Using this description, you can crochet a plush triceratops in a shell with a  crochet hook. Any plush  yarn and suitable hook are suitable for amigurumi. You need two colors for one toy: the main one and an additional one for the horns, nose, and shell. You can make a boy triceratops in a purple shade or a girl triceratops in pink. The horns are crocheted directly onto the head.

Materials and Tools:

Plush yarn: main color (quarter) and white (for the egg and horns)
Hook 4 mm
6 mm toy eyes
Stuffing for toys
Markers for knitting
Pins
Needle for sewing parts
Scissors
Abbreviations:

KA — amigurumi ring
ch — chain
sl st — slip stitch
sc — single crochet
inc — increase
dec — decrease
(…) x n — repeat n times
Amigurumi Mini-Dino in an Egg Crochet Pattern