Physical Description

Type Information

Type Species of Archaias de Montfort, 1808

The type species of Archaias de Montfort, 1808 is Archaias spirans de Montfort, 1808 = Nautilus angulatus Fichtel and Moll, 1798, by original designation (De Montfort 1808: 191). Archaias spirans de Montfort is an objective synonym of Nautilus angulatus Fichtel and Moll, 1798.

Two other genera erected by De Montfort (1808), Ilotes and Helenis, are synonymized with Archaias, as their type species have been shown to represent different developmental stages of Archaias angulatus Fichtel and Moll, 1798. The type species of Ilotes de Montfort, 1808 is Ilotes rotalitus de Montfort, 1808 = Nautilus orbiculus Fichtel and Moll, 1798, by original designation (De Montfort 1808: 199). Nautilus orbiculus Fichtel and Moll, 1798, represents a juvenile stage of Nautilus angulatus, Fichtel and Moll, 1798, and is considered to be a subjective synonym of the latter species (Crapon de Caprona d'Ersu and Benier 1985, Cushman 1946, Lévy 1977, Loeblich and Tappan 1964, Loeblich and Tappan 1988, Rögl and Hansen 1984). The type species of Helenis de Montfort, 1808 is Helenis spatosus de Montfort, 1808 = Nautilus aduncus Fichtel and Moll, 1798, by original designation (De Montfort 1808: 195). Nautilus aduncus Fichtel and Moll, 1798, represents the adult flabelliform stage of Nautilus angulatus, Fichtel and Moll, 1798, and is considered to be a subjective synonym of the latter species (Crapon de Caprona d'Ersu and Benier 1985, Cushman 1946, Lévy 1977, Loeblich and Tappan 1964, Loeblich and Tappan 1988, Rögl and Hansen 1984).

The type specimens of Archaias angulatus, A. orbiculus, and A. aduncus are housed in the collections of the Department of Geology and Paleontology, Natural History Museum, Vienna, Austria (Rögl and Hansen 1984). 

  • Crapon de Caprona d'Ersu, A., and C. Benier. 1985. Contribution à l'étude des Soritidae actuels (Foraminifères)--3: Sous-familes des Archaiasinae, Meandropsininae et Soritinae et conclusions generales. Revue de Paleobiologie 4(2):347-390.
  • Cushman, J. A. 1946. The species of foraminifera named and figured by Fichtel and Moll in 1798 and 1803. Special Publication of the Cushman Foundation for Foraminferal Research 17:16.
  • De Montfort, P. D. 1808. Conchyliologie systématique et classification méthodique des coquilles. F. Schoell, Paris.
  • Fichtel, L. v., and J. P. C. v. Moll. 1798. Testacea microscopica aliaque minuta ex generibus Argonauta et Nautilus ad naturam picta et descripta. Anton Pichler, Vienna.
  • Loeblich, A. R., and H. N. Tappan. 1988. Foraminiferal genera and their classification. Van Nostrand Reinhold Co., New York.
  • Loeblich, A. R., and H. Tappan. 1964. Protista 2. Sarcodina chiefly "Thecamoebians" and Foraminiferida. The Geological Society of America and The University of Kansas Press, Lawrence, Kansas.
  • Lévy, A. 1977. Révision micropaléontologique des Soritidae actuels bahamiens: Un nouveau genre; Androsina. Bulletin des Centres de Recherches Exploration-Production ELF-Aquitaine 1(2):393-449.
  • Rögl, F., and H. J. Hansen. 1984. Foraminifera described by Fichtel & Moll in 1798: a revision of Testacea Microscopica. F. Berger, Vienna.
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