†Goniochasma Meek 1864 (clam)
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Bivalvia - Pholadida - Pholadidae
Alternative spelling: Turnus (Goniochasma)
Parent taxon: Martesiinae according to H. E. Vokes 1980
See also Sepkoski 2002 and Warren 1934
Sister taxa: Aspidopholas, Chaceia, Formosulus, Heteropholas, Parapholas, Penitella, Pholadidea, Ramsetia, Xylophomya
Subtaxa: Turnus (Goniochasma) crockfordi
Ecology: stationary boring suspension feeder
Distribution:
• Cretaceous of Canada (2: Saskatchewan collections), the United Kingdom (1), United States (3: Maryland, Missouri, Texas)
Total: 6 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
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