Echinoidea taxon details
original description
(of Hemicidaris purbeckensis Forbes, 1850 †) Forbes, E. (1850). Figures and descriptions illustrative of British Organic Remains, Decade III. <em>Memoires of the Gological Survey of the United Kingdom.</em> , available online at https://www.biodiversitylibrary.org/page/45185331 page(s): pl. 5: figs 1-4 and 4 pp. explanation [details]
new combination reference
Smith, A.B. (2016). British Jurassic Regular Echinoids. <em>Monograph of the Palaeontographical Society.</em> 170 (646): 69-176, pls 42-82. page(s): 122-123; text-fig. 27J, K; pl. 65: figs 1-5 [details]
From editor or global species database
Diagnosis Primary ambulacral tubercles become irregularly uniserial in zone around ambitus. Periproct less than two-thirds the length of the apical disc; genital plates pentagonal. Interambulacral tubercles broadly confluent at ambitus. [details]
Fossil range Tithonian Albani or Glaucolithus Zone, Portland, Dorset [details]
Stratigraphy Portland Sand, lower part of the Portland Formation; Berriasian Cinder Bed [details]
Type locality Portland, Dorset; Portlandian of Normandy [details]
Type material Lectotyp: NHM E1679
NHM = Natural History Museum London, UK [details]
From editor or global species database
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