Leptodus

Table of Contents

Introduction References & Edit History Related Topics

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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

Ahura Mazda - relief of the Zoroastrian god Ahura Mazda at the ancient ruins of Persepolis in Iran. Also known as Ormazd Zoroastrianism,

Which Religion Is the Oldest?

Black widow spider

9 of the World’s Deadliest Spiders

International currencies, money, various banknotes, currency

A Brief (and Fascinating) History of Money

The Lost Colony of Roanoke, North Carolina, where 115 people mysteriously disappeared c. 1590. John White discovers the word Croatoan carved onto a tree upon his return to the deserted Roanoke Colony in 1590

The Lost Colony of Roanoke

pg 229Nazi parade features a banner proclaiming, "Death to Marxism."The possibility of a peaceful Germany after World War I was precluded entirely by the terms of the Versailles Treaty and theintransigent hostility of France and England. Stripped of indu

Were the Nazis Socialists?

Hijacked United Airlines Flight 175 from Boston crashes into the south tower of the World Trade Center and explodes at 9:03 a.m. on September 11, 2001 in New York City. The crash of two airliners hijacked by terrorists loyal to al Qaeda leader Osama bin..

All 81 References in Fall Out Boy’s “We Didn’t Start the Fire,” Explained

African Americans demonstrating for voting rights in front of the White House as police and others watch, March 12, 1965. One sign reads, "We demand the right to vote everywhere." Voting Rights Act, civil rights.

Timeline of the American Civil Rights Movement

Leptodus: Related Content

Written and fact-checked by The Information Architects of Encyclopaedia Britannica

Topics

lamp shells fossil Tetractinella Atrypa Neospirifer Chonetes Mucrospirifer Dielasma Rensselaeria Platystrophia Tropidoleptus Strophomena

Quiz

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

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

Lion (panthera leo)

Deadliest Animals Quiz

Mute swan with cygnet. (birds)

Match the Baby Animal to Its Mama Quiz