Type species: Trigonopora helvetica Roger & Buge, 1947
This genus includes the species:
| Porometra helvetica canariensis | Cheetham, 1968 | Miocene Pliocene |
Canary Is. Rhodes |
| Porometra helvetica helvetica | (Roger & Buge, 1947) | Miocene | Europe |
| Porometra helvetica thomasi | Cheetham, 1968 | Miocene/Pliocene | Sierra Leone |
| Porometra maleckii | Cheetham, 1968 | Miocene | Austria |
| Porometra tarraconensis | (Reguant, 1960) | Pliocene | Europe |
This information is based upon various sources, but no personal knowledge. I am indebted to the late Alan Horowitz for his compilation, and to Dr. J. Pachut.
I would be grateful for corrections to, or critical reviews of this information. This is not a 'final' version (an impossible ideal), but a working document.
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