Six-year-old Leo Youngdahl of Eagle was hunting for rocks at Schramm Park State Recreation Area when he pulled something out of the ground that nobody there could immediately explain. The fossil looked larger and strangely fish-like, even though the rock layers at the park are only known to hold invertebrate remains.
Leo discovered the fossil at Schramm Park State Recreation Area, according to klkntv.com. Kelly Ekue, an educator at the park, said the specimen immediately stood out from what staff typically see there. “There are six main types of fossils we find,” Ekue said, per the same report. “This fossil didn’t look anything like any of the species we see.”
Ekue also noted the shape itself threw people off. “It was larger and seemed fish-like, which was ‘fishy’ because we only have invertebrate fossils,” she said, as reported by klkntv.com. That detail mattered because the Schramm Park outcrop is not known to contain vertebrate fossils at all, making a fish-shaped specimen look like a contradiction on its face.
A 200-Million-Year-Old Sea Creature
The mystery resolved once the fossil was identified as a conulariid, an ancient marine animal that lived in eastern Nebraska between 200 million and 500 million years ago, klkntv.com reported. The Nebraska Game and Parks agency revealed Leo's find, putting a name to a discovery that had briefly puzzled park staff.
Conulariids are an odd branch of the fossil record even among paleontologists. According to the University of California Museum of Paleontology, the creatures ranged from the Middle Ordovician period all the way to the Triassic, and their elongated, pyramidal exoskeletons were built from rows of calcium phosphate rods. They lived attached to hard surfaces by a flexible stalk, often clustering together in groups, the museum notes. Despite decades of study, the museum says exactly what conulariids were biologically “is still not settled.”
Why a Fish-Shaped Fossil Seemed So Unlikely
That unresolved classification helps explain why Leo's find looked so out of place to an educator used to Schramm Park's usual lineup. The outcrop there is known for six main fossil types, and a seemingly fish-like shape didn't fit the invertebrate-only pattern staff expected to see, klkntv.com reported.
A separate specimen cataloged by the Missouri Department of Natural Resources shows conulariids have turned up elsewhere in the country as well, including a specimen identified from 330-million-year-old Carboniferous Mississippian St. Louis Limestone in St. Louis.
For now, Leo's discovery stands as a reminder of how much is still being pieced together about life in what is now Nebraska hundreds of millions of years ago. A six-year-old with a sharp eye at a state park near Gretna ended up turning in a specimen that even the educators on-site couldn't place at first glance.
