Diagnoza

The sp elements of this species show extremely elongated processes with an incipient platform continuing along at least the dorsal process . The true platform never develops, instead, in an adult specimen (there is only one identified, in sample Dz-46) two stoong denticles develop on both sides of the cusp. In younger samples from Dzikowiec, juveniles hardly distinguishable from those of sample Dz-46 frequently occur but they
do not reach the size at which lateral denticles develop. Whether they are conspecific orjust represent
the generalised 'Bispathadus'stabilis stock is hard to decide. I am not able to hace the ancestry of this species.
The associated oz, syrnrnetry transition series, and ne elements, well identifiable also in the Muhua samples, are of a very generalised polygnathid type. Morphologic distinctions between oz elements of Weyerognathus, Pseudopolygnathus, Mehlina, and Falcodus are dfficult to specify and it seems that their population variabilities overlap. Those elements with sfiongly arched
contours and relatively short external process most probably represent Falcodus, as their frequencies
correlate with other elements attributed here to this genus. The elements oz with basal margins of
processes merging angularly can be attributed to Weyerognathus. Those with an almost straight
profile of the base may represent Pseudopolygnathus. The most difficult to separate are elements of
Mehlina al.d Pandorinellina whicb are the most generalised and this can be safely done only in
samples with a large number of elements of these genera.
The type population of Spathognathodus (Pandorinellina) laterigranosus Gedik, 1969 is from
sample 3623 of PldckenpaB in the Carnic Alps, the holotype being an adult specimen with wetl
developed lateral denticles on the basal cup. There are alsojuveniles without this feature in the same
sample.

Porównanie

Autekologia

Występowanie geograficzne

Zasięg czasowy

Materiały muzealne

Literatura