Graphularia wetherelli is one of the species of coral found in the London Clay, an example can be seen below:
Kingdom: Animalia
Phylum: Cnidaria
Subphylum: Anthozoa
Class: Anthozoa
Subclass: Octocorallia
Order: Pennatulacea
Genus: Graphularia
Species: Graphularia wetherelli
Image taken from Tony Mitchell's Database with Tony Mitchell's help and permission.
Graphularia wetherelli is a type of soft coral, also refered to as sea pens or octocoral.
Acknowledgments:
Thank you very much Tony Mitchell for allowing usage of an image on this page.
References:
https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=453897&is_real_user=1
https://www.marinespecies.org/aphia.php?p=taxdetails&id=411365