Diagnoza

Most specimens with blunt apex and ovoid appearance of the cusp, rare conical elements; all bear sharp longitudinal ribs merging in a chevron pattern on the external surface of the cusp or passing continuously across the tip.

Derivation of the name: Referring to ornate ribbing of the cusp.

Porównanie

From the morphologically closest M. chevronella differs in a more regular and less robust appearance of cusps and usually flat or concave basal cavity. In the type sample of M. ornata sharply conical elements also occur. Whether they belong to the same apparatus or represent sympatric occurrence of M. conoidalis requires testing with more material.

Autekologia

Występowanie geograficzne

The type locality and early Famennian of Żbik ravine in Dębnik near Cracow.

Zasięg czasowy

Materiały muzealne

35 specimens.

Literatura

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