Geopic of the week: Starfish resting traces

Asteriacites edited

Also known as Asteriacites (just call them starfish traces), these impressions were left by marine invertebrate animals on the sandy floor of a sea that covered northern Arkansas during the late Mississippian period: about 320 million years ago.  These trace fossils were collected from the Batesville Formation, a mostly sandstone unit that outcrops in a thin east-west oriented belt across the Ozark Plateaus.  The sample above was found near the town of Leslie, Arkansas in Searcy County.  I can’t reveal the exact location, as that’s the only place I know of starfish resting traces in Arkansas.  These largely predatory animals, which move using a number of small arms on their points and have a mouth at the center of their bodies, are rarely preserved in the rock record.

Advertisements

One thought on “Geopic of the week: Starfish resting traces

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s