Extinct | Prehistoric Animals

The earliest Prehistoric animals to live were jawless, spineless creatures that roamed the oceans about 540 million years ago. It wasn’t until the Devonian period, 400 million years ago, when the prehistoric creatures grew legs and left the ocean, these are the prehistoric ancestors to all vertebrate creatures on earth today. Once on land, the prehistoric creatures underwent a bunch of different adaptations for running, crawling, flying, and jumping; it was then when the rise of the dinosaurs took place, in the Triassic period about 230 million years ago. Even though the dinosaurs ruled, many small, rodent-like mammals were alive and these small mammals, along with some birds, amphibians, and reptiles survived the mass extinction that wiped out the dinosaurs. Although 90% of the species that have lived on Earth throughout its existence are extinct, most of the creatures that survived this first mass extinction still exist today.

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Extinct Animals Guides
Browse through our curated Extinct Animals Guides for additional categorizations, tips, details, variations, styles, and histories of Extinct Animals. Guides provide additional insights into the unique properties and shared relationships between elements.
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5'6" | 1.67 m
16' | 4.85 m
Ankylosaurus
167.000
485.000
66000
3D
Ankylosaurus
31’-43’ | 9.4-13 m
8’-11’ | 2.4-3.4 m
59’-69’ | 18-21 m
77,000-123,000 lb | 35-56 metric tons
Brachiosaurus
1300.000
340.000
2100.000
56000.000
61000
3D
Brachiosaurus
4’7”-5’7” | 1.4-1.7 m
8’8”-11’6” | 2.7-3.5 m
500-1300 lb | 227-590 kg
Cave Bear
170.000
350.000
590.000
13000
3D
Cave Bear
6’6”-7’ | 198-213 cm
9’10”-10’6” | 3-3.2 m
1190-1543 lb | 540-700 kg
10-15 years
Irish Elk
213.000
320.000
700.000
15.00
19000
3D
Irish Elk
11.5' | 3.5 m
46' | 14 m
Plesiosaurus
350.000
1400.000
14000
3D
Plesiosaurus
19.5' | 6 m
6' | 1.83 m
Pterodactyl
600.000
183.000
116000
3D
Pterodactyl
4’-6’ | 1.22-1.83 m
6’9”-9’6” | 2.06-2.9 m
650-2200 lb | 295-998 kg
Short-Faced Bear
183.000
290.000
998.000
16700
3D
Short-Faced Bear
21.5’ | 6.5 m
5.7’ | 1.7 m
49’-51’ | 15-15.6 m
14,100-15,900 lb | 6.4-7.2 metric tons
Spinosaurus
650.000
170.000
1560.000
7200.000
102000
3D
Spinosaurus
14’ | 4.3 m
6’ | 1.8 m
30’ | 9.1 m
11,700-15,400 lb | 5.3-7 metric tons
Stegosaurus
430.000
180.000
910.000
7000.000
90000
3D
Stegosaurus
20”-27” | 51-69 cm
39”-51” | 99-130 cm
35-65 lb | 16-29 kg
5-7 years (wild); up to 8-11 years (captivity)
Thylacine
69.000
130.000
29.000
11.00
44000
3D
Thylacine
9.5’-10.0’ | 2.9-3 m
6.7’ | 2 m
26’-29.5’ | 7.9-9 m
13,500-26,500 lb | 6.1-12 metric tons
Triceratops
300.000
200.000
900.000
12000.000
97000
3D
Triceratops
17’ | 5.2 m
6’ | 1.8 m
40’ | 12.3 m
18,500-30,800 lb | 8.4-14 metric tons
Tyrannosaurus
520.000
180.000
12300.000
14000.000
94000
3D
Tyrannosaurus
5'6" | 1.67 m
13' | 3.96 m
Velociraptor
167.000
396.000
157000
3D
Velociraptor
Tyrannosaurus | T-Rex
Tyrannosaurus | T-Rex size comparison to a human with dimensions for overall height and length

Tyrannosaurus Rex (T-Rex) was one of the largest predatory dinosaurs that ever existed. Living during the Cretaceous period (68-66 Mya) in the forested river valleys of today’s western North America, Tyrannosaurus is a carnivore popularly known for its large 5’ | 1.5 m skull, ferocious serrated teeth, small useless arms, strong tail, and powerful bipedal legs.

Tyrannosaurus Rex was 40’ (12.3 m) in length, with a height of 17’ (5.2 m), width of 6' (1.8 m), and hip height of 12’-13’ (3.7-4 m). Tyrannosaurus Rex weighed roughly 18,500-30,800 lb (8.4-14 metric tons).

Side, front, back and plan drawings of a Tyrannosaurus | T-Rex
Tyrannosaurus Rex (T-Rex) was one of the largest predatory dinosaurs that ever existed. Living during the Cretaceous period (68-66 Mya), Tyrannosaurus is a carnivore popularly known for its large skull, ferocious serrated teeth, small useless arms, strong tail, and powerful bipedal legs.

Tyrannosaurus Rex was 40’ (12.3 m) in length, with a height of 17’ (5.2 m), width of 6' (1.8 m), and hip height of 12’-13’ (3.7-4 m). Tyrannosaurus Rex weighed roughly 18,500-30,800 lb (8.4-14 metric tons).

Side, front, back and plan drawings of a Tyrannosaurus | T-Rex
Tyrannosaurus | T-Rex
Height:
17’ | 5.2 m
Width:
6’ | 1.8 m
Length:
40’ | 12.3 m
Depth:
Weight:
18,500-30,800 lb | 8.4-14 metric tons
Area:

Height (Hips): 12’-13’ | 3.7-4 m

Period: Cretaceous (68-66 million years ago)

Scientific Name
Tyrannosaurus
Lifespan

Drawings include:
Tyrannosaurus | T-Rex side elevation, front, back, plan

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Irish Elk | Giant Deer
Scaled drawing comparing the size of a Irish Elk (Giant Deer) to a typical person

The Irish Elk (Megaloceros giganteus) is an extinct breed of deer, with a massive body size and large-wide antlers ranging up to 13 feet (4 m). The Irish Elk is also known as the Irish Deer or Giant Deer and is most closely related to a modern-day Moose from body size to similar colors of fur.

Irish Elks ranged from the West of Ireland to the UK, to the South and North of Africa, and to East Siberia and China during the Pleistocene.

Irish Elk (Giant Deer) had standing shoulder heights between 6’6”-7’ (198-213 cm), head-to-body lengths in the range of 9’10”-10’6” (3-3.2 m), and overall weights of 1190-1543 lb (540-700 kg). The lifespan of an Irish Elk is thought to be roughly 10-15 years.

Collection of scaled drawings of the Irish Elk (Giant Deer)
The Irish Elk (Megaloceros giganteus) is an extinct breed of deer, with a massive body size and large-wide antlers ranging up to 13 feet (4 m). The Irish Elk is also known as the Irish Deer or Giant Deer and is most closely related to a modern-day Moose from body size to similar colors of fur.

Irish Elk (Giant Deer) had standing shoulder heights between 6’6”-7’ (198-213 cm), head-to-body lengths in the range of 9’10”-10’6” (3-3.2 m), and overall weights of 1190-1543 lb (540-700 kg). The lifespan of an Irish Elk is thought to be roughly 10-15 years.

Collection of scaled drawings of the Irish Elk (Giant Deer)
Irish Elk | Giant Deer
Height:
6’6”-7’ | 198-213 cm
Width:
Length:
9’10”-10’6” | 3-3.2 m
Depth:
Weight:
1190-1543 lb | 540-700 kg
Area:
Scientific Name
Megaloceros giganteus
Lifespan
10-15 years

Drawings include:

Irish Elk (Giant Deer) side elevation (standing), front (standing)

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Brachiosaurus
Size comparison drawing of the Brachiosaurus to an average human with dimensions shown for length and height

Brachiosaurus was an extremely tall dinosaur that lived during the Late Jurassic period (154-153 Mya). Built for browsing for foliage high above the ground surface, Brachiosaurus is characterized by its long neck and body, small head, and larger forelimbs than hind limbs.

Brachiosaurus is characterized by its long neck and body resulting in a height of 31’-43’ (9.4-13 m), body length of 59’-69’ (18-21 m), and width of 8’-11’ (2.4-3.4 m). A typically Brachiosaurus weighed between 77,000-123,000 lb (35-56 metric tons).

Drawings of a Brachiosaurus from the side, front, back, and aerial
Brachiosaurus was an extremely tall dinosaur that lived during the Late Jurassic with features adapted for browsing for foliage high above the ground surface.

Brachiosaurus is characterized by its long neck and body resulting in a height of 31’-43’ (9.4-13 m), body length of 59’-69’ (18-21 m), and width of 8’-11’ (2.4-3.4 m). A typically Brachiosaurus weighed between 77,000-123,000 lb (35-56 metric tons).

Drawings of a Brachiosaurus from the side, front, back, and aerial
Brachiosaurus
Height:
31’-43’ | 9.4-13 m
Width:
8’-11’ | 2.4-3.4 m
Length:
59’-69’ | 18-21 m
Depth:
Weight:
77,000-123,000 lb | 35-56 metric tons
Area:

Period: Late Jurassic (154-153 million years ago)

Scientific Name
Brachiosaurus
Lifespan

Drawings include:
Brachiosaurus side elevation, front, back, plan

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Stegosaurus
Size comparison drawing with dimensions of a Stegosaurus and an average human

Stegosaurus was a Late Jurassic (155-150 Mya) herbivorous quadrupedal dinosaur known for its array of upright plates on its back and strong spiked tail. Heavily built with short limbs, a small head, and large body, Stegosaurus was a defensive dinosaur that likely foraged for twigs and low hanging fruits.

Stegosaurus had a body length of 30’ (9.1 m), a height of 14’ | 4.3 m, and a width of 6' (1.8 m). Stegosaurus typically weighed between 11,700-15,400 lb (5.3-7 metric tons).

Drawing collection illustrating the front, back, side, and plan profiles of a Stegosaurus
Stegosaurus was a Late Jurassic herbivorous quadrupedal dinosaur known for its array of upright plates on its back and spiked tail.

Stegosaurus had a body length of 30’ (9.1 m), a height of 14’ | 4.3 m, and a width of 6' (1.8 m). Stegosaurus typically weighed between 11,700-15,400 lb (5.3-7 metric tons).

Drawing collection illustrating the front, back, side, and plan profiles of a Stegosaurus
Stegosaurus
Height:
14’ | 4.3 m
Width:
6’ | 1.8 m
Length:
30’ | 9.1 m
Depth:
Weight:
11,700-15,400 lb | 5.3-7 metric tons
Area:

Period: Late Jurassic (155-150 million years ago)

Scientific Name
Stegosaurus
Lifespan

Drawings include:
Stegosaurus side elevation, front, back, plan

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Thylacine | Tasmanian Tiger
Dimensioned comparison drawing of the Thylacine compared to an average person

The Thylacine (Thylacinus cynocephalus), now extinct, was one of the largest known carnivorous marsupials. It is commonly known as the Tasmanian Tiger or the Tasmanian Wolf for their canid-like traits and striped lower back. The species was native to Tasmania, New Guinea, and Australia, but the observations made of the animal were made when it was in captivity, and only limited, anecdotal evidence exists of the Thylacine’s behavior in the wild. The Thylacine had a stiff tail, abdominal pouch similar to a kangaroo’s, dark transverse stripes, and round erect ears covered in short fur. It preyed on kanagroos, wallabies and wombats, and birds and other small animals.

Thylacines have a shoulder height of 20”-27” (51-69 cm), body length between 39”-51” (99-130 cm), and an overall weight in the range of 35-65 lb (16-29 kg). The tail of the Thylacine is 20”-26” (51-66 cm) in length. Thylacines have a typical lifespan of 5-7 years in the wild and up to 8-11 years in captivity.

Set of standing side elevation drawings of the Thylacine
The Thylacine (Thylacinus cynocephalus), now extinct, was one of the largest known carnivorous marsupials. It is commonly known as the Tasmanian Tiger or the Tasmanian Wolf for their canid-like traits and striped lower back. The species was native to Tasmania, New Guinea, and Australia.

Thylacines have a shoulder height of 20”-27” (51-69 cm), body length between 39”-51” (99-130 cm), and an overall weight in the range of 35-65 lb (16-29 kg). The tail of the Thylacine is 20”-26” (51-66 cm) in length. Thylacines have a typical lifespan of 5-7 years in the wild and up to 8-11 years in captivity.

Set of standing side elevation drawings of the Thylacine
Thylacine | Tasmanian Tiger
Height:
20”-27” | 51-69 cm
Width:
Length:
39”-51” | 99-130 cm
Depth:
Weight:
35-65 lb | 16-29 kg
Area:
Tail Length
20”-26” | 51-66 cm
Scientific Name
Thylacinus cynocephalus
Lifespan
5-7 years (wild); up to 8-11 years (captivity)

Drawings include:

Thylacine side elevation (standing), front (standing), side (sitting)

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