Britton, J. C., and B. Morton. 1989. Shore Ecology of the Gulf of Mexico. University of Texas Press, Austin. 387 pp.
Fisher, W. K. 1947. New genera and species of echiuroid and sipunculan worms. Proceedings of the United States National Museum 97: 351–372, pls. 8–15.
Henry, C. A. 1976. The commensal clam, Paramya subovata (Bivalvia: Myidae) and Thalassema hartmani (Echiuroidea) off Galveston, Texas. The Nautilus 90: 73–74.
New record for east northeast region of Gulf of Mexico; USNM 081982, 97619, 97620, and 148582; ID by J. Pilger; differs from T. philostracum in having one pair of nephridia.
Pilger, J. F. 2009. Echiura of the Gulf of Mexico, Pp. 797–802 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Biodiversity. Texas A&M Press, College Station, Texas.
Harte Research Institute for Gulf of Mexico Studies. 2016. GulfBase: Resource Database for Gulf of Mexico Research, Education, and Management. Texas A&M University-Corpus Christi. World Wide Web electronic publication. http://www.gulfbase.org, [Today's Date].