MilDragon 1 and 2 works in Poser. So is SubDragon. There are several morphs for those. 3 does not have a Poser version.

And there is this one: https://www.renderosity.com/mod/bcs/dragonz/122073/

Specifically for Poser, with its texture extensions: https://www.renderosity.com/mod/bcs/dragonz-colors-of-the-wyrm---black-gold-green/122074/