Zieglerodina serrula ( Drygant, 1984 )

Drygant, Daniel & Szaniawski, Hubert, 2012, Lochkovian conodonts from Podolia, Ukraine, and their stratigraphic significance, Acta Palaeontologica Polonica 57 (4), pp. 833-861 : 854

Zieglerodina serrula ( Drygant, 1984)

Fig. 12W, Z, AA.

1984 Spathognathodus serrula sp. n.; Drygant 1984: 126, pl. 14: 24, 25.

2010 Zieglerodina serrula (Drygant) ; Drygant 2010: 53, pl. 1: 23, 24, 26, 27.

Material.—More than 90 complete Pa elements from the Ivanye Formation. Sections and samples: 11A/6, 1/3, 11, 2/1, 1b, 1v, 4a, 8a, 2A/7, 10, 52/ 525 m.

Remarks.—The elements are small in size (about 0.5–0.7 mm long and 0.17–0.27 mm wide), with straight upper margin of the blade which bears low and equal in size denticles. The lower margin of the blade straight or slightly sloping from its ends towards basal cavity. Basal cavity approximately at the mid−length or closer to the posterior end of the blade. Both lips of the basal cavity rounded and nearly symmetrical.

The elements are closest to Zieglerodina mashkovae ( Drygant, 1984) , but distinctly differ from it by the regularly arranged denticles, their nearly equal size and lack of the cusp.

Stratigraphic and geographic range.—Upper part of Caudicriodus serus Zone and Caudicriodus? steinachensis Zone in Podolia.