Pretty well made for the time actually, sort of even gives you a glimpse of what Jurassic Park could of been because stop-motion was what they were going to do initially before ultimately deciding on CGI.
Actually also reminds of this old book that's even more outdated than the stop-motion film now that I adored in kindergarten (couldn't read but loved the pictures), it was actually my second year of kindergarten because first year was at a different school with a more cruel teacher that gave me problems as someone with autism, parents got pissed off with them and I started another year at another school, the teacher there was far more compassionate and nurturing and as I'm told even took the initiative to learn about autism.
Many many years later when I'm "graduating" public school and progressing to high school she actually caught up with me (she was actually asking about my progress throughout public school) and she gave me a graduation gift, that exact same copy of the dinosaur book with a nice letter written inside, Dinosaurs by John Man (published by Bison Books, 1988 reprint) and to this very day I hold on to it as it has immense sentimental value.