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Heterolepa
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Cassidulinacea
Family:
Anomalinidae
Subfamily:
Anomalininae
Formal Genus Name and Reference:
Heterolepa FRANZENAU, 1884, *742, p. 214
Type Species:
H. simplex=*Rotalina dutemplei d'Orbigny, 1846, *1395, p. 157, SD Loeblich & TAPPAN, 1962, *1187, p. 72
Images
(Click to enlarge in a new window)
Fig. 623,3. *H. dutemplei (d'Orbigny), Mio., Eu.(Aus. ), 3a-c, opp. sides and edge view, X37 (*2117). -- Fig. 624,1. H. praecincta Franzenau, Mio., Eu. (Hung. ), horiz. sec. showing bilamellar wall character and coarse perforations, enlarged (*742). -- Fig. 624,2. H. bullata Franzenau, Mio., Eu. (Hung. ), vert. sec., enlarged (*742). -- Fig. 623,4,5. H. scanica (Brotzen), Paleoc., Eu. (Sweden), 4a-c, opp. sides and edge view of holotype, 5, horiz. sec., with secondarily resorbed septa, probably due to preservation, X38 (*241). -- Fig. 623,6. H. pegwellensis (Haynes), Paleoc., Brit.I.(Eng. ), 6a-c, opp. sides and edge view of holotype, X90 (*887)
Synonyms
Pseudotruncatulina
Geographic Distribution
cosmop
Age Range
Beginning Stage in Treatise Usage:
U. Cret.(Maastricht.)
Beginning International Stage:
Maastrichtian
Fraction Up In Beginning Stage:
0
Beginning Date:
72.17
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Test free, trochospiral, inequally biconvex or plano-convex, periphery bluntly angled, may have nonperforate keel, flat to slightly convex evolute spiral side, with relatively numerous chambers in slowly enlarging whorls, more convex umbilical side involute, with radial sutures, wall calcareous, thick and lamellar, coarsely and regularly perforate, granular in structure, septa double (bilamellar), aperture slitlike, interiomarginal, extending about half of distance to umbilicus on umbilical side and extending across periphery on spiral side, may also extend for some distance along spiral suture.
References
Franzenau, Agoston, 1884, Heterolepa, egy uj genus a Foraminiterák rendjében: Természetrajzi Füzetek, v. 8, pt. 3, p. 181-184, 214-217, pl. 5.-(743) 1885, Adalék nehány foraminifera héjszerkezetének ismeretéhez (Beitrag zur Kenntniss der Schalenstruktur einiger Foraminiferen): Magyar Nemz. Múz., Termész. Füzetek-Budapest, v. 9, no. 2, p. 92-94 (also p. 151-153), pl. 7-(744) 1888, Pleiona, n.gen. a foraminiferák rendjében és a Chilostomella eximia n.sp.-röl.: Same, v. 11, p. 146147, 203-204, text-fig.-(745) 1893, Semseya, eine nete Gattang aus der Ordnung der Foraminiferen: Math. \& Naturwiss. Berichten aus Ungarn., v. 11, p. 358-361, pl. 25.
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Cassidulinacea
Family:
Anomalinidae
Subfamily:
Anomalininae
Formal Genus Name and Reference:
Heterolepa FRANZENAU, 1884, *742, p. 214
Type Species:
H. simplex=*Rotalina dutemplei d'Orbigny, 1846, *1395, p. 157, SD Loeblich & TAPPAN, 1962, *1187, p. 72
Images
(Click to enlarge in a new window)
Fig. 623,3. *H. dutemplei (d'Orbigny), Mio., Eu.(Aus. ), 3a-c, opp. sides and edge view, X37 (*2117). -- Fig. 624,1. H. praecincta Franzenau, Mio., Eu. (Hung. ), horiz. sec. showing bilamellar wall character and coarse perforations, enlarged (*742). -- Fig. 624,2. H. bullata Franzenau, Mio., Eu. (Hung. ), vert. sec., enlarged (*742). -- Fig. 623,4,5. H. scanica (Brotzen), Paleoc., Eu. (Sweden), 4a-c, opp. sides and edge view of holotype, 5, horiz. sec., with secondarily resorbed septa, probably due to preservation, X38 (*241). -- Fig. 623,6. H. pegwellensis (Haynes), Paleoc., Brit.I.(Eng. ), 6a-c, opp. sides and edge view of holotype, X90 (*887)
Synonyms
Pseudotruncatulina
Geographic Distribution
cosmop
Age Range
Beginning Stage in Treatise Usage:
U. Cret.(Maastricht.)
Beginning International Stage:
Maastrichtian
Fraction Up In Beginning Stage:
0
Beginning Date:
72.17
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Test free, trochospiral, inequally biconvex or plano-convex, periphery bluntly angled, may have nonperforate keel, flat to slightly convex evolute spiral side, with relatively numerous chambers in slowly enlarging whorls, more convex umbilical side involute, with radial sutures, wall calcareous, thick and lamellar, coarsely and regularly perforate, granular in structure, septa double (bilamellar), aperture slitlike, interiomarginal, extending about half of distance to umbilicus on umbilical side and extending across periphery on spiral side, may also extend for some distance along spiral suture.
References
Franzenau, Agoston, 1884, Heterolepa, egy uj genus a Foraminiterák rendjében: Természetrajzi Füzetek, v. 8, pt. 3, p. 181-184, 214-217, pl. 5.-(743) 1885, Adalék nehány foraminifera héjszerkezetének ismeretéhez (Beitrag zur Kenntniss der Schalenstruktur einiger Foraminiferen): Magyar Nemz. Múz., Termész. Füzetek-Budapest, v. 9, no. 2, p. 92-94 (also p. 151-153), pl. 7-(744) 1888, Pleiona, n.gen. a foraminiferák rendjében és a Chilostomella eximia n.sp.-röl.: Same, v. 11, p. 146147, 203-204, text-fig.-(745) 1893, Semseya, eine nete Gattang aus der Ordnung der Foraminiferen: Math. \& Naturwiss. Berichten aus Ungarn., v. 11, p. 358-361, pl. 25.