Grand Rapids Public Museum Collections : Artifact : Annularia Concretion [2017.1.417.5]

Comments and Tags

I think this got in the wrong box at some point. I am very sure this is our very own Michigan State Stone: the 'Petosky Stone'; Scientific genus Hexagonaria percarinata. They are from the Devonian period of earth's history. Hexagonaria percarinata only lived between ~Traverse City and Petosky, in an ancient shallow sea that once covered our region. John Vanregenmorter, 11/1/2018

Also, it is Cnideria (Jellyfish and corals). More specifically it is a colonial Rugose coral. It is not a plant. John Vanregenmorter, 11/1/2018

Tags

petosky stone, hexagonaria, misidentified.

Collection Tier:

Tier 3

Fossils
Botany ➔ Annularia Concretion

Identifier:

2017.1.417.5

Description:

Found in Mazon Creek, Illinois.

Exhibit/Program

Science Tuesday: Botany (May 2017)
Science Tuesdays is an ongoing educational experience, offering science programming based on changing themes each month. Science Tuesdays take place throughout the day on Tuesdays at the Museum and include a variety of activities and interactive displays.