Description:Celliforma is a vertically oriented subcylindrical to flask-shaped burrow or boring with a rounded termination; in burrows a remanent of a cap is visible as a ring within the burrow. Probable tracemaker was a bee, which either burrowed into a sandy substrate or bored into wood and used the structure as a brooding chamber. Borings in wood are oriented perpendicular with respect to the wood surface.
Age: Triassic
Formation: Chinle
Location: Arizona, USA
Collector: S. Hasiotis
Photographer: A. J. Martin
Comments: This top view of cf. Celliforma shows a close association of several burrows, suggesting a gregarious nature and socialization for bees during the Late Triassic (long before flowering plants appear in the fossil record).
Age: Triassic
Formation: Chinle
Location: Arizona, USA
Collector: S. Hasiotis
Photographer: A. J. Martin
Comments: Side view of cf. Celliforma shown in previous image.
Age: Triassic
Formation: Chinle
Location: Arizona, USA
Collector: S. Hasiotis
Photographer: A. J. Martin
Comments: Close association of burrows suggests social behavior.
Age: Triassic
Formation: Chinle
Location: Arizona, USA
Collector: S. Hasiotis
Photographer: A. J. Martin
Comments: Here cf. Celliforma shows a close association of many borings in petrified wood, suggesting a gregarious nature and socialization for bees during the Late Triassic (long before flowering plants appear in the fossil record).
Age: Triassic
Formation: Chinle
Location: Arizona, USA
Collector: S. Hasiotis
Photographer: A. J. Martin
Comments: Both side and top views are exposed here of individual borings; note how borings occupy a semicircular to oval, suggesting a colonial structure.
