Protopanderodus liripipus Kennedy, Barnes & Uyeno, 1979 from the Mójcza limestone.

Protopanderodus liripipus Kennedy, Barnes & Uyeno, 1979 - M and S₀ elements

Diagnoza

Bases of the elements elongated into internal and external flat processes of parabolic shape.

Porównanie

The species differs from its ancestor P. varicostatus in a further development of wings at the element bases and from its successor P. insculptus in the lack of a denticle on the inner of these wings. Juvenile specimens do not show diagnostic features of the species, being similar to P. gradatus in their general shape except fo ravery deep cavity within a funnel-shaped base. The wings develop gradually during growth of the element. Also the shape of the cusp changes somewhat, in mature specimens being almost straight, which gives specimens the characteristic triangular appearance .

Autekologia

Występowanie geograficzne

Zasięg czasowy

from the P. gerdae Subzone of the A. tvaerensis Zone to the A. ordovicicus Zone. In Mójcza it occurs in the marly limestone of the Za1esie Formation (A. ordovicicus Zone), being common also in coeval strata in Międzygorz and
Zalesie.

Materiały muzealne

ZPAL

Literatura

Dzik, J. 1994. 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.