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they discovered leg fossils with webbed feet
by studying its duck-like beak, they knew its feet were webbed
they found fossils of this bird's footprint
Correct!
The trackways found near this bird's remains show a pattern made by webbed feet.
Scientific Name: Prebyornis pervetus
Pronunciation: prez-bee-OR-nis per-VET-is
Locality Found: Green River Formation, Wyoming
Age: Early Eocene, 50 million years ago
Size: 1 meter (3 feet) tall
Characteristics: This long-legged bird is a member of the Anseriformes group, whose modern members include ducks and geese.
How do paleontologists know that Presbyornis had webbed feet?
This 50-million-year-old fossil was dug up in Wyoming. How do scientists think this bird died?
volcanic ashfall
sandstorm
flash flood
Correct!
When a volcano erupts, the ash falls and often smothers animals in the area.
These dinosaurs built solitary nests, like modern ducks.
Fact
OR
Fiction
?
Fiction
These dinosaurs probably built their nests in large colonies, like modern shore birds.
Presbyornis ate meals by "filter-feeding." It swooshed its bill in the water to strain out tiny bits of food.
Fact
OR
Fiction
?
Fact
Modern aquatic birds, like flamingos and ducks, also use filter feeding.