Aspidopora newberryi

Classification
Phylum: Bryozoa
Class: Stenolaemata
Order: Trepostomatida
Family: Monticuliporidae
Genus: Aspidopora
Species: Aspidopora newberryi (Nicholson, 1875)

Taxonomic Details

Referred to as: Monticulipora newberryiTaxonomic History (Nickles & Bassler, 1900)

  • 1875 Chaetetes newberryi Nicholson, Pal. Ohio, II, p. 212, pl. xxii, 4, 4a.
  • 1881 Monticulipora (Prasopora) newberryi Nicholson, Genus Monticulipora, p. 212, pl. iv, 1-1c.
  • 1883 Prasopora ? newberryi Ulrich, Jour. Cincinnati Soc. Nat. Hist., VI, p. 165.
  • 1886 Aspidopora newberryi Ulrich, Fourteenth Ann. Rep. Geol. Nat. Hist. Surv. Minnesota, p. 91.
  • 1888 Monticulipora newberryi James and James, Jour. Cincinnati Soc. Nat. Hist., X, p. 164.
  • 1894 Monticulipora newberryi J.F. James, Jour. Cincinnati Soc. Nat. Hist., XVI, p. 179.

Stratigraphic Occurrences

A.newberryi_strat

Geographic Occurrences

Map point data provided by iDigBio.

Stratigraphic Description

Sequences (Formations)

  • C1 Sequence (Clays Ferry/Kope: McMicken, Southgate, Economy/Fulton)

Identification in Hand Sample
Aspidopora_newberryi

  • Zoarium Morphology: Discoidal (~2cm in diameter), Composed of 2 or more superimposed layers; lower side concave, with wrinkled epitheca
  • Zoecia: Circular to sub-elliptical
  • Mesozooids: Numerous, sometimes isolating the zooecia
  • Monticules: None – surface smooth
  • Maculae: Composed of larger apertures

Aspidopora newberryi from the Kope Formation of Covington, Kentucky (OUIP 89)

Published Description

McFarlan (1931):

  • A thin discoidal expansion about 2 cm. in diameter. Surface smooth with maculae of larger apertures. Diaphragms closely spaced in the mesopores. Cystiphragms lining the walls of the zooecia.

James (1887):

  • Corallum forming a thin, sub-circular expansion, occasionally seemingly parasitic, but generally free, the under surface having a thin epitheca. Upper surface smooth, but with groups of corallites larger than the average, and these at times forming low monticules. Calices polygonal, sub-quadrate, or oval, often regularly arranged in lines. Walls thin. Interstitial tubes present in well-preserved specimens, but difficult to detect on the surface. Spiniform corallites to be seen in well-preserved specimens.
  • Obs. – This species seems to have been generally free, but in the form described by Mr. Ulrich as Aspidorpora parasitica, it seems to become occasionally parasitic. In this form, when the object to which it becomes attached is too small, the edges show a well-marked epitheca, so it may not really be parasitic even here. The groups of larger calices scattered over the surface is a well-marked feature.