W-10D5 Test: Fossils You Can Find on Oregon Beaches

What is the most common marine fossil found on Oregon's coast?

• Acila conradi

• Katherinella angustri

• Anadara devincta

• Ficus modesta

Which formation is not mentioned as a source of fossils on Oregon beaches?

• Nye mudstone

• Astoria Formation

• Cascade Formation

• Coledo Formation

What type of fossils can be found encased in rock, known as concretions?

• Bivalve Fossils

• Marine Mammal Skeletons

• All of the above

• Wood and Bone Fossils

What is the geological age of the Coledo Formation specimens found on south coast beaches?

• Up to 20 million years old

• 15–20 million years old

• 25–30 million years old

• 10–15 million years old

Which of the following is not a type of bivalve fossil mentioned?

• Dentalium oregonensis

• Chlorostoma pacificum

• Crepidula praerupta

• Anadara devincta

What creates the 'Swiss cheese' look in Teredo wood?

• Sand erosion

• Volcanic activity

• Fossilized casings from the Teredo marine clam

• Erosion by water

Which fossil is known as a 'tusk shell'?

• Calicantharus carlsoni

• Dentalium schencki

• Turritella oregonensis

• Ficus modesta

What type of fossilized wood is frequently found on Oregon beaches?

• Myrtlewood

• Neither A nor B

• Both A and B

• Petrified palm

Where can exhibits of fossils discovered on Oregon’s beaches be found?

• Neither A nor B

• Both A and B

• The Oregon Museum of Science and Industry

• Oregon State University’s Hatfield Marine Science Center

What is not allowed with fossils found on public beaches?

• Photographing them

• Taking them home

• Commercially selling them without a permit

• Studying them