Bivalvia - Pandorida - Lyonsiidae
Synonym: Spinolyonsiellidae Scarlato and Starobogatov 1983
Parent taxon: Pandoroidea according to J. G. Carter et al. 2011
See also Bieler and Mikkelsen 2006, Bouchet et al. 2010, Coan et al. 2000, Nevesskaja 2009, Newell 1965 and Vokes 1980
Sister taxa: Adelosiphonia, Laternulidae, Pandoridae
Subtaxa: Lyonsia Mytilimeria Spinolyonsiella
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Quaternary of Canada (4: New Brunswick, Nunavut collections), Greenland (2), United States (12: California, Maine, Maryland, Virginia)
• Pliocene of Belgium (5), Pakistan (1), United States (2: California), Venezuela (1)
• Miocene of Belgium (2), Germany (3), the Netherlands (1), United States (1: Alaska)
• Oligocene of Denmark (1)
• Eocene of the United Kingdom (1), United States (4: California, Texas)
• Paleocene of Denmark (4)
• Jurassic of France (2)
Total: 46 collections including 51 occurrences