Jaekelocarpus

Jaekelocarpus is a genus of mitrate stylophoran known from the Morrowan age of the Golf Course Formation, southern Oklahoma, US.^[1] It possessed two billaterally symmetrical complexes of four internal bars. The morphological similarity of these structures to the gill bars of cephalochordates and enteropneusts is considered a likely indicator of their homology.^[2][3]

Jaekelocarpus Temporal range: Pennsylvanian (Morrowan), 318.1–314.6 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Three-dimensional reconstruction of Jaekelocarpus oklahomensis (UWBM74305) with internal bars and bar-like structures (violet)
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	†Stylophora
Order:	†Mitrata
Family:	†Jaekelocarpidae
Genus:	†Jaekelocarpus Kolata et al., 1991
Species:	†J. oklahomensis
Binomial name
†Jaekelocarpus oklahomensis Kolata et al., 1991