WoRMS source details

Östergren, H. 1907. Zur Phylogenie und Systematik der Seewalzen. Särtryck ur Zoologiska Studier Tillägnade Professor T. Tullberg, pp. 191-215, Almquist & Wiksells Buchdruckerei-Aktiengesellschaft, Upsala.
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2013-06-07 07:51:19Z
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Enypniastidae Östergren, 1907 accepted as Pelagothuriidae Ludwig, 1893 (original description)
Phyllophoridae Östergren, 1907 (original description)
Phyllophorinae Östergren, 1907 (original description)
Trochostomidae Östergren, 1907 accepted as Molpadiidae J. Müller, 1850 (original description)