Pedunculotheca

Pedunculotheca is a genus of orthothecid hyolith known from the Chengjiang biota of China, notable for its possession of a pedunculate attachment structure likened to the brachiopod pedicle.^[1]

Pedunculotheca Temporal range: Chengjiang PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Kingdom:	Animalia
Class:	†Hyolitha
Order:	†Orthothecida
Genus:	†Pedunculotheca
Species:	†P. diania
Binomial name
†Pedunculotheca diania Sun, Zhao & Zhu 2018[1]

On account of this pedicle and its flattened larval shell, it is reconstructed as the earliest diverging hyolith, and a model for the ancestral morphology of this lineage of stem-group brachiopods.^[1]