Spengel, J.W. (1893). Die Enteropneusten des Golfes von Neapel. <i>in</i>: Fauna und Flora des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. <em>Herausgegeben von der Zoologischen Station zu Neapel, Berlin. pp. 756.</em> , available online athttps://doi.org/10.5962/bhl.title.11517 page(s): 359 [details]
Swalla, B.J.; van der Land, J. (2024). Hemichordata World Database. Ptychoderidae Spengel, 1893. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=2019 on 2024-11-21
original descriptionSpengel, J.W. (1893). Die Enteropneusten des Golfes von Neapel. <i>in</i>: Fauna und Flora des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. <em>Herausgegeben von der Zoologischen Station zu Neapel, Berlin. pp. 756.</em> , available online athttps://doi.org/10.5962/bhl.title.11517 page(s): 359 [details]
basis of recordvan der Land, J. (2001). Hemichordata, <B><I>in</I></B>: Costello, M.J. <i>et al.</i> (Ed.) (2001). <i>European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels,</i> 50: pp. 336 (look up in IMIS) [details]
additional sourceHayward, P.J. & J.S. Ryland (Eds.). (1990). The marine fauna of the British Isles and North-West Europe: 1. Introduction and protozoans to arthropods. <em>Clarendon Press: Oxford, UK.</em> 627 pp. (look up in IMIS) [details] Available for editors [request]
Present Inaccurate Introduced: alien Containing type locality
Present 