To save this word, you'll need to log in.
Peri·sphinc·tes | \ ˌperəˈsfiŋ(k)(ˌ)tēz \
Definition of Perisphinctes
: a genus (the type of the family Perisphinctidae) comprising discoidal ammonites having bifurcating ribs not interrupted on the ventral side and being characteristic of the Upper Jurassic
Keep scrolling for more
Comments on Perisphinctes
What made you want to look up Perisphinctes? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
A More Exception(al) Quiz
- Which of the following words is not a synonym for ‘a young person’?
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Share Perisphinctes