Genus Lamtopyxis Bonnet, 1974

Diagnosis: In dorsal and lateral view like Cyclopyxis puteus but external opening with 3 to 5 teeth. At its base the apertural tube is reinforced by a more or less quadratic organic frame; the internal opening is bordered by a collar. The test is composed of flat mineral particles which are held together by an unstructured organic cement giving the shell a smooth surface as in Cyclopyxis,
All 5 species were described from tropical forest soils. Ref. Bonnet (1974c).
Type species: Lamtopyxis callistoma Bonnet, 1974.

Lamtopyxis
Lamtopyxis spec.
Lamtopyxis
Lamtopyxis spec., with pseudostome made black
Lamtopyxis
Inner construction, just above pseudostome
Lamtopyxis
The same construction, now marked
Lamtopyxis
Reconstruction of the inner construction, based on observations
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