List of species in The Land Before Time

Clubtails

 * Ankylosaurus: Kosh

Longnecks

 * Amargasaurus
 * Apatosaurus: Ali's Mother, Ali, Bron, Grandma and Grandpa Longneck, Littlefoot's Mother, Littlefoot, Pat, Rhett, Saro, etc.
 * Argentinosaurus
 * Barosaurus
 * Brachiosaurus: Shorty, etc.
 * Camarasaurus
 * Cetiosaurus
 * Diplodocus: Dara, Doc, Mrs. Mama.
 * Saltasaurus
 * Supersaurus: Sue.
 * Tinysauruses:
 * Mussaurus: Big Daddy, Chatter, Lizzie, Rocky & Dusty, Skitter, etc.
 * Ultrasauros: Sue's Boyfriend.

Sharpteeth

 * Dimetrodon
 * Postosuchus
 * Belly Draggers:
 * Deinosuchus: Dil
 * Rutiodon
 * Sarcosuchus

Thicknoses

 * Pachyrhinosaurus: Mr. Thicknose

Threehorns

 * Triceratops: Topps, Tria, Cera, Tricia, Dinah & Dana etc.
 * Chasmosaurus

Tickly Fuzzies

 * Ceratogaulus: Lydia, Milo, Plower, etc.
 * Megazostrodon: Tickles
 * Multituberculate: Skip

Spiketails

 * Stegosaurus: Spike, Tippy, Tippy's Mother, Spiketail Leader, etc.
 * Kentrosaurus

Crawlers

 * Burrowing reptile
 * Diphydontosaurus
 * Eryops
 * Hylonomus: Sailbacked lizard
 * Karaurus
 * Kuehneosaurus
 * Paramacellodus
 * Sailbacked lizard

Hoppers

 * Palaeobatrachus
 * Triadobatrachus

Others

 * Camptosaurus
 * Colossochelys
 * Edaphosaurus
 * Edmontonia
 * Edmontosaurus
 * Hylaeosaurus
 * Iguanodon
 * Monoclonius
 * Moschops
 * Nodosaurus: Nod
 * Ouranosaurus
 * Scolosaurus: Rooter
 * Scutellosaurus
 * Scutosaurus
 * Styracosaurus

Domeheads

 * Pachycephalosaurus
 * Stegoceras

Egg Stealers

 * Claw Hands
 * Struthiomimus: Ozzy & Strut

Fast Runners

 * Oviraptor: Ruby's Parents, Ruby's Siblings, Ruby.

Flyers

 * Archaeopteryx: Avie.
 * Cearadactylus: Sierra.
 * Dimorphodon
 * Pteranodon: Mama Flyer, Petrie's Siblings, Petrie, Pterano, Swooper.
 * Quetzalcoatlus
 * Rhamphorhynchus: Rinkus, Sharptooth Flyer.
 * Sordes

Gliders

 * Microraptor: Guido.

Hidden Runners

 * Troodons: Hidden Runner.

Hollowhorns

 * Corythosaurus
 * Lambeosaurus
 * Parasaurolophus

Rainbow Faces

 * Gallimimus.

Sharp Beaks

 * Ichthyornis: Ichy.

Sharpteeth

 * Albertosaurus: Sharptooth (The Big Freeze).
 * Allosaurus: Brown Sharptooth (The Secret of Saurus Rock).
 * Baryonyx: Sharpteeth (The Wisdom of Friends)
 * Carnotaurus: Horned Sharptooth (Journey of The Brave)
 * Coelophysis
 * Compsognathus
 * Daspletosaurus: Cool Gray Sharptooth, Green Sharptooth, Orange-Brown Sharptooth.
 * Giganotosaurus: Plated Sharptooth (The Mysterious Island).
 * Metriacanthosaurus
 * Spinosaurus: Sharptooth (The Great Day of the Flyers).
 * Torvosaurus
 * Tyrannosaurus: Chomper, Chomper's Father, Chomper's Mother, Meanest Sharptooth, Red Claw, Sharptooth (character).
 * Yutyrannus: Featherhead Sharpteeth (Journey of The Brave)

Fast Biters

 * Achillobator: Sharpteeth (The Stone of Cold Fire).
 * Deinonychus: Mama Fast Biter, Screech & Thud, Sharpteeth (Invasion of the Tinysauruses).
 * Velociraptor: Sharpteeth (The Time of the Great Giving).

Swimmers

 * Camptosaurus
 * Bigmouths:
 * Edmontosaurus
 * Maiasaura: Mrs. Maia.
 * Muttaburrasaurus : Mutt's Father, Mutt.
 * Saurolophus: Ducky's Siblings, Ducky, Mama Swimmer, Papa Swimmer, etc.

Yellow Bellies

 * Beipiaosaurus: Loofah & Doofah, Foobie, ect.

Others

 * Heterodontosaurus
 * Hypsilophodon : Hyp's Father, Hyp.
 * Iguanodon
 * Microceratus: Great Hideous Beast.
 * Ouranosaurus
 * Plateosaurus

Swimming Sharpteeth

 * Eusthenopteron (Maybe)
 * Liopleurodon
 * Metriorhynchus
 * Megalodon
 * Mosasaurus
 * Nothosaurus

Others

 * Archelon: Archie.
 * Crassigyrinus
 * Elasmosaurus: Elsie.
 * Ophthalmosaurus: Mo.
 * Plesiosaurus
 * Cryptoclidus

Swimmers

 * Starfish
 * Ammonite
 * Jellyfish
 * Sturgeon
 * Sea Horse
 * Coelacanth (Small from The Land Before Time IV: Journey Through the Mists and Big from The Land Before Time IX: Journey to Big Water)
 * Eusthenopteron (Or maybe an Swimming Sharpteeth)

Creepers

 * Crab: Scuttle, Crunch, etc.
 * Locust
 * Dragonfly
 * Spider
 * Butterfly