Escharopora falciformis

Phylum: Bryozoa
Class: Stenolaemata
Order:  Cryptostomata
Genus: Escharopora
Species: Escharopora falciformis (Nicholson)

Taxonomic Details

History (Nickles & Bassler, 1900)

  • 1849 Ptilodictya cruciformis D’Orbigny, Prodr. de Pal., I p. 21 (not defined)
  • 1875 Ptilodictya falciformis Nicholson, Ann. Mag. Nat. Hist., ser. 4, XV, p. 177, pl. xiv, 1-1b.
  • 1875 Ptilodictya falciformis Nicholson, Pal. Ohio, II, p. 259, pl. xxv, 7, 7b.
  • 1883 Ptilodictya falciformis (Van Cleve) Hall, Twelfth Ann. Rep. Indiana Geol. Nat. Hist., p. 265, pl. xii, 1.
  • 1893 Escharopora falciformis Ulrich, Geol. Minnesota, III, p. 167.
  • 1881 Escharopora recta (not of Hall). Wuenstedt, Roehren-und Sternkorallen, p. 94, pl. cxlvi, 69, 70.
  • 1879 Crateripora lineata Ulrich, Jour. Cincinnati Soc. Nat. Hist., II, p. 30, pl. vii, 28, 28a.
  • 1879 Crateripora lineata var. expansa Ulrich, Jour. Cincinnati Soc. Nat. Hist., II, p. 30.

Stratigraphic Occurrences


Geographic Occurrences

Map point data provided by iDigBio.

Stratigraphic Description

Sequences (Formations)

  • C2 Sequence (Mount Hope, Fairmount)

Identification in Hand Sample
E. falciformis

  • Zoarium Morphology: Thin, sharp-edged, falciform frond; length seldom over 50mm, 1 mm thick
  • Zoecia: Polygonal, almost diamond shape; Form diagonal rows at ~60 deg angle with each other, ~30 deg with edge of frond
  • Mesozooids: Few
  • Monticules: none/inconspicuous

Escharopora falciformis from Fairview Formation of Clermont County, Ohio (OUIP 325)

Published Description

McFarlan, (1931):

  • Thin, sharp edged, falciform frond. Length seldom over 50mm, thickness 1mm. Diagonal rows make ~60 deg angle with each other, ~30 deg with edge of frond