Galleries in black shales: a gallery
The word pun of the title refers to the fossil tunnels preserved in the Genna Muxerru Formation. They have been produced 440 million years ago by unknown organisms within a muddy seafloor.
To know more, check my new paper on the black shale ichnofauna of the Genna Muxerru Formation. Thanks to the publisher, anyone clicking on this link before September 05 will be taken directly to the final version of the paper!