Helicoconchus

Helicoconchus is a microconchid genus that occurs in the Lower Permian of Texas. It forms small reef-like bodies of tubes branching from a common origin. The impunctate tubes are greatly elongated for microconchids and have occasional diaphragms with central pits. The tubes branch in two ways: budding from the tube wall and binary fission. They lived in shallow, normal marine environments.^[1]

Helicoconchus elongatus; view of branching aggregation of tubes.

Helicoconchus Temporal range: Early Permian[1] PreꞒ Ꞓ O S D C P T J K Pg N
Helicoconchus elongatus Wilson et al., 2011 from Lower Permian of Texas.
Scientific classification
Kingdom:	Animalia
Phylum:	incertae sedis
Class:	Tentaculita†
Order:	Microconchida†
Genus:	Helicoconchus† Wilson, Yancey and Vinn, 2011