Predatorial Borings in Late Precambrian Mineralized Exoskeletons
Abstract
The late Precambrian tube-forming Cloudina, the earliest known animal to produce a mineralized exoskeleton, shows evidence of having been attacked by shell-boring organisms. Of more than 500 tubes from Shaanxi Province, China, 2.7% have rounded holes 40 to 400 micrometers in diameter. The relation between the size of the holes and the width of the bored tubes suggests that the attacking organism was a predator, selecting its prey for size. If true, this would be the oldest case of predation in the fossil record and would support the hypothesis that selection pressures from predation was a significant factor in the evolution of animal skeletons around the Precambrian-Cambrian boundary.
- Publication:
-
Science
- Pub Date:
- July 1992
- DOI:
- 10.1126/science.257.5068.367
- Bibcode:
- 1992Sci...257..367B