Palaeotetradinium hyalodermum Cookson, 1956

Now Goniosphaeridium (an acritarch genus). Originally Palaeotetradinium, subsequently Veryhachium (an acritarch genus), thirdly Goniosphaeridium (an acritarch genus) fourthly (and now) Dorsennidium (acritarch genus)
Holotype: Cookson, 1956, pl.1, figs.12-13
Age: Albian-Cenomanian