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Updated: Jun 17, 2026
09:45
Harvesting Venom Toxins from Assassin Bugs and Other Heteropteran Insects
Published on: April 21, 2018
The birdlike raptor Sinornithosaurus was venomous
Enpu Gong1, Larry D Martin, David A Burnham
1Department of Geology, Northeastern University, Liaoning 110004, China.
Summary
Some avian dinosaurs, like Sinornithosaurus, may have been venomous, possessing grooved teeth and cranial features similar to venomous lizards. This adaptation likely aided them in hunting early birds in Cretaceous forests.
Area of Science:
- Paleontology
- Vertebrate Zoology
- Evolutionary Biology
Background:
- Dromaeosaurs are a group of feathered dinosaurs closely related to birds.
- Fossil evidence from the Jehol Biota provides insights into Early Cretaceous ecosystems.
Purpose of the Study:
- To investigate the potential venomous nature of avian dromaeosaurs, specifically Sinornithosaurus.
- To propose an ecological model for Sinornithosaurus based on its cranial morphology.
Main Methods:
- Analysis of cranial features of Sinornithosaurus, including dentition and potential venom gland structures.
- Comparative morphology with extant venomous lizards.
Main Results:
- Sinornithosaurus possessed grooved teeth, a possible venom gland pocket, and associated grooves, analogous to venomous lizards.
- These features suggest a venom delivery system in this dromaeosaur.
Conclusions:
- Sinornithosaurus and related dromaeosaurs were likely venomous.
- Venom may have been used to prey on abundant early birds in Early Cretaceous Chinese forests.
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