Velumbrella

Velumbrella is an eldonioid^[1] known from the Early to Middle Cambrian of Poland.^[2] The fossils depict a scleritosed disk with a U-shaped gut.^[3]

Velumbrella Temporal range: Early Cambrian–Middle Cambrian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Clade:	†Cambroernida
Class:	†Eldonioidea
Family:	†Rotadiscidae (?)
Genus:	†Velumbrella Stasińska 1960
Type species
V. czarnockii Stasińska 1960

Velumbrella was originally thought to be related to the hydrozoan order Trachylenida,^[4] or possibly to Ediacaria or Beltanella which were considered to be Cambrian jellyfish.^[5] Upon erecting the class Eldonioidea, Dzik assigned Vellumbrella to Eldoniidae rather than Rotadiscidae on account of its radial ribs.^[6]

Several authors (including Dzik) later noted the similarity between Velumbrella cznarnockii and Pararotadiscus guizhouensis (which was initially described as Rotadiscus guizhouensis).^[7][8] A more recent review tenatively placed Velumbrella in the Rotadiscidae (along with the more confidently-assigned Pararotadiscus),^[1] noting that the rotadiscids are distinguished from other eldonioid families by concentric ornamentations on the dorsal surface.^[9]