The Echinoid Directory

Lampadocorys Pomel, 1883, p. 46

Diagnostic Features
  • Test ovate; very thick-shelled.
  • Apical disc with four gonopores.
  • Anterior ambulacrum flush from ambitus adapically, but forming a deep sulcus beneath the ambitus to the peristome.
  • Peristome small and circular; set rather far back from the anterior margin. Oblique and opening towards anterior.
  • All ambulacra non-petaloid; pore-pairs small and undeveloped adapically.
  • Plastron plating meridosternous with sternal plate followed by somewhat offset episternals. Probably disjunct.
  • Aboral tuberculation fine and uniform.
  • Periproct low on posterior truncate face; just visible in oral view.
  • No fascioles.
Upper Cretaceous to Palaeocene, Europe.
Name gender feminine
Holaster sulcatus Cotteau, 1873, p. 170, by original designation.
Species Included
  • L. sulcatus (Cotteau, 1873); Cenomanian, France and Germany (includes Holaster stumcki Wollman).
  • L. ennisi Smith & Wright, 2003; Cenomanian, UK.
  • L. airaghii Lambert; Scaglia, Upper Cretaceous, Italy.
  • L. dallagoi (Airaghi); Scaglia, Upper Cretaceous, Italy.
  • L. cotteaui (Seunes, 1889); Maastrichtian; Pyrenees.
  • L. palaeocenicus (Smith & Gallemi 1999); Palaeocene, Spain.
Classification and/or Status

Holasteroida, basal Meridosternata.

Possibly paraphyletic by exclusion of Sternopatagus.


Differs from Stegaster in having no frontal groove. Differs from Basseaster in lacking a subanal fasciole and by its disjunct plastron. Sternopatagus also has a disjunct plastron, but has a marginal fasciole and paired episternal plates.

Pomel, A. 1883. Classification méthodique et genera des Échinides vivante et fossiles. Thèses présentées a la Faculté des Sciences de Paris pour obtenir le Grade de Docteur ès Sciences Naturelles, 503, 131 pp. Aldolphe Jourdan, Alger.

Smith, A. B. & Wright, C. W. 2003. British Cretaceous echinoids. Part 7, Atelostomata, 1. Holasteroida. Palaeontographical Society Monographs, London. Pp. 440-568, pls 139-182.