Animal Skull Identification Quiz

1. A bird skull has a strongly hooked beak, exceptionally large forward-facing orbits, and left and right ear openings positioned at different heights. Which bird group is most strongly indicated?

2. A medium-sized omnivore skull has a short, broad rostrum, moderate canine teeth, rounded crushing molars, and 40 adult teeth. Which animal is the most likely source?

3. A herbivore skull has no upper incisors and bears paired, permanent, unbranched bony horn cores that angle slightly backward. Which animal is the best match?

4. An adult mammal skull has a long rostrum, a relatively small braincase, and 50 teeth—more than any other native North American land mammal. Which species is it?

5. During a collection survey, you find a long-snouted mammal skull with enlarged canine sockets for tusks and rounded, multi-cusped cheek teeth suited to an omnivorous diet. Which animal should you record?

6. You examine a broad, heavy rodent skull with extremely large orange incisors and cheek teeth marked by strongly folded enamel. It is much larger than a muskrat skull. What is it most likely from?

7. A skull has chisel-shaped incisors, no canine teeth, and a wide gap before the cheek teeth. Which additional observation would best rule out a rabbit and support identification as a rodent?

8. Which animal is most consistent with a small skull that has a short snout, large forward-facing eye sockets, sharp carnassial teeth, and 30 adult teeth?

9. A skull resembles that of a rodent but has a second, much smaller pair of upper incisors directly behind the first pair and lace-like openings in the side of the snout. Which animal is the best match?

10. A mammal skull has no upper incisors, a long gap before the cheek teeth, and paired bony pedicles where branched antlers were attached. Which animal is the best match?

11. You find an elongated, low reptile skull with a broad U-shaped snout, a complete secondary palate, and numerous conical teeth set in sockets. Which animal is the best identification?

12. A predator skull has a long, slender rostrum, prominent canine teeth, and blade-like carnassial teeth adapted for shearing meat. Which animal best fits this combination?

13. A large omnivore skull is heavily built, with powerful canine teeth and broad, relatively flat molars for crushing and grinding. Its carnassial blades are less emphasized than those of a wolf or cougar. Which animal fits best?

14. A toothless bird skull has a long, broad, flattened rostrum that supported a sensitive bill used to strain or gather food in water. Which bird is the most likely match?

15. A marine-animal skull has an elongated rostrum filled with many similar conical teeth, while the nasal opening is shifted far back toward the top of the cranium. Which animal is the best match?

16. A large herbivore skull shows six upper and six lower front incisors, a long toothless gap, and tall cheek teeth with complex folded enamel for grinding. Which animal does it belong to?