During excavation work at the Mile-and-a-Half Resthouse, as part of the Transcanyon Waterline project, a member of the NPS monitoring team unearthed a rare and entirely new fossil for Grand Canyon and the Hermit Formation. One of the park’s research partners at UC-Berkeley has identified it as an Equisetalean strobilus.
This fossil is approximately 290 million years old and represents the spore-producing reproductive organ of an extinct species of horsetail known as Sphenophyllum. While Sphenophyllum fossils are not uncommon in the Hermit Formation, discovering the fruiting bodies is unprecedented.
The public affairs office is in the process of coordinating public communication efforts including a news release to announce this and other recent paleontological discoveries. Stay tuned for more updates!
