Paleontologist sometimes study dinosaur size. They range from the small bee hummimg bird to the giants such as Argentinosaurus and Alamosaurus. Dinosaur records can sometimes change. For example Tyrannosaurus was said to be the largest dinosaur until larger theropods began to be found. The records also do not include false Taxon.
Longest saurischians[]
- Unnamed-[167 ft]
- Barosaurus-[85-164? ft]
- Unnamed-[131 ft]
- Sauroposeidon-[92-131 ft]
- Unnamed-[130 ft]
Heaviest saurischians[]
- Unnamed-[110 t]
- Argentinosaurus-[50-110 t]
- Puertasaurus-[80-100 t]
- Ruyangosaurus-[50-100 t]
- Alamosaurus-[30-100 t]
[]
- ''Nanoraptor''-[2-2.4 in]
- Unnamed-[8 cm]-possibly a Crocodilia
- Scansoriopteryx-[12 cm]
- Epidexipteryx-[9.8-11.8 in]
- Eosinopteryx-[12 in]
[]
- Scansoriopteryx-[4 oz]
- Parvicursor-[4.8-5.7 oz]
- Unnamed-[7 oz]
- Zhongianosaurus
- Epidexipteryx-[3.9-13.8 oz]
Largest ornithisicans[]
- Unnamed-[52-66 ft]
- Shantungosaurus-[48-61 ft]
- Edmontosaurus annectens-[43-50 ft]
- Magnapaulia-[41-50 ft]
- Hysibema-[49 ft]
Heaviest ornithisicans[]
- Shantungosaurus-[9.9-22.5 t]
- Iguanodon-[1-15.3 t]
- Edmontosaurus annectens-[3-15 t]
- Triceratops-[5-13.5 t]
- Titanoceratops-[4.7-10.8 t]
Shortest ornithisicans[]
- Microcephale-[1.2 ft]
- Echinodon-[2 ft]
- Pegomastax-[2 ft]
- Wannanosaurus-[2-2.0 ft]
- Microceratus-[2.0 ft]
Lightest ornithisicans[]
- Fruitadens-[1.1-2 ib]
- Aquilops-[3.3 ib]
- Liaoceratops-[4.4 ib]
- Yamaceratops-[4.4 ib]
- Scutellosaurus-[6.6 ib]