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Scientific name
Dimetrodon grandis
Sections Dimetrodon Skull
Dimetrodon Tail
Dimetrodon Torso
Period(s) Early Permian
Length 11.5 feet (3.5 meters)
Selling price Skull: 5,500 Bells
Tail: 4,500 Bells
Torso: 5,000 Bells
Main appearances
Name in other languages

Japanese ディメトロドン
Simplified Chinese 异齿龙
French Dimétrodon
Spanish Dimetrodonte
Italian Dimetrodonte
Russian Диметродон

Korean 디메트로돈
Traditional Chinese 異齒龍
Quebec French Dimétrodon
Latin American Spanish Dimetrodonte
German Dimetrodon
Dutch Dimetrodon

The Dimetrodon is a three-part fossil that can be donated to the museum in Animal Crossing: Wild World, Animal Crossing: City Folk, Animal Crossing: New Leaf, and Animal Crossing: New Horizons.

Completing at the Museum[edit]

In Wild World[edit]

"It lived early on, when dinosaurs first began roaming the earth, wot? And actually, to be quite accurate, it's not even a real dinosaur at all! As we know, dinosaurs were cold-blooded and could not change body temperature. But the dimetrodon could! It used its distinctive back to control heat! For this reason, it is considered what we call a "mammalian reptile," wot? Ah. Hoo. Yes, sorry. I got rather blabby, there. I got heated up, hoo!"

In City Folk[edit]

"...And with that, the dimetrodon is complete! Hoo, what a spectacle! The dimetrodon was from a period early in the history of the dinosaurs, eh wot? In point of fact, it's not even a real dinosaur! That's because it could regulate body temperature, unlike other dinosaurs. The dimetrodon did so by using its distinctively shaped back... Indeed, and that is why it's considered what some call a 'mammalian reptile'!"

In New Leaf[edit]

"Despite its reptilian appearance, the dimetrodon was not actually a dinosaur, as you'd assume. It was, in fact, a mammal-like reptile that went extinct before the first dinosaurs appeared. It had knife-like teeth for slicing as well as smaller ones for crushing. The large fan on its back was used to regulate body temperature-- an important feature of the time."

In New Horizons[edit]

When donating to Blathers or selecting "Tell me about this!" in New Horizons, he will provide the following information about the fossil:

"Ah, yes. Dimetrodon. Not actually a dinosaur, despite what some people may tell you. This REPTILE—not dinosaur is most famous for the large sail-like organ on its back. Said organ was likely useful in regulating its non-dinosaur—body temperature. Reptiles are known to be cold- blooded, but there is some debate as to whether dinosaurs were too. Dimetrodon assuredly was."

The Dimetrodon can be found in the second room of the fossil exhibit in the museum.

Real-world information[edit]

Dimetrodon, meaning "two measures of teeth", is an extinct genus of non-mammalian synapsids that lived during the Cisuralian (Early Permian), around 295–272 million years ago (Ma). It is a member of the family Sphenacodontidae. The most prominent feature of Dimetrodon is the large neural spine sail on its back formed by elongated spines extending from the vertebrae. It walked on four legs and had a tall, curved skull with large teeth of different sizes set along the jaws. Most fossils have been found in the southwestern United States, the majority coming from a geological deposit called the Red Beds of Texas and Oklahoma. More recently, fossils have been found in Germany. Over a dozen species have been named since the genus was first described in 1878.

Dimetrodon is often mistaken for a dinosaur or as a contemporary of dinosaurs in popular culture, but it became extinct some 40 million years before the first appearance of dinosaurs. Reptile-like in appearance and physiology, Dimetrodon is nevertheless more closely related to mammals than to modern reptiles, though it is not a direct ancestor of mammals. Dimetrodon is assigned to the "non-mammalian synapsids", a group traditionally called "mammal-like reptiles". This groups Dimetrodon together with mammals in a clade (evolutionary group) called Synapsida, while placing dinosaurs, reptiles and birds in a separate clade, Sauropsida. Single openings in the skull behind each eye, known as temporal fenestrae, and other skull features distinguish Dimetrodon and mammals from most of the earliest sauropsids. It was a carnivore and had a fan to regulate body temperature.

As a furniture item[edit]

Name HRA Points Feng Shui Genre Size (sq)
Dimetrodon Skull 1,000 Brown (x2) Old School (WW)
Retro (CF)
Quirky (NL)
Dimetrodon Tail 1,000 Brown (x2) Old School (WW)
Retro (CF)
Quirky (NL)
Dimetrodon Torso 1,000 Brown (x2) Old School (WW)
Retro (CF)
Quirky (NL)