Arpagodus

Arpagodus is a genus of extinct conodonts belonging to the family Balognathidae. These primitive chordates are characterized by their phosphatic elements, which are small, tooth-like structures used for feeding. Arpagodus conodont elements are commonly found in Ordovician period strata.

Arpagodus elements are typically characterized by their laterally compressed and blade-like morphology. They often exhibit denticles, or small tooth-like projections, along their upper margin. The arrangement and shape of these denticles are important diagnostic features used to differentiate between species within the genus.

Due to the scarcity of complete Arpagodus fossils and the disarticulated nature of conodont elements in the fossil record, the precise anatomy and function of the Arpagodus animal remains a subject of ongoing research. Conodont elements are crucial for biostratigraphy, helping to date and correlate rock formations across different regions. The presence of Arpagodus elements can therefore be used to identify Ordovician age sedimentary deposits.