Largest dinosaurs

Longest Theropods

 * 1) Spinosaurus aegyptiacus : 15 - ?18 m (49.25 - ?59.0 feet)
 * 2) Carcharodontosaurus saharicus : 12 - 13.6 meters (39.4 - 44.8 feet)
 * 3) Mapusaurus rosae : 11.5-13.6 meters (38.0 - 44.8 feet)
 * 4) Giganotosaurus carolinii : 12.4 - 13.2 m (40.9 - 43.5 feet)
 * 5) Tyrannosaurus rex: 10 - 12.3 m (32.0 - 40.5 feet)
 * 6) Tyrannotitan chubutensis : 11.4-12.2 m (37.6-40.2 feet)
 * 7) Epanterias amplexus : 11.4 - 12.0 m (37.6-39.6)

Heaviest Theropods

 * 1) Spinosaurus : 9 - 13 t
 * 2) Tyrannosaurus : 6.2 - 8.4 t
 * 3) Giganotosaurus  : 6.8 - 8.2 t
 * 4) Carcharodontosaurus  : 6.1 - 8.2 t
 * 5) Mapusaurus : 5.6 - 7.7 t

Longest Sauropods
For purpose of reliability, ichnotaxa such as the Broome titanosaur and Parabrontopodus are excluded from this list.
 * 1) Amphicoelias : 60 m (196.9 feet)
 * 2) Puertasaurus : 32 - 40 m (105.0 - 131.1 feet)
 * 3) Supersaurus  : 42 m (137.75 feet)
 * 4) Argentinosaurus : 35 m (114.75 feet)
 * 5) "Diplodocus" hallorum : 35 m (105 feet)
 * 6) Sauroposeidon proteles : 25 - 28 m (82.0 - 91.9 feet)

Heaviest Sauropods

 * 1) Amphicoelias fragillimus : 120 - 150 t
 * 2) Puertasaurus reuili : 75 - 80 t
 * 3) Argentinosaurus huinculensis : 73 - 80 t
 * 4) Alamosaurus sanjuanensis : 60 - 75 t
 * 5) Futalognkosaurus dukei : 60 - 75 t
 * 6) Sauroposeidon proteles : 60-70 t
 * 7) Mamenchisaurus sinocandorum : ?55 - ?65 t
 * 8) Paralititan stromeri : 40 - 59 t
 * 9) Turiasaurus riodevensis : 40 - 50 t
 * 10) "Diplodocus" hallorum  : 32 - 40 t