Predator vs. Prey

Source Institution: Smithsonian National Museum of Natural History

Source Exhibit: David H. Koch Hall of Fossils - Deep Time

Source Url: https://naturalhistory.si.edu/visit/virtual-tour/current-exhibits/deep-time-virtual-tour-fossil-list

Source Kind: interpretive_topic_or_panel

Use: research inspiration only; SAGE will write original interpretation

Dossier Status: scientifically_enriched_concept_room_07

Plain Language Explanation: Teeth and claws can show what an extinct animal was capable of doing, but capability is not the same as a documented meal. Paleontologists build predator-prey cases using an evidence ladder. Anatomy suggests possible feeding roles; bite marks, embedded teeth, healed injuries, coprolites and stomach contents can provide progressively more direct evidence of interaction.

Evidence: Carnivorous theropod skulls and teeth establish feeding adaptations but do not identify a particular victim.; Armor and defensive structures document prey adaptations without proving which predators attacked them.; Stomach contents and diagnostic bite marks can provide direct evidence of actual feeding.

Examples From Collection: Gorgosaurus libratus — predator anatomy, not a documented interaction with the displayed herbivores.; Anodontosaurus lambei; Euoplocephalus tutus; Prosaurolophus maximus; Centrosaurus apertus; Tylosaurus proriger — unusually direct feeding evidence because stomach contents are preserved.

Interaction Guard: No terrestrial Room 7 predator and prey are claimed to have interacted merely because they appear in the same room.

Common Misconception: A predator fossil displayed beside a herbivore fossil does not prove that those two individual animals fought or that one species routinely hunted the other.

What Scientists Still Debate: Hunting strategy, prey preference and social behavior often remain inferential even when anatomy establishes carnivory.

Sources: https://naturalhistory.si.edu/education/teaching-resources/paleontology/webinar-expert-online-fossil-preparation-myria-perez; https://www.si.edu/stories/thanksgiving-try-fossil-turducken

Enrichment Method: SAGE original interpretive concept; Cretaceous ecosystems kept geographically and chronologically distinct; direct feeding evidence separated from functional inference; bird-dinosaur relationship represented phylogenetically