIF, central lingual foramen; DCUR, distal cutting ridge; DLAF, distal labial foramen; DRL, distal root lobe; LLP, lingual lon- gitudinal protuberance; MCUR, mesial cutting ridge; MD, mesial depression; MLAD, mesiolabial depression; MLAF, mesiolabial foramen; MLIF, mesiolingual foramen; MP, mesial protuberance; MRL, mesial root lobe; TG, transverse groove; TN, transverse notch. Scale line equals 1 mm. The above data suggest that the fauna at LACM 1066 is probably late Pleis- tocene. Dental Terminology The tooth terminology used throughout this study follows, with slight modifi- cation, Casier (1961), Compagno (1970), and Ledoux (1970) and is illustrated in Figure 1. The tooth row-group terminology, as it is applied to the lower dental series in Scymnodon ringens, is shown in Figure 2. Recent Comparative Specimens A tissue-free tooth set of the lower right functional and first replacement series in Scymnodon ringens was prepared from LACM Section of Ichthyology, spec- imen No. 37974-1; a 1000 mm (total length) female, collected at a depth of 750-800 meters at 56°25'N, 9°15'W, in the North Atlantic, north of Scotland, by 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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