Planhoogenraadia
P. gracilis – from Bonnet, 1977

Genus Planhoogenraadia Bonnet, 1977

Diagnosis: Test bilaterally symmetrical; aperture more or less covered by a visor-like extension of the dorsal surface, 2 lateral grooves at the junction of visor and belly. In contrast to Hoogenraadia ventral side always flat; this is interpreted as an adaptation to the living in soil as in Plagiopyxis or certain Centropyxis. Pseudostome usually semi-circular or elongated oval, located back into the test.

Type species: Planhoogenraadia acuta Bonnet, 1977.

Eight species.

Ecology: forest soils often on calcareous bedrock.

Hoogenraadia distribution
Distribution of Hoogenraadia (red), Planhoogenraadia (yellow) and Geoplagiopyxis (green) – modified after Smith et al. 2008.
Planhoogenraadia
P. alta – from Bonnet, 1984
Planhoogenraadia
P. acuta – from Bonnet, 1977
Planhoogenraadia
P. bonneti
Planhoogenraadia
P. cantabrica – from Bonnet, 1984
Planhoogenraadia
P. asturica – from Bonnet, 1984
Planhoogenraadia
P. gibbosa – from Bonnet, 1984
Planhoogenraadia
P. elegans
Planhoogenraadia
P. daurica – from Bobrov, 2001
Planhoogenraadia
P. gracilis – from Bonnet, 1984
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