A new “slime star” (Echinodermata, Asteroidea, Velatida) from the Upper Cretaceous Chalk of the United Kingdom

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New material of pterasterid asteroids from the UK chalk is described on the basis of ossicles recovered from washed residues. A new species, Pteraster lyddenensis sp. nov., is erected for oral and adambulacral ossicles and a primary radial ossicle from the Cenomanian Grey Chalk Subgroup of Dover (Kent), and the first UK record of Pteraster kutscheri Gale, 2022 is described from the upper Campanian Chalk of Norwich (Norfolk); both taxa belong to extant groups of Pteraster. Pteraster lyddenensis sp. nov. is the oldest known representative of the genus. The benthic invertebrate fauna of the Cretaceous chalk facies includes a number of extant genera which at the present day dwell in the deep sea. However, their presence was probably due to the low-productivity oceanic palaeoenvironment of the Chalk Sea, simulating deep-ocean conditions, rather than its depth.
Original languageEnglish
Pages (from-to)107-114
Number of pages8
JournalProceedings of the Geologists' Association
Issue number1
Early online date19 Dec 2022
Publication statusPublished - 1 Feb 2023


  • Pterasteridae
  • Cretaceous
  • United Kingdom

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