Robuta

https://www.bas.ac.uk/data/our-data/publication/late-mesozoic-stratigraphy-and-invertebrate-palaeontology-of-the-south-orkney/

Late Mesozoic stratigraphy and invertebrate palaeontology of the South Orkney Islands - British...

invertebrate palaeontology south orkney late mesozoic stratigraphy