Taxonomic Exploration Engine

Dinosaur Species Directory

Explore cataloged non-avian dinosaurs of the Mesozoic Era. Each entry features verified anatomical dimensions, geological horizons, dietary classifications, and museum holotype provenance.

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Showing 1–24 of 100 documented specimens (Page 1 of 5)

Theropoda

Cretaceous PeriodCarnivore

Acrocanthosaurus

Acrocanthosaurus atokensis Stovall & Langston, 1950

A high-spined North American apex predator famous for hunting sauropods across Early Cretaceous river valleys.

10–11.5 m (32.8–37.7 ft)

4.5–6.5 metric tons (9,921–14,330 lbs)

Theropoda

Cretaceous PeriodCarnivore

Albertosaurus

Albertosaurus sarcophagus Osborn, 1905

A fleet-footed, gracile tyrannosaurid from the Late Cretaceous of western Canada known from prominent multi-individual bonebed associations.

8–9.5 m (26.2–31.2 ft)

1.8–2.5 metric tons (3,968–5,512 lbs)

Theropoda

Jurassic PeriodCarnivore

Allosaurus

Allosaurus fragilis Marsh, 1877

The most abundant apex theropod of Late Jurassic North America, equipped with a kinetic skull and slashing serrated teeth.

8.5–9.7 m (27.9–31.8 ft)

1.8–2.7 metric tons (3,968–5,952 lbs)

Sauropodomorpha

Cretaceous PeriodHerbivore

Amargasaurus

Amargasaurus cazaui Salgado & Bonaparte, 1991

A striking, double-sailed dicraeosaurid sauropod from Argentina sporting parallel rows of tall neck spines.

8.5–10 m (27.9–32.8 ft)

2.5–4.0 metric tons (5,512–8,818 lbs)

Ankylosauria

Cretaceous PeriodHerbivore

Ankylosaurus

Ankylosaurus magniventris Brown, 1908

The definitive armored dinosaur of the Late Cretaceous, encased in bony osteoderms and armed with an osseous tail club.

7.5–8 m (24.6–26.2 ft)

4.8–6.0 metric tons (10,582–13,228 lbs)

Theropoda

Cretaceous PeriodOmnivore

Anzu

Anzu wyliei Lamanna et al., 2014

The 'Chicken from Hell', a gigantic, crested caenagnathid oviraptorosaur from the Hell Creek Formation.

3–3.5 m (9.8–11.5 ft)

200–300 kg (441–661 lbs)

Sauropodomorpha

Jurassic PeriodHerbivore

Apatosaurus

Apatosaurus ajax Marsh, 1877

A colossal, heavily built diplodocid sauropod characterized by thick cervical vertebrae and a whip-like tail.

21–23 m (68.9–75.5 ft)

18.0–28.0 metric tons (39,683–61,729 lbs)

Theropoda

Jurassic PeriodCarnivore

Archaeopteryx

Archaeopteryx lithographica von Meyer, 1861

An iconic stem-avialan from the Late Jurassic Solnhofen limestone exhibiting transitional features bridging non-avian theropods and birds.

0.4–0.5 m (1.3–1.6 ft)

0.5–1 kg (1–2 lbs)

Featured SpecimenSauropodomorpha

Cretaceous PeriodHerbivore

Argentinosaurus

Argentinosaurus huinculensis Bonaparte & Coria, 1993

Among the largest and most massive terrestrial animals known to science, with scaled estimates reaching 65 to 80 metric tons based on fragmentary titanosaur remains.

30–35 m (98.4–114.8 ft)

65.0–80.0 metric tons (143,300–176,370 lbs)

Theropoda

Cretaceous PeriodCarnivore

Australovenator

Australovenator wintonensis Hocknull et al., 2009

The 'cheetah of its time', a lightning-fast megaraptoran predator from the mid-Cretaceous of Australia.

5.5–6 m (18.0–19.7 ft)

300–500 kg (661–1,102 lbs)

Sauropodomorpha

Jurassic PeriodHerbivore

Barosaurus

Barosaurus lentus Marsh, 1890

A massive diplodocid with an extraordinarily long neck and shorter tail than Diplodocus.

24–27 m (78.7–88.6 ft)

18.0–26.0 metric tons (39,683–57,320 lbs)

Theropoda

Cretaceous PeriodPiscivore

Baryonyx

Baryonyx walkeri Charig & Milner, 1986

A specialized fish-eating spinosaurid from Early Cretaceous England sporting a 31-centimeter curved thumb claw.

7.5–9.5 m (24.6–31.2 ft)

1.2–2.0 metric tons (2,646–4,409 lbs)

Ankylosauria

Cretaceous PeriodHerbivore

Borealopelta

Borealopelta markmitchelli Brown et al., 2017

The world's best-preserved dinosaur fossil, a 110-million-year-old nodosaur with intact skin, armor, and stomach contents.

5–5.5 m (16.4–18.0 ft)

1.2–1.5 metric tons (2,646–3,307 lbs)

Featured SpecimenSauropodomorpha

Jurassic PeriodHerbivore

Brachiosaurus

Brachiosaurus altithorax Riggs, 1903

A monumental sauropod with forelimbs longer than hindlimbs, adapted for high-canopy browsing in Late Jurassic North America.

22–26 m (72.2–85.3 ft)

28.0–40.0 metric tons (61,729–88,185 lbs)

Sauropodomorpha

Jurassic PeriodHerbivore

Brontosaurus

Brontosaurus excelsus Marsh, 1879

The iconic 'thunder lizard', resurrected as a valid and distinct genus of diplodocid sauropod in 2015.

20–22 m (65.6–72.2 ft)

15.0–23.0 metric tons (33,069–50,706 lbs)

Sauropodomorpha

Jurassic PeriodHerbivore

Camarasaurus

Camarasaurus supremus Cope, 1877

The most abundant sauropod of Late Jurassic North America, noted for its boxy skull and chisel-like teeth.

15–18 m (49.2–59.1 ft)

12.0–20.0 metric tons (26,455–44,092 lbs)

Theropoda

Cretaceous PeriodCarnivore

Carcharodontosaurus

Carcharodontosaurus saharicus Depéret & Savornin, 1925

The 'shark-toothed lizard', a colossal North African apex predator rivaling Tyrannosaurus in length.

11.5–13 m (37.7–42.7 ft)

6.0–9.0 metric tons (13,228–19,842 lbs)

Theropoda

Cretaceous PeriodCarnivore

Carnotaurus

Carnotaurus sastrei Bonaparte, 1985

A bizarre South American abelisaurid predator with bull-like cranial horns, vestigial forelimbs, and extreme cursorial speed.

7.5–8.5 m (24.6–27.9 ft)

1.3–2.1 metric tons (2,866–4,630 lbs)

Theropoda

Cretaceous PeriodOmnivore

Caudipteryx

Caudipteryx zoui Ji et al., 1998

A ground-dwelling basal oviraptorosaur from Liaoning, China preserving true vaned feathers and gastroliths.

0.8–1 m (2.6–3.3 ft)

3–5 kg (7–11 lbs)

Ceratopsia

Cretaceous PeriodHerbivore

Centrosaurus

Centrosaurus apertus Lambe, 1904

A prominent centrosaurine ceratopsid from Alberta featuring a forward-curved nasal horn and hooked frill spikes.

5.5–6 m (18.0–19.7 ft)

2.0–3.0 metric tons (4,409–6,614 lbs)

Theropoda

Jurassic PeriodCarnivore

Ceratosaurus

Ceratosaurus nasicornis Marsh, 1884

A distinctive Late Jurassic theropod sporting a prominent nasal horn core and a line of small osteoderms along its back.

5.5–7 m (18.0–23.0 ft)

0.5–1.0 metric tons (1,102–2,205 lbs)

Theropoda

Cretaceous PeriodPiscivore

Ceratosuchops

Ceratosuchops inferodios Barker et al., 2021

The 'horned crocodile-faced hell heron', a newly described spinosaurid from the Isle of Wight.

8–9 m (26.2–29.5 ft)

1.5–2.2 metric tons (3,307–4,850 lbs)

Sauropodomorpha

Jurassic PeriodHerbivore

Cetiosaurus

Cetiosaurus oxoniensis Phillips, 1871

The 'whale lizard', the first sauropod dinosaur discovered and named in scientific history.

14–16 m (45.9–52.5 ft)

10.0–15.0 metric tons (22,046–33,069 lbs)

Theropoda

Triassic PeriodCarnivore

Chindesaurus

Chindesaurus bryansmalli Long & Murry, 1995

A basal carnivorous dinosaur from the Chinle Formation of the Petrified Forest National Park.

2–2.4 m (6.6–7.9 ft)

20–35 kg (44–77 lbs)