Heterotrypa frondosa

Classification
Phylum: Bryozoa
Class: Stenolaemata
Order: Trepostomatida
Family: Heterotrypidae
Genus: Heterotrypa
Species: Heterotrypa frondosa (d’Orbigny, 1850)

Taxonomic Details

Originally: Monticulipora frondosa
Includes: Chaetetes frondosus, Dekayia frondosa, Dekayia perfrondosa (UGA Strat Lab)

Taxonomic History (Nickles & Bassler, 1900)

  • 1850 Monticulipora frondosa D’Orbigny, Prodr. de Pal., I, p. 25.
  • 1851 Chaetetes frondosa Milne-Edwards and Haime, Pol. Foss. Terr. Pal., p. 267, pl. xix, 5, 5a.
  • 1854 Monticulipora frondosa Milne-Edwards and Haime, Brit. Foss. Corals., p. 265.
  • 1860 Monticulipora frondosa Milne-Edwards and Haime, Hist. Nat. des Corall., III, p. 276.
  • 1882 Monticulipora frondosa White, Eleventh Ann. Rep. Indiana Geol. Nat Hist., p. 380, pl. xlviii, 2, 3.
  • 1882 Heterotrypa frondosa Ulrich, Jour. Cincinnati Soc. Nat. Hist., V, p. 235.
  • 1881 Chaetetes frondosus Quenstedt, Roehren- und Sternkorallen, p. 73, pl. cxlvi, 8 (not 3-5).
  • 1881 Chaetetes frondosus limatus Quenstedt, Roehren- und Sternkorallen, p. 74, pl. cxlvi, 9.
  • 1874 Chaetetes mammulatus (not of D’Orbigny) Nicholson, Quar. Jour. Geol. Soc. London, XXX, p. 508, pl. xxx, 2-2b.
  • 1875 Chaetetes mammulatus (not of D’Orbigny) Nicholson, Pal. Ohio, II, p. 207.
  • 1879 Monticulipora (Heterotrypa) mammulata (not of D’Orbigny) Nicholson, Pal. Tabulate Corals, p. 294, pl. xiii, 1-1b.
  • 1881 Monticulipora (Heterotrypa) mammulata (not of D’Orbigny) Nicholson, Genus Monticulipora, p. 104, pl. vi, 1-1g.
  • 1888 Monticulipora mammulata (not of D’Orbigny) James and James, Jour. Cincinnati Soc. Nat. Hist., XI, p.16.
  • 1895 Monticulipora mammulata (not of D’Orbigny) J.F. James, Jour. Cincinnati Soc. Nat. Hist., XVIII, p. 69.

Stratigraphic Occurrences

H.frondosa_strat

Geographic Occurrences

Map point data provided by iDigBio.

Stratigraphic Description

Sequences (Formations)

  • C4 Sequence (Arnheim)
  • C3 Sequence (Mt. Auburn, Corryville)
  • C2 Sequence (Bellevue, Fairview: Fairmount, Mt. Hope)

Identification in Hand Sample

  • Zoarium Morphology: Large, frondescent
  • Zoecia: Polygonal to circular, thick walled; acanthopores numerous (generally small, sometimes large)
  • Mesozooids: Abundant, uniformly distributed
  • Monticules: small, sharp monticules (at regular 3mm intervals)
  • Maculae:

Heterotrypa frondosa from Maysville group, unknown formation and location (MUIP 22059)

Published Description

McFarlan (1931)

  • Zooarium large, frondescent. Surface with small, sharp monticules at 3mm intervals. Zooecia moderately thick walled, polygonal to circular. Mesopores abundant, rather uniformly distributed. Zooecial walls much thickened in the deep. Acanthopores fairly numerous, of small size, with occasionally a larger one.