Hostname: page-component-54dcc4c588-rz4zl Total loading time: 0 Render date: 2025-10-03T14:00:42.319Z Has data issue: false hasContentIssue false
  • English
  • Français

The Devonian brachiopods Karbous and Trigonatrypa and their taxonomic placement

Published online by Cambridge University Press:  26 September 2025

B Gudveig Baarli Open the ORCID record for B Gudveig Baarli [Opens in a new window]  and
Michal Mergl
B Gudveig Baarli
Affiliation:
Department of Geosciences, Williams College, Williamstown, Massachusetts 01267, USA
Michal Mergl*
Affiliation:
Centre of Biology, Geosciences and Environmental Sciences, Západočeská univerzita v Plzni, Studentská 2732/8, 301 00 Plzeň, Czech Republic
*
Corresponding author: Michal Mergl Email: mmergl@cbg.zcu.cz
Get access Rights & Permissions [Opens in a new window]

Abstract

The family Glassiidae from Silurian and Devonian strata exhibits barrel-shaped and medially directed spiralia as primary characteristics. Membership in this family is small with five known genera, of which only two possess recognized spiralia. This paper aims to investigate the two Devonian glassiides: Karbous Havlíček, 1985 and Trigonatrypa Havlíček, 1990. In mature specimens, the type species K. aperinus Havlíček, 1985 and the species K. hassiacus (Siehl, 1962) show dorsally directed spiralia. Karbous is here placed in the family Karpinskiidae based on similar internal characteristics. The type species of Trigonatrypa was not available for study. A closely related species, T. baucis (Barrande, 1847), was sectioned and found to possess medially directed spiralia. The type species is likely to have the same kind of spiralia. Therefore, the case for placing Trigonatrypa in the Glassiidae is strengthened.

Information

Type
Articles
Information
Journal of Paleontology , First View , pp. 1 - 9
Check for updates
Copyright
© The Author(s), 2025. Published by Cambridge University Press on behalf of Paleontological Society

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

Footnotes

Handling Editor: Colin Sproat

References

Barrande, J., 1847, Über die Brachiopoden der silurischen Schichten von Böhmen: Naturwissenschaftlichen Abhandlungen, v. 1, p. 347–475, pls. 314–322.Google Scholar
Barrande, J., 1879, Systême Silurien du centre de la Bohême: 1ère Partie , Recherches Paléontologiques : Volume 5, Classe des Mollusques, Ordre des Brachiopodes: Published by the author, 229 p.Google Scholar
Chlupáč, I., 1998, Devonian, in Chlupáč, I., Havlíček, V., Kříž, J., Kukal, Z., and Štorch, P., eds., Palaeozoic of the Barrandian (Cambrian to Devonian): Prague, Czech Geological Survey, p. 101–133.Google Scholar
Copper, P., 1986, Evolution of the earliest smooth spire-bearing atrypoids (Brachiopoda: Lissatrypidae, Ordovician-Silurian): Palaeontology, v. 29, p. 827–866.Google Scholar
Copper, P., 1996, New and revised genera of Wenlock-Ludlow atrypids (Silurian Brachiopoda) from Gotland, Sweden, and the United Kingdom: Journal of Paleontology, v. 70, no. 6, p. 913–923.CrossRefGoogle Scholar
Copper, P., 2001, Radiations and extinctions of atrypide brachiopods: Ordovician-Devonian, in Brunton, C.H.C., Cocks, L.R.M., and Long, S.L., eds., Brachiopods Past and Present: The Systematic Association Special Volume Series, v. 63, p. 201–211.10.1201/9780203210437.ch21CrossRefGoogle Scholar
Copper, P., 2002, Atrypida, in Williams, A., Brunton, C.H.C., and Carlson, S.J., eds., Treatise on Invertebrate Paleontology, Part H, Brachiopoda (revised): Boulder Colorado, Geological Society of America and University of Kansas Press, p. H1377–H1474.Google Scholar
Davidson, T., 1881, On genera and species of spiral-bearing Brachiopoda, from specimens developed by the Rev. Norman Glass: with notes on the results obtained by Mr. George Maw from extensive washing of the Wenlock and Ludlow shales of Shropshire: Geological Magazine, v. 8, 1–13.10.1017/S0016756800112993CrossRefGoogle Scholar
Havlíček, V., 1956, Brachiopods of the Braník and Hlubočepy limestones from the immediate surroundings of Prague: Sborník Ústředního Ústavu Geologického, v. 22, p. 535–665. [in Czech]Google Scholar
Havlíček, V., 1959, Spiriferidae v českém siluru a devonu: Rozpravy Ústředního Ústavu Geologického, v. 25, p. 1–275.Google Scholar
Havlíček, V., 1967, Brachiopoda of the suborder Strophomenidina in Czechoslovakia: Rozpravy Ústředního Ústavu Geologického, v. 33, p. 1–235.Google Scholar
Havlíček, V., 1982, New Pugnacidae and Plectorhynchellidae (Brachiopoda) in the Silurian and Devonian rocks of Bohemia: Věstník Ústředního Ústavu Geologického, v. 57, p. 111–114.Google Scholar
Havlíček, V., 1985, Karbous g. n. (Lissatrypidae, Brachiopoda, Devonian) in Bohemia: Věstník Ústředního Ústavu Geologického, v. 60, p. 235–239.Google Scholar
Havlíček, V., 1987, Lower Devonian and Eifelian Atrypacea (Brachiopoda) in Central Bohemia: Sborník Geologických Věd, Palentologie, v. 28, p. 61–115.Google Scholar
Havlíček, V., 1990, Survey of articulated brachiopods, in Havlíček, V., and Kukal, Z., Sedimentology, Benthic Communities, and Brachiopods in the Suchomasty (Dalejan) and Acanthopyge (Eifelian) limestones of the Koněprusy Area (Czechoslovakia): Sborník Geologických věd, Paleontologie, v. 31, p. 128–205.Google Scholar
Havlíček, V., and Kukal, Z., 1990, Sedimentology, benthic communities, and brachiopods in the Suchomasty (Dalejan) and Acanthopyge (Eifelian) limestones of the Koněprusy area (Czechoslovakia): Sborník Geologických věd, Paleontologie, v. 31, p. 105–205.Google Scholar
Havlíček, V., and Vaněk, J., 1996, Brachiopods and trilobites in the Chýnice Limestone (Emsian) at Bubovice (Čeřinka hillside; Prague Basin): Palaeontologica Bohemiae, v. 2, p. 1–16.Google Scholar
Havlíček, V. and Vaněk, J., 1998, Pragian brachiopods, trilobites, and principal biofacies in the Prague Basin (Lower Devonian, Bohemia): Sborník Geologických věd, Paleontologie, v. 34, p. 27–109.Google Scholar
Mizens, L.I., 1977, [New Silurian atrypids from the eastern slopes of the northern Urals]: Sverdlovsk Uralskii Nauchnyi Tsentr, ANSSSR, v. 1977, p. 39–59. [in Russian]Google Scholar
Poulsen, C., 1943, The fauna of the Offley Island Formation, Part 2, Brachiopoda: Meddelelser om Grønland, v. 72, p. 1–60.Google Scholar
Rzhonsnitskaia, M., 1960, Order Atrypida, in Sarytcheva, T., ed., Brakhiopody (Bryozoa, Brachiopoda), Oshnovy Paleontologii: Akademia Nauk SSSR, Moscow, v. 7, p. 257–264.Google Scholar
Rzhonsnitskaia, M., 1964, On Devonian atrypids from the Kuznetsk basin: Transactions of the All-Union Scientific Research Institute for Geology (VSEGEI), Paleontology and Stratigraphy, new series, v. 93, p. 91–112. [In Russian].Google Scholar
Schuchert, C., and LeVene, C.M., 1929, Brachiopoda (Generum et Genotyporum Index et Bibliographia), in Pompeckj, J.F., ed., Fossilium Catalogus 1, Animalia, Pars 42: Berlin, Junk, p. 1–140.Google Scholar
Siehl, A., 1962, Der Greifensteiner Kalk (Eiflium, Rheinisches Schiefergebirge) und seine Brachiopodenfauna, 1, Geologie; Atrypacea und Rostrospiracea: Palaeontographica Abteilung A, v. 119, p. 173–221, pls. 123–140.Google Scholar
Spriestersbach, J., 1942, Lenneschiefer (Stratigraphie, Fazies und Fauna): Abhandlungen Reichsamt für Bodenforschung, v. 203, p. 1–219, 211 pls.Google Scholar
Twenhofel, W., 1914, The Anticosti island faunas: Department of Mines Museum Bulletin, v. 3, p. 1–39.Google Scholar
Vodrážková, S., and Suttner, T.J., 2020, Middle Devonian (Eifelian, australis-ensensis zones) conodonts from the Jirásek quarry near Koněprusy (Barrandian area, Czech Republic) with special emphasis on the Polygnathus pseudofoliatus Group and notes on environmental changes related to the Kačák Episode: Bulletin of Geosciences, v. 95, p. 81–125, https://doi.org/10.3140/bull.geosci.1774CrossRefGoogle Scholar