Amber inclusions not only of flora, but also of fauna are originated when specimens became trapped and entered in contact with the viscose resin that converts itself into a pasty mass. Such a pasty mass later on started to harden progressively and became petrified into the stone.  Through this process, Amber inclusions were formed million years ago.

Following is an incomplete list of the variety of inclusions that can found in Dominican Amber:

• Insects, Non-insects and Vertebrates Ants:

Termites
Beetles
Bees
Mosquitoes
Grasshoppers
Planthoppers
Leafhoppers
Cicadas
Aphids
Flees
Fireflies
Ticks
Butterflies, Moths
Springtails -Collembola-
Crickets
Cockroaches
Centipedes
Millipedes
Barklice
Thrips
True Bugs
Lacewings
Dusty-wings
Beetles
Scorpions / pseudo-scorpions
Spiders
Webspinners
Mantises
Flies
Fireflies
Wasps
Small (Gecko) Lizards
Frogs

Source: Les secrets de L'ambre Dominicaine

• Plants and other flowers:

Mushroom caps
Seeds
Leaves
Stems
Animal hair
Bird feathers
Spider webs
Eggs, Larvae and Pupae

Source: Les secrets de L'ambre Dominicaine