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Journal Article
Published: 01 January 2000
Micropaleontology (2000) 46 (1): 51-71.
...: Palaeoscenidium simplum, Palaeoscenidium hakogasensis, Palaeoscenidium fragilis, Deflantrica furutanii, Pactarentinia intermedia, Pactarentinia igoi, Tlecerina isensis, Ceratoikiscum izumiensis, Palaeopyramidium ramosum and Palaeoumbraculum hidense. GeoRef, Copyright 2004, American Geological Institute. 2000 ...
Journal Article
Published: 23 September 2015
Canadian Journal of Earth Sciences (2015) 52 (10): 863-879.
... Praesaturnalis Li, 1994 and Palaeoumbraculum Amon et al., 1995 as the same genus. Indeed, the species Praesaturnalis octoaculeatus Li, 1994 and Palaeoumbraculum expandum are likely to be synonymes as both are composed of a test consisting of eight curved spines with spinules on the convex side...
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