Punctaconchus

Punctaconchus Temporal range: Mid Jurassic PreꞒ Ꞓ O S D C P T J K Pg N
Punctaconchus ampliporus Vinn and Taylor, 2007 from the Bathonian, White Limestone Formation, Foss Cross Quarry, Gloucestershire, UK.
Scientific classification
Kingdom:	Animalia
Phylum:	incertae sedis
Class:	Tentaculita†
Order:	Microconchida†
Genus:	Punctaconchus† Vinn and Taylor, 2007

Punctaconchus is a genus of microconchid tubeworms. It was the last genus of microconchids, and the only genus to exist beyond the Triassic. Their tubes have large pores (punctae) penetrating the tube wall. Tubes lumen is covered by ripplemark−like transverse ridges. Punctaconchus occurs in the Middle Jurassic of England, France^[1] and Poland.^[2]

References

1. Vinn, O.; Taylor, P.D. (2007). "Microconchid tubeworms from the Jurassic of England and France". Acta Palaeontologica Polonica. 52 (2): 391–399. Retrieved 2012-11-24.
2. Zatoń, M.; Taylor, P.D. (2009-12-31). "Microconchids (Tentaculita) from the Middle Jurassic of Poland". Bulletin of Geosciences: 653–660. doi:10.3140/bull.geosci.1167. ISSN 1802-8225.