Marx Big molds vs. small molds

[BrontoScorpio]

Hi guys.
I recently got interested in some vintage dinos for my collection and of course MARX is among the first.
I keep hearing the term "large mold" ,"small mold" and so on, regarding those figures.
I was looking but failed to find here any mentioning of those terms :
does anyone know and have some pictures that compare the same figure of "small mold" to "large mold" -
are there differences in size or apperances and which version is considered better ?
Thank you.

[CityRaptor]

Actually all the mold groups ( expect for revised)  are different animals.

Large:
http://www.dinosaur-toys-collectors-guide.com/large-mold-group.html

Medium:
http://www.dinosaur-toys-collectors-guide.com/medium-mold-group.html

Small:
http://www.dinosaur-toys-collectors-guide.com/small-mold-group.html

Revised:
http://www.dinosaur-toys-collectors-guide.com/revised-mold-group.html

Second Series:
http://www.dinosaur-toys-collectors-guide.com/second-series-mold-group.html

[BrontoScorpio]

Thannks.
now I have some order in all that.

[BlueKrono]

Good info on that site - one of the best out there after this one. The creator's a really friendly dude too.