What was one of the biggest dinosaurs?

Answer 1

The is no such thing as a sea dinosaur!
They are known as marine reptiles
But if your asking for the biggest it is Shonisaurus the giant icthyosaur or 'Fish reptile'
The largest plesiosaur is Elasmosaurus
The largest Pliosaur is Kronosaurus
Shonisaurus grew up to 15m long
Elasmosaurus grew up to 14m long
Kronosaurus grew up to 14m long
The largest sea mammal was basilosaurus mistakenly called 'king reptile' It was actually a whale growing up to 15-23m long

Edit: People often mistake plesiosaurs and pliosaurs as being dinosaurs. They are not.

There are however dinosaurs that have semi aquatic lifestiles.

Birds are a type of theropod dinosaur, so that makes Penguins ''sea dinosaurs''.

There are also the extint hesperornithiformes that might of had a similar lifestyle.

Answer 2

The biggest dinosaur of all time, as well as the biggest animal of all time, is the Sauropod Amphicoelias. The largest estimated size for it being 60 meters long, as tall as Godzilla in GMK. Since the remains were fragmentary to begin with, and have not survived to see today, Amphicoelias gets alot of heat, and the runner up, Bruhathkayosaurus, is also controversial but for different reasons. The largest unanimously agreed on dinosaur is Brachiosaurus. I couldn't tell you how big it is, though, it's not the biggest dinosaur so I never bothered to remember. The largest living dinosaur by height is the Ostrich, Struthio, at 2.7 meters. The largest wingspan on a living dinosaur is the Andean Condor, Vultur, which can reach up to 3.1 meters. It's wingspan is larger than an Ostrich is tall. All living dinosaurs are theropods, but the largest theropod of all time was the Spinosaurus, which measured 18 meters long full grown. The dinosaur with the largest wingspan of all time is Argentavis, the Thunderbird, that was close to 8 meters tip-to-tip. The tallest SAUROPOD is Sauroposeidon, an aggrevatingly uncontroversial macronarian known from only four vertebra whose head could reach 17 meters off the ground.

Answer 3

Plateosaurus and Riojasaurus was the largest dinosaurs that lived in the Late Triassic.

Plateosaurus lived 225-190 million years ago (Late Triassic - Early Jurassic). And Riojasaurus lived 225-200 million years ago (Late Triassic).

Answer 4

The giganotosauraus was one of the biggest dinosaurs.

It is believed that the largest dinosaur is the Spinosaurus.

Answer 5

The titanosaur it is a herbivore meaning plant eating the titanosaur is 122 feet long and weighs 70 tons that is as heavy as 10 elephants