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Record: oai:ARNO:505094

AuthorH. Engel
TitleOn Winkleria maastrichtensis nov. gen. et nov. spec. (Echinoidea, Regularia, Stirodonta, Phymosomina, ? Phymosomatidae) from the Upper-Cretaceous (Md) of Maastricht (Limburg, Netherlands)
JournalBeaufortia
Volume10
Year1964
Issue126
Pages207-211
ISSN0067-4745
AbstractCharacterized by a small hemispherical test. Ambulacra with simple primaries; pores in a regular, simple series; nearly every ambulacral primary plate with a tubercle.
Ambulacra hourglass-shaped, as they are narrower at the ambitus, while the interambulacrals are extraordinarily widened there, extra IA plates wedging in from the borders. IA plates low, each with a horizontal series of tubercles. No clear distinction between primary and secondary tubercles, no distinct vertical series of tubercles. Apical system unknown. Peristome rather large. Spines unknown.
Document typearticle
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