Ordovician sponge?
I just pulled this out of a box of old fossils, but I'm not exactly sure where I originally found it. I think it is from the Carter's limestone, middle Ordovician, in the Nashville, TN area. It has a similar shape and size (~2 cm dia) to Hindia, but I have not seen anything else with this distinctive pattern of parallel criss-crossing ridges. Any ideas?
Thanks
The Kieran Davis publication misspelled the genus, it should be 'Selenoides'
Nitecki, M.H., & Rietschel, S. (1985)
Redescription of the holotype of Selenoides iowensis Owen, 1852.
Journal of Paleontology, 59(3):568-571
ABSTRACT- Selenoides Owen, 1852, previously considered to be a junior subjective synonym of Ischadites Murchison, 1839, is a receptaculitid genus endemic to North America, and includes many undescribed species. The holotype of the type specie
