Striatolamia macrota (Agassiz, 1843)
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publication ID |
https://doi.org/ 10.26879/1283 |
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persistent identifier |
https://treatment.plazi.org/id/A1525343-662D-FF98-FE8C-B166FD95FDC5 |
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treatment provided by |
Felipe |
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scientific name |
Striatolamia macrota (Agassiz, 1843) |
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Striatolamia macrota (Agassiz, 1843)
Figure 4G–M View FIGURE 4
1843 Otodus macrotus n. sp.; Agassiz, p. 273, pl. 32, figs. 29, 30.
1843 Lamna elegans n. sp.; Agassiz, p. 289,
pl. 35, figs. 1-7; pl. 37a, figs. 58, 59.
1861 Otodus macrotus Ag. ; Rogovich, p. 43,
pl. V, figs. 16-22.
1861 Lamna compressa Ag. ; Rogovich, p. 46, pl. V, figs. 29-30a.
1861 Oxyrhina brevidens ; Rogovich, p. 57,
pl. VIII, figs. 11, 11a.
1874 Otodus striatus ; Winkler, p. 8, pl. 1, figs. 7- 9.
1895 Odontaspis macrota var. rossica ; Jaekel, p. 11, pl. 1, figs. 8-17; pl. 2, figs. 8-10.
1901 Odontaspis macrota ; Eastman, p. 105,
pl. 14, fig. 4.
1901 Lamna striata n. sp.; Priem, p. 484, pl. 11, figs. 29, 30.
1905 Odontaspis macrota ; Leriche, p. 75.
1912 Otodus macrotus Ag. ; Savtchenko, p. 173- 174, pl. XIII, figs. 7-10.
1912 Oxyrhina brevidens Rog. ; Savtchenko,
p. 181.
1928 Odontaspis macrota Ag. ; Menner, p. 301- 302.
1942 Odontaspis macrota striata var. semistriata ; Leriche, p. 13-14, pl. 1, figs. 6-8.
1964 Striatolamia macrota (Agassiz, 1843) ; Glickman, p. 120-121, 124-126, 143-144, pl. XIII, figs. 1-3, 5, 7-9, 14; pl. XXIII,
figs. 12, 13, 15, 16.
1964 Striatolamia rossica prima ; Glickman,
p. 124, 128, 172, 182, pl. XXIV, figs. 1-9.
1964 Striatolamia rossica usakensis ; Glickman, p. 124, 126, 148-149, 172, 177-178, pl. VII, figs. 3, 4; pl. XII, figs. 9-13, 16-18; pl. XIII, figs. 2-6, 11, 13.
1964 Striatolamia rossica rossica ; Glickman,
p. 121, 124, 126, 172, 178, pl. XI, figs. 9- 13; pl. XII, figs. 3-8, 14-15.
1968 Striatolamia macrota ; Applegate, p. 32-36, pls. 1-3.
1985 Striatolamia macrota (Agassiz, 1843) ; Bor, p. 92, pl. 2, figs. 9-11.
1987 Striatolamia macrota (Agassiz) ; Cappetta, p. 90, fig. 80A-E.
1988 Odontaspis (Synodontaspis) macrota (L. Agassiz, 1843) ; Bauzá and Gómez Pallerola, p. 123-126, fig. 2.14-2.21.
1988 Striatolamia macrota (Agassiz) ; Nolf,
p. 110, pl. 27.
1999 Striatolamia macrota (Agassiz, 1843) ; Zhelezko and Kozlov, p. 131-135, pl. 9, figs. 1-3; pl. 10; pl. 11, figs. 1-4; pl. 57; pl.
58, figs. 1-5, 7-10; pl. 59; pl. 60, figs. 7, 9.
2000 Striatolamia macrota (Agassiz) ; Cunningham, pl. 2, fig. 2; pl. 5, figs. 2, 4; pl. 6,
figs. 2, 4; pl. 7, fig. 2; pl. 8, fig. 2; pl. 9, fig.
2; pl. 10, fig. 2; pl. 11, fig. 2; pl. 12, fig. 2; pl. 13, fig. 2; pl. 14, fig. 2; pl. 15, fig. 2; pl.
16, fig. 2; pl. 17, fig. 2.
2006 Striatolamia macrota (Agassiz) ; Malyshkina, pl. 6, fig. 1; pl. 10, figs. 1-4.
2006 Striatolamia macrota (Agassiz) ; Udovichenko, p. 202, pl. I, fig. 13.
2012 Striatolamia macrota (Agassiz, 1838) ; Cappetta, p. 189-190, fig. 178.
2012 Striatolamia macrota (Agassiz, 1843) ; Diedrich, p. 16, fig. 12.
2013 Striatolamia macrota (Agassiz, 1843) ; Malyshkina et al., pl. 13, figs. 2, 3.
2013 Striatolamia macrota (Agassiz, 1843) ; Otero et al., fig. 4.19-4.26.
2014 Striatolamia macrota (Agassiz, 1843) ; Carlsen and Cuny, p. 43-45, fig. 3G-L.
2019 Striatolamia macrota (Agassiz, 1843) ; Ebersole et al., p. 32-37, fig. 11.
2019 Striatolamia macrota (Agassiz, 1843) ; Trif et al., p. 8-10, figs. 5.5-7’, 10-11.
2021 Striatolamia macrota (Agassiz, 1843) ; Adnet et al., p. 28-29, fig. 2.2-2.4.
2022 Striatolamia macrota (Agassiz, 1843) ; Trif et al., fig. 5G-O.
Material. Two upper lateral teeth, NMNHU-G 391/
54, 391/105; one lower lateral tooth, NMNHU-G
391/55; one upper posterior tooth, NMNHU-G 391/
92, Vyshhorod.
Description. Lateral teeth ( Figure 4G–L View FIGURE 4 ) with triangular labiolingually flattened crowns are quite large or moderate-sized, and their height varies from 12.6 to 21.5 mm and width from 14.2 to 20.2
mm. Both upper and lower teeth are recognised in the series according to the curvature of the labial side of their crowns (Cunningham, 2000). The labial surface of the upper teeth is nearly straight from the base of the enameloid to the crown tip,
whereas that of the lower teeth is slightly convex.
There is a main cusp with a distal inclination and two shovel-shaped cusplets on the crown of each lateral tooth. The lingual face is ornamented with weak parallel striations reaching the middle of the crown. The striations are better pronounced in upper lateral teeth and less developed or absent in the lower lateral teeth described herein. The bladelike cutting edges are complete in all specimens regardless of their position in the jaw.
The upper posterior tooth ( Figure 4M View FIGURE 4 ) has a very low and wide crown, and its total height is 3.4 mm and maximum width is 6.4 mm. The labial side of the crown is straight. There is a semi-circular ridge with numerous thin vertical striations on the lingual side of the crown. The distal lateral denticle retains its definition from the crown, but the mesial lateral denticle is shoulder-like (sensu Cunningham, 2000:10). The root is notched labially, whereas its lingual side is swollen and is divided in the middle by a deep vertical furrow. The shallow interspace between the root lobes is V-shaped. The enameloid on the lingual surface is strongly striated.
Remarks. The lateral teeth described are similar in morphology and size to those in Striatolamia macrota (Agassiz, 1843). This species was widely distributed in Europe and Asia during the Ypresian, Lutetian, and Bartonian (Cappetta, 2012). The presence of S. macrota in the fossil record of Ukraine was documented by Zhelezko and Kozlov (1999) and Udovichenko (2006). Eight species of the genus Striatolamia are now considered to be valid (Pollerspöck and Straube, 2022), including two Paleocene taxa (Striatolamia ex gr. S. whitei (Arambourg, 1952), S. striata (Winkler, 1874)) and two Eocene species from the territory of Ukraine (Zhelezko and Kozlov, 1999). Striatolamia sibirica Zhelezko in Zhelezko and Kozlov (1999) was represented in the Dnieper–Donets Basin during the Bartonian. The specimens considered differ from those of S. sibirica in having larger roots, thicker crowns, and cusplets more isolated from the main cusp (Zhelezko and Kozlov, 1999). According to Ebersole et al. (2019), there are no appreciable differences between the teeth of S. macrota and S. striata, and these taxa therefore could be part of a species complex that cannot be differentiated morphologically. As compared to the specimens considered here, the teeth of the Bartonian/Ypresian species Striatolamia tchelkarnurensis are much larger and more robust, and have a less pronounced lingual ornamentation (Malyshkina, 2021).
Rogovich (1861) described and figured a new species of the genus Oxyrhina—O. brevidens — from ‘blue clay near Kyiv.’ The specimen considered is part of the type series (syntype), while the other ‘few teeth’ mentioned in the original description were subsequently lost. Savtchenko (1912), when analysing shark remains from the Eocene of Mangyshlak, used the material from Rogovich’s collection for comparison. He concluded that one specimen from his own collection was almost identical morphologically to that of Oxyrhina brevidens. This species is represented in the database by Pollerspöck and Straube (2022) but placed in the genus Striatolamia, probably because of the presence of characteristic (albeit weak) striation on the lingual side of the crown. We suggest that the specimen initially described by Rogovich (1861) as O. brevidens in fact represents the upper left posterior tooth of S. macrota. It is very similar to the one figured by Cunningham (2000: pl. 10, fig. 2, upper row, second from the left).
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