Rhynchonellata - Orthida - Draboviidae
Alternative combinations: Dalmanella subaequata, Orthis subaequata, Pianodema subaequata
Belongs to Pionodema according to R. Li and P. Copper 2006
See also Cooper 1956, Hall and Clarke 1892, Temple 1987 and Wilson 1949
Sister taxa: Pionodema aberstadti, Pionodema cooperi, Pionodema costata, Pionodema dubia, Pionodema girvaniensis, Pionodema hypermeca, Pionodema minuscula, Pionodema opima
Ecology: stationary epifaunal suspension feeder
Distribution:
• Ordovician of Canada (1: Quebec collection), the United Kingdom (1), United States (30: Georgia, Illinois, Iowa, Minnesota, Missouri, Tennessee, Virginia)
Total: 32 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.