Ask the Chatbot Games & Quizzes ProCon History & Society Science & Tech Biographies Animals & Nature Geography & Travel Arts & Culture Money Videos
Bellerophon
Table of Contents
Introduction References & Edit History Related Topics
Quizzes
Sea otter (Enhydra lutris), also called great sea otter, rare, completely marine otter of the northern Pacific, usually found in kelp beds. Floats on back. Looks like sea otter laughing. saltwater otters
Animal Group Names
Lion (panthera leo)
Deadliest Animals Quiz
Mute swan with cygnet. (birds)
Match the Baby Animal to Its Mama Quiz
vulture. An adult bearded vulture at a raptor recovery center. The Gypaetus barbatus also known as the Lammergeier or Lammergeyer, is a bird of prey and considered an Old World vulture.
Animal Factoids
Related Questions
Read Next
Japanese spider crab
10 Animals With Evolutionary Traits Plucked Straight Out of a Nightmare
Malayan Leaf Frog - Megophrys nasuta
9 Animals That Look Like Leaves
Skeleton fossil record of ancient reptiles in stone.
Do Fossil Fuels Really Come from Fossils?
Cheetah (Acinonyx jubatus) standing on rock, side view, Masai Mara National Reserve, Kenya
The Fastest Animals on Earth
Big beaver gnawing on limb at river's edge
6 Animal Species that Mate for Life
Discover
Lusitania sinking, illustration from The War of the Nations (New York), December 31, 1919. World War I, WWI. This image is one of three on the page. (See source file for the other two.)
7 of the World’s Deadliest Shipwrecks
American bison (Bison bison) also known as buffalo or plains buffalo on the prairie, western U.S.
What’s the Difference Between Bison and Buffalo?
Cheetah (Acinonyx jubatus) standing on rock, side view, Masai Mara National Reserve, Kenya
The Fastest Animals on Earth
Ruminant. Deer. Red deer. Cervus elaphus. Buck. Stag. Antlers.
9 of the World’s Deadliest Mammals
Image of Antenna galaxy
The Fermi Paradox: Where Are All the Aliens?
Title: Senate Square, St. Petersburg, December 14, 1825: repression of the troop mutiny - watercolor by Carl Ivanovitch Kollman, 1825 depicts Decembrist uprising clashing with cavalry, with spectators watching. (new style December 26, 1825) Europe. Saint
8 of the Largest Empires in History
Thanksgiving Celebration Traditional Dinner Setting Food Concept
Why Is Thanksgiving in the U.S. Celebrated on a Thursday?

Bellerophon

fossil gastropod
verifiedCite
While every effort has been made to follow citation style rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions.
Select Citation Style
Feedback
Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login).
Thank you for your feedback

Our editors will review what you’ve submitted and determine whether to revise the article.

External Websites
Written and fact-checked by
The Editors of Encyclopaedia Britannica
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.
The Editors of Encyclopaedia Britannica
Article History

Bellerophon, extinct genus of gastropods (snails) found as fossils in rocks from the Ordovician Period (488 million to 444 million years ago) to the Triassic Period (251 million to 200 million years ago). Bellerophon is characteristic of the bellerophontids, a large group of snails. The shell of Bellerophon was primitive in that it was coiled with the midline in a single plane; the upper half of the shell was the mirror image of the lower half. In Bellerophon, growth lines angled away from a raised ridge along the midline of the shell. The anterior margins of the shell were flared outward, and they were separated by a narrow slit, called the selenizone.

This article was most recently revised and updated by Richard Pallardy.