Welcome to the Treatise on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Archaias
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Miliolina
Superfamily:
Miliolacea
Family:
Soritidae
Subfamily:
Archaiasinae
Formal Genus Name and Reference:
Archaias de MONTFORT, 1808, *1305, p. 190
Type Species:
A. spirans ( =Nautilus angulatus Fichtel & MOLL, 1798, *716, p. 113), OD
Images
(Click to enlarge in a new window)
Fig. 382,1-5. *A. angulatus (FICHTEL & MOLL), Rec., Bermuda (1,2), Barbados (3-5) ; 1a,b, side, apert. views, X 19 (*2117); 2, side view of juvenile specimen, X 19; 3, equat. sec. of microspheric test, X 8; 4, equat. sec. of megalospheric test, X 13; 5, axial sec. of megalospheric test, X 13 (*1806).
Synonyms
Helenis, Nautilus
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
M.Eoc.
Beginning International Stage:
Lutetian
Fraction Up In Beginning Stage:
0
Beginning Date:
48.07
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Test compressed, early stage planispiral, involute, later chambers /Iaring, becoming evolute to cyclical; interior of chambers with interseptal pillars; aperture multiple, with rows of pores on terminal face of final chamber.
References
Montfort, Denys de, 1808, Conchyliologie systématique et classification methodique des coquilles: v. 1, 1xxxvii+409 p.
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Miliolina
Superfamily:
Miliolacea
Family:
Soritidae
Subfamily:
Archaiasinae
Formal Genus Name and Reference:
Archaias de MONTFORT, 1808, *1305, p. 190
Type Species:
A. spirans ( =Nautilus angulatus Fichtel & MOLL, 1798, *716, p. 113), OD
Images
(Click to enlarge in a new window)
Fig. 382,1-5. *A. angulatus (FICHTEL & MOLL), Rec., Bermuda (1,2), Barbados (3-5) ; 1a,b, side, apert. views, X 19 (*2117); 2, side view of juvenile specimen, X 19; 3, equat. sec. of microspheric test, X 8; 4, equat. sec. of megalospheric test, X 13; 5, axial sec. of megalospheric test, X 13 (*1806).
Synonyms
Helenis, Nautilus
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
M.Eoc.
Beginning International Stage:
Lutetian
Fraction Up In Beginning Stage:
0
Beginning Date:
48.07
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Test compressed, early stage planispiral, involute, later chambers /Iaring, becoming evolute to cyclical; interior of chambers with interseptal pillars; aperture multiple, with rows of pores on terminal face of final chamber.
References
Montfort, Denys de, 1808, Conchyliologie systématique et classification methodique des coquilles: v. 1, 1xxxvii+409 p.