Here is a sample food chain from a wooded area.

Predation analysis of this food chain

Organism	Fossilization potential according to predators
Raccoon	High, no apparent predators
Worm	Low, eaten by both raccoons and robins
Clover	Low, eaten by both worm and groundhog
Robin	High, no apparent predators
Groundhog	High, no apparent predators
Alder	Low, eaten by white-tailed deer
Mosquitoe	Low, eaten by robins, white-tailed deer and groundhogs
White-tailed deer	High, no apparent predators

 Conclusions: If this were an isolated ecosystem, the most likely fossils found would be those of the raccoon, robin, groundhog, and white-tailed deer.

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