Tortoise

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tortoise : any of a family (Testudinidae) of terrestrial turtles — Merriam-Webster See also OneLook

Encyclopedia

Tortoises are a family, Testudinidae. Testudinidae is a Family under the order Testudines and suborder Cryptodira. There are fourteen extant families of the order Testudines, an order of reptile commonly known as turtles, tortoises, and terrapins. The suborder Cryptodira is a suborder of Testudines that includes most living tortoises and turtles. Cryptodira differ from Pluerodia in that they lower their necks and pull the heads straight back into the shells, instead of folding their necks sideways along the body under the shells’ marginals. The testudines are some of the most ancient reptiles alive. — Wikipedia

Tortoise (Encyclopædia Britannica)

Tortoises (One Zoom)
Testudines (Catalogue of Life)
Tortoise (WolframAlpha)

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Innovation

Science

Herpetology is the branch of zoology concerned with the study of amphibians (including frogs, toads, salamanders, newts, and caecilians) and reptiles (including snakes, lizards, amphisbaenids, turtles, terrapins, tortoises, crocodilians, and the tuataras). Birds, which are cladistically included within Reptilia, are traditionally excluded here; the scientific study of birds is the subject of ornithology. Thus, the definition of herpetology can be more precisely stated as the study of ectothermic (cold-blooded) tetrapods. Under this definition “herps” (or sometimes “herptiles” or “herpetofauna”) exclude fish, but it is not uncommon for herpetological and ichthyological scientific societies to collaborate. — Wikipedia

Herpetology (Encyclopædia Britannica)

126 Questions with Answers in Herpetology (Research Gate)

Why do Tortoises Live So Long? It’s the Shell (Big Think)

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Preservation

Conservation

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Wildlife Protection Solutions (YouTube Channel)
Wildlife Protection Solutions (Official Website)

Turtle Conservancy (Official Website)
Turtle Conservancy (YouTube Channel)
Turtle Conservancy (Wikipedia)

Tortoises (Defenders of Wildlife)

Library

DDC: 597.92 Tortoise (Library Thing)
Subject: Tortoise (Library Thing)

Subject: Tortoise (Open Library)

LCC: QL 666.C5 Tortoise (UPenn Online Books)
Subject: Tortoise (UPenn Online Books)

LCC: QL 666.C5 Tortoise (Library of Congress)
Subject: Tortoise (Library of Congress)

Subject: Tortoise (WorldCat)

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Participation

Education

MERLOT: Multimedia Educational Resource for Learning and Online Teaching
OER Commons: Open Educational Resources

Community

More News …

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on October 5, 2026 at 3:40 pm
Zebras grazing in a UK park might sound like the stuff of a high-budget Hollywood blockbuster, but new research suggests it could one day be vital in the fight against climate change, and that the British public might not mind as much as you'd think.
Degraded DNA reveals two extinct Galapagos giant...
on August 27, 2026 at 1:40 pm
Using a new combination of computational tools to analyze ancient DNA, Yale researchers have discovered two ancient, extinct giant tortoise lineages that once lived on the Galapagos Islands.