Rekonstrukcja składu aparatu Klapperilepis ultima .

Elementy aparatu z próbki Pł-36 z Płucek koło Łagowa; najwcześniejszy famen; okazy ZPAL cXVI/1506, 1514, 1518, 1520, 1521, 1523 i 1525 (Dzik 2006).

Diagnoza

Relatively wide and short platform of P₁ elements, underived appearance of A-shaped M elements.

Porównanie

Wide platform makes it different from the succeeding K. triangularis, but this character is size-dependent.

Autekologia

The origin of the lineage remains cryptic; presumably it represents an exotic open-sea and cold-water element that earlier inhabited Frasnian higher latitudes.

Występowanie geograficzne

Worldwide in the Late Devonian tropics.

Zasięg czasowy

Latest Frasnian P. linguiformis Zone and the earliest part of the Famennnian.

Materiały muzealne

ZPAL: 2,084 specimens (1,207 from the Famennian).

Literatura

Dzik, J. 2002. Emergence and collapse of the Frasnian conodont and ammonoid communities in the Holy Cross Mountains, Poland. Acta Palaeontologica Polonica 47,  565-650.

Dzik, J. 2006. The Famennian „Golden Age” of conodonts and ammonoids in the Polish part of the Variscan sea. Palaeontologia Polonica 63, 1-359.