Photos / Sounds
What
Delphineis angustataObserver
kerrylhowardDescription
Fossil sample from Miocene Calvert Formation (http://www.mgs.md.gov/geology/fossils/calvert_cliffs_fs.html)
Diatomaceous earth/sandy clay strata (no marl present--no HCl reaction at sample location).
Photos / Sounds
What
Urosolenia eriensisObserver
kerrylhowardDescription
Plankton tow from dock at boat ramp at Orleans Beach, Spirit Lake, IA
Photos / Sounds
What
Genus CyclotellaObserver
kerrylhowardDescription
Marginal costae: 5 in 5um
1 process on valve face
