From what I can think of
--Land creatures--
Triceratops and other creatures with its animation: Walrus
Spinosaurus and other creatures with its animation: Elephant
Stegosaurus and other creatures with its animation: Polar bear
Therizinosaurus and other creatures with its animation: Leopard
Iguanodon: Elephant
Brachiosaurus: Bull
Indominus: Lion and elephant
Sarcosuchus and other creatures with its animation: Crocodilians
--Aquatics--
Dakosaurus and other creatures with its animation: Leopard
Tylosaurus and other creatures with its animation: Elephant, wild boar, and walrus
Plesiosaurus and other creatures with its animation: Elephant
--Cenozoics--
Woolly mammoth and other elephants: Elephant
Smilodon and other creatures with its animation: Tiger and bison
Entelodon and other creatures with its animation: Bull
Elasmotherium and other creatures with its animation: Rhino, bison, and wild boar
Indricotherium and other creatures with its animation: Walrus and elephant
Eremotherium and Megatherium: Wild boar
Andrewsarchus and other creatures with its animation: Wolf
Titanoboa and other creatures with its animation: Snake
Can anyone else think of the sounds that were used for them?