Tetractinella

Table of Contents

Introduction References & Edit History Related Topics

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Tetractinella: Related Content

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

Topics

Tetractinella trigonella Triassic Period lamp shells fossil Atrypa Neospirifer Chonetes Mucrospirifer Dielasma Rensselaeria Platystrophia Tropidoleptus Leptodus Eospirifer

Quiz

Mute swan with cygnet. (birds)

Match the Baby Animal to Its Mama Quiz

Lion (panthera leo)

Deadliest Animals 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