Mochtyella, Kielan-Jaworowska, 1961

Szaniawski, Hubert & Drygant, Daniel, 2014, Early Devonian scolecodonts from Podolia, Ukraine, Acta Palaeontologica Polonica 59 (4), pp. 967-983 : 970

Mochtyella ? sp.

Fig. 4D .

Material.— One specimen ( ZPAL Sc.8/2.2), sample S.Kh. 1 from lower part of the Borshchiv Horizon, section 48, Lower Lochkovian , Podolia .

Remarks. — One specimen representing single tooth of the anterior teeth chain has been found in the same sample as all specimens of Mochtyella sp. A and possibly is conspecific with it. In all other samples the anterior teeth of mochtyellids were not found. The specimen has similar shape to the anterior teeth of the mochtyellids hitherto known (see Kielan-Jaworowska 1966: fig. 5), but differ from them in denticulation. Those illustrated in the cited paper are denticulated either on both margins, like Mochtyella cristata Kielan-Jaworowska, 1961 and Vistulella kozlowskii Kielan-Jaworowska, 1961 or lack the denticulation at all, like Pistoprion transitans Kielan-Jaworowska, 1966 . The tooth found in Podolia is comparatively large and belonged probably to the posteri- or teeth of the left chain. It has a shape of wide, slightly curved spine with the upper margin outwardly arched and denticulated while the lower margin is inwardly arched and smooth. Somewhat similar detached teeth were assigned by Eller (1945) to the genus Eunicites Ehlers, 1868 .

Figures

Fig. 4. SEM micrographs of mochtyellid scolecodonts from Podolia. A–C. Mochtyella sp. A, lower part of the Borshchiv Horizon, section 48, Lower Lochkovian, sample S.Kh.1. A. ZPAL Sc.8/2.1, right MI in dorsal (A 1), left lateral (A 2), and right lateral (A 3) views. B. ZPAL Sc.8/2.2, incomplete right MI in dorsal view. C. ZPAL Sc.8/2.3, incomplete left MI in dorsal view. D. Mochtyella? sp., anterior tooth; lower part of the Borshchiv Horizon, section 48, Lower Lochkovian, sample S.Kh.1, ZPAL Sc.8/2.21. E, F. Mochtyellidae gen. et sp. indet., undetermined elements MI, upper part of the Ivanye Horizon, section 76, Pragian. E. ZPAL Sc.8/11.5, sample S.IZ.13, incomplete right MI in left lateral view. F. ZPAL Sc.8/8.18, sample S.IZ.13, left MI in right lateral view.