Diagnoza

Elements subtriangular in occlusal view with the inner lobe delimited by shallow sinuses . Single cusp.

Porównanie

The North Atlantic population of the species slightly differs from the type one in a complete lack of elements with distinctly trilobate contours . Moreover, some younger populations from the Late Caradoc and Ashgill differ from the preceding ones in a more oval shape of the elements.

They are rep aced in the Siluri an by the type species of the genus, elements of which are almost circular. In Siberia another chrono(sub)species, P. nostras (MOSKALENKO, 1973) with T-shaped elements having their inner process ornamented with rows of tub ercles preceded it in the Chertov stage. This may suggest that Pseudooneotodus is actually a secondarily simplified outshoot of the group of platform conodonts widely occurring in the Llanvirn of Siberia and erroneously attributed to Polyplacognathus  but possibly related to Prattognathus.

Autekologia

Występowanie geograficzne

In Mójcza the species occurs sporadically beginning from the level 0.4 m above the discontinuity surface (E. robustus Subzone; Late L1anvirn ) up to the top of the section. Known also from other outcrops of the Mójcza Limestone and Zalesie Formation in Miedzygorz and Zalesie.
The species is reported to occurin England and other areas also in the Late Caradoc and Ashgill up to the base of the Himantian.

Zasięg czasowy

Materiały muzealne

Literatura

Dzik, J. 1994a Conodonts of the Mójcza Limestone. In: J. Dzik, E. Olempska, & A. Pisera. Ordovician carbonate platform of the Holy Cross Mountains. Palaeontologia Polonica 53, 43-128.