Submission Type
Poster
Abstract
Nowakia are microscopic conical fossils of unknown affinities, possibly mollusks, characterized by an ornament of rings and ridges. Nowakiids have been found and studied in Devonian limestones from the Czech Republic and China, but not specifically from the Genudewa Limestone in western New York. Our goal was to quantify the abundance of nowakiids and other dacryoconarids from the upper and lower beds of the Genundewa limestone. Rock samples were collected at both Eighteen Mile Creek near North Evans, and Jones Bridge Road near Geneseo. Materials were collected using chisels and sledge hammers, then crushed, split, and scanned using optical microscopes and then imaged using a scanning electron microscope. Well preserved specimens were found at Eighteen Mile Creek upper and Jones Bridge Road lower. The Genundewa limestone is composed primarily of smooth Styliolina, a type of dacryoconarid. The nowakiid specimens are unlike other species that have been described.
Recommended Citation
Johnson, Emma; McAneney, Liam; Rayburn, Chloe; Salter, Rory; and Strong, Colleen, "158 - Devonian Nowakia from the Genundewa Limestone, Upper Devonian, Western New York" (2025). GREAT Day Posters. 39.
https://knightscholar.geneseo.edu/great-day-symposium/great-day-2025/posters-2025/39
158 - Devonian Nowakia from the Genundewa Limestone, Upper Devonian, Western New York
Nowakia are microscopic conical fossils of unknown affinities, possibly mollusks, characterized by an ornament of rings and ridges. Nowakiids have been found and studied in Devonian limestones from the Czech Republic and China, but not specifically from the Genudewa Limestone in western New York. Our goal was to quantify the abundance of nowakiids and other dacryoconarids from the upper and lower beds of the Genundewa limestone. Rock samples were collected at both Eighteen Mile Creek near North Evans, and Jones Bridge Road near Geneseo. Materials were collected using chisels and sledge hammers, then crushed, split, and scanned using optical microscopes and then imaged using a scanning electron microscope. Well preserved specimens were found at Eighteen Mile Creek upper and Jones Bridge Road lower. The Genundewa limestone is composed primarily of smooth Styliolina, a type of dacryoconarid. The nowakiid specimens are unlike other species that have been described.
Comments
Sponsored by D. Jeffrey Over