Hypostomes in Cambrian agnostids from the Barrandian area (Czech Republic)

 

Authors: Fatka O, Kozák V

Published in: Bulletin of Geosciences, volume 98, issue 4; pages: 317 - 326; Received 30 June 2023; Accepted in revised form 3 November 2023; Online 24 December 2023

Keywords: Agnostida, hypostomes, middle Cambrian, Jince Formation, Buchava Formation, Barrandian area, Czech Republic,

full text (PDF, 2.77 MB)

Export to RIS

 

Abstract

Remains of agnostid hypostomes are rare and have only been reported in about fifty specimens assigned to ten Cambrian species. A large collection of several thousand specimens of a Cambrian skeletal fauna from the Barrandian area includes articulated agnostids with in situ preserved hypostomes in two species from the Příbram-Jince Basin and in one species from the Skryje-Týřovice Basin. Unequivocal remains of hypostomes are described in Condylopyge rex (Barrande, 1846), Peronopsis integra (Beyrich, 1845) and Onymagnostus hybridus (Brogger, 1878). The material provides the first information on the hypostomal morphology in the superfamily Condylopygoidea Raymond, 1913 and adds new data in two other Cambrian agnostid genera. The chemical composition and placement of agnostid hypostomes are briefly discussed.

References

Axheimer, N. & Ahlberg, P. 2003. A core drilling through Cambrian strata at Almbacken, Scania, S. Sweden: trilobites and stratigraphical assessment. GFF 125(3), 139-156. View article

Babcock, L.E., Dong, X.P. & Robison, R.A. 2005. Agnostoid trilobite with phosphatized anatomy and microbial biofilm from the Cambrian of China. Acta Micropalaeontologica Sinica 22(Suppl.), 10-12.

Barrande, J. 1846. Notice préliminaire sur le Systeme Silurien et les trilobites de Boheme. 97 pp. Hirschfeld, Leipzig. View article

Barrande, J. 1852. Systeme Silurien du Centre de la Boheme. Iere partie: Recherches paléontologiques. Vol. I. Crustaces: trilobites. 935 pp. Published by the author, Praha & Paris. View article

Beyrich, E. 1845. Ueber einige böhmische Trilobiten. 47 pp. G. Reimer, Berlin.

Brongniart, A. & Desmarest, A.G. 1822. Histoire naturelle des crustacés fossiles, sous les rapports zoologiques et géologiques. Savoir: Les Trilobites. 154 pp. F.G. Levrault, Paris. View article

Brogger, W.C. 1878. Om paradoxidesskifrene ved Krekling. Nyt Magazin for Naturvidenskaberne 24, 18-88.

Budil, P., Fatka, O., Kolář, P. & David, M. 2011. Arthrorhachis Hawle and Corda, 1984 (Agnostida) in the Prague Basin (Barrandian area, Czech Republic) revisited. Bulletin of Geosciences 86(4), 707-724. View article

Butts, C. 1926. The Palaeozoic Rocks, 41-230. In Adams, G.I., Butts, C., Stephanson, L. & Cooke, W. (eds) Geology of Alabama. Geological Survey of Alabama, Special Report 14.

Chlupáč, I. 1999. Barrande’s stratigraphic concepts, palaeontological localities and tradition - comparison with the present state. Journal of the Czech Geological Society 44(1-2), 3-30.

Fatka, O. & Kordule, V. 1992. New fossil sites in the Jince Formation (Middle Cambrian, Bohemia). Věstník Českého geologického ústavu 67(1), 47-60.

Fatka, O. & Kozák, V. 2014. A new type of entombment of Peronopsis (Agnostida) in a hyolithid conch. Carnets de Géologie [Notebooks on Geology] 14(10), 191-198. View article

Fatka, O. & Szabad, M. 2011. Agnostid entombed under exoskeletons of paradoxidid trilobites. Neues Jahrbuch für Geologie und Paläontologie Abhandlungen 259(2), 207-215. View article

Fatka, O. & Szabad, M. 2014. Biostratigraphy of Cambrian in the Příbram-Jince Basin (Barrandian area, Czech Republic). Bulletin of Geosciences 89(2), 411-427. View article

Fatka, O., Kordule, V. & Szabad, M. 2004. Stratigraphical distribution of Cambrian fossils in the Příbram-Jince Basin (Barrandian area, Czech Republic). Senckenbergiana lethaea 84(1/2), 369-384. View article

Fatka, O., Szabad, M. & Budil, P. 2009a. Malformed agnostids from the Middle Cambrian Jince Formation of the Příbram-Jince Basin, Czech Republic. Bulletin of Geosciences 83(1), 121-126. View article

Fatka, O., Vokáč, V., Moravec, J., Šinágl, M. & Valent, M. 2009b. Agnostids entombed in hyolith conchs. Memoirs of the Association of Australasian Palaeontologists 37, 481-489.

Fatka, O., Micka, V., Szabad, M., Vokáč, V. & Vorel, T. 2011. Nomenclature of Cambrian lithostratigraphy of the Skryje-Týřovice Basin. Bulletin of Geosciences 85(4), 841-858. View article

Fatka, O., Williams, M. & Budil, P. 2014. Bradoriid arthropods from the Cambrian of the Příbram-Jince Basin, Czech Republic. Neues Jahrbuch für Geologie und Paläontologie Abhandlungen 273(2), 147-154. View article

Fatka, O., Knížek, F. & Kozák, V. 2015. Condylopyge Hawle et Corda, 1847 in the Příbram-Jince Basin (Barrandian area, Czech Republic, Agnostida). Acta Musei Nationalis Pragae, Series B, Historia Naturalis 71(1-2), 103-109. View article

Geyer, G., Elicki, O., Fatka, O. & Zylińska, A. 2008. Cambrian, 155-195. In McCann, T. (ed.) Geology of Central Europe. Geological Society of London. View article

Haug, J.T., Waloszek, D., Maas, A., Liu, Y. & Haug, C. 2012. Functional morphology, ontogeny and evolution of mantis shrimp-like predators in the Cambrian. Palaeontology 55(2), 369-399. View article

Havlíček, V. 1971. Stratigraphy of the Cambrian of Central Bohemia. Sborník geologických věd, Geologie 20, 7-52.

Hawle, J. & Corda, A.J.C. 1847. Prodrom einer Monographie der böhmischen Trilobiten. Abhandlungen der königlichen böhmischen Gesellschaft der Wissenschaften 5(5), 119-292.

Howell, B.F. 1935. Some New Brunswick Cambrian agnostians. Bulletin of the Wagner Free Institute of Science 10, 13-16.

Illing, V.C. 1916. Paradoxidian fauna of the Stockingford Shales. Quarterly Journal of the Geological Society of London 71, 386-450. View article

Jaekel, O. 1909. Über die Agnostiden. Zeitschrift der Deutschen Geologischen Gesellschaft 61(4), 380-400.

Jahn, J.J. 1896. Ueber die geologischen Verhältnisse des Cambrium von Tejřovic und Skrej in Böhmen. Jahrbuch der Keiserlichen-königlichen geologischen Reichsanstalt 45(4), 641-790.

Kobayashi, T. 1939. On the Agnostids (part 1). Journal of the Faculty of Science, Imperial University of Tokyo, Section 2(5), 69-198.

Laibl, L. & Fatka, O. 2017. Review of early developmental stages of trilobites and agnostids from the Barrandian area (Czech Republic). Journal of the National Museum (Prague), Natural History Series 186, 103-112. View article

Linnarsson, J.G.O. 1869. Om Vestergötlands cambriska och siluriska aflagringar. Kongliga Svenska Vetenskapsakademiens Handlingar 8, 1-89.

Maas, A., Braun, A., Dong, X.P., Donoghue, P.C.J., Müller, K.J., Olempska, E., Repetski, J.E., Siveter, D.J., Stein, M. & Waloszek, D. 2006. The ’Orsten’ - more than a Cambrian Konservat-Lagerstätte yielding exceptional preservation. Palaeoworld 15(3-4), 266-282. View article

Mašek, J., Straka, J., Hrazdíra, P., Pálenský, P., Štěpánek, P. & Hůla, P. 1997. Geological and nature conservation map. Protected landscape area and biosphere reserve Křivoklátsko. Czech Geological Survey.

Mikuláš, R. & Fatka, O. 2017. Ichnogenus Astropolichnus in Cambrian of the Barrandian area, Czech Republic. Ichnos 24(4), 283-290. View article

Moysiuk, J. & Caron, J.B. 2019a. Burgess Shale fossils shed light on the agnostid problem. Proceedings of the Royal Society B: Biological Sciences 286, 20182314. View article

Moysiuk, J. & Caron, J.B. 2019b. Supplementary material from “Burgess shale fossils shed light on the agnostid problem”. The Royal Society. Collection. View article

Müller, K.J. & Walossek, D. 1987. Morphology, ontogeny, and life habit of Agnostus pisiformis from the Upper Cambrian of Sweden. Fossils and Strata 19, 1-124. View article

Naimark, E.B. 2012. Hundred species of the genus Peronopsis Hawle & Corda 1847. Paleontological Journal 46(9), 945-1057. View article

Nielsen, A.T. & Schovsbo, N.H. 2007. Cambrian to basal Ordovician lithostratigraphy in southern Scandinavia. Bulletin of the Geological Society of Denmark 53, 47-92. View article

Öpik, A.A. 1979. Middle Cambrian agnostids; systematics and biostratigraphy. Bureau of Mineral Resources of Australia, Bulletin 172(1), 1-188.

Pek, I. 1977. Agnostid trilobites of the Central Bohemian Ordovician. Sborník geologických věd, paleontology 19, 7-44.

Pompeckj, J.F. 1896. Die Fauna des Kambriums von Tejřovic und Skrej in Böhmen. Jahrbuch der Keiserlichen-königlichen geologischen Reichsanstalt 45, 495-615.

Prantl, F. 1941. O nalezišti kambrických zkamenělin „Pod trním“ u Skryjí (On the “Pod trním” locality at Skryje). Věda přírodní 20, 118-120.

Prantl, F. 1948. Some terebelloid remains from the Ordovician of Bohemia. Věstník Královské české Společnosti Nauk, Třída matematicko-přírodovědná 8, 1-8.

Přibyl, A. & Vaněk, J. 1976. Palaeoecology of Berounian trilobites from the Barrandian area. Rozpravy České Akademie Věd, Řada matematických-přírodních věd 86(5), 3-39.

Rasetti, F. 1951. Middle Cambrian stratigraphy and faunas of the Canadian Rocky Mountains. Smithsonian miscellaneous collections 116(5), 1-277.

Rasetti, F. 1952. Ventral cephalic sutures in Cambrian trilobites. American Journal of Science 250, 885-898. View article

Raymond, P.E. 1913. Some changes in the names of genera of trilobites. The Ottawa Naturalist 26(11), 137-142.

Ritterbush, L.A. 1983. Position of the labrum in agnostid trilobites. Lethaia 16(4), 309-310. View article

Robison, R.A. 1972. Hypostoma of agnostid trilobites. Lethaia 5(2), 239-248. View article

Robison, R.A. 1982. Middle Cambrian agnostoid trilobites from western North America. Journal of Paleontology 56(1), 132-160.

Robison, R.A. 1984. Cambrian Agnostida of North America and Greenland, Pt. I, Ptychagnostidae. University of Kansas Paleontological Contributions, Paper 109, 1-59.

Robison, R.A. 1988. Trilobites of the Holm Dal Formation (late Middle Cambrian), central North Greenland. Meddelelser om Gronland, Geoscience 20, 23-103.

Rushton, A.W.A. 1979. A review of the Middle Cambrian Agnostida from the Abbey Shales, England. Alcheringa 3(1), 43-61. View article

Slavíčková, J. & Kraft, P. 2001. Remarks on the palaeoecology of agnostid trilobites. Journal of the Czech Geological Society 46(3-4), 215-218.

Šnajdr, M. 1958. Trilobiti českého středního kambria (The trilobites of the Middle Cambrian of Bohemia). Rozpravy Ústředního ústavu geologického 24, 1-280.

Šuf, J. 1926. Preliminary report on Middle Cambrian faunistical levels of the Vystrkov near Jince. Věstník Státního geologického Ústavu Československé Republiky 2(3), 129-135.

Tullberg, S.A. 1880. Om Agnostus-arterna i de kambriska aflagringarne vid Andrarum. Sveriges Geologiska Undersökning C 42, 1-38.

Wahlenberg, G. 1818. Petrificata Telluris Svecanae. Nova Acta Regiae Societatis Scientiarum Upsaliensis 8, 1-116.

Weidner, T. & Nielsen, A.T. 2014. A highly diverse trilobite fauna with Avalonian affinities from the Middle Cambrian Acidusus atavus Zone (Drumian Stage) of Bornholm, Denmark. Journal of Systematic Palaeontology 12(1), 23-92. View article

Westerga°rd, A.H. 1936. Paradoxides oelandicus beds of O¨land with the account of a diamond boring through the Cambrian at Mossberga. Sveriges Geologiska Underso¨kning C394, 1-66.

Westergard, A.H. 1946. Agnostidea of the Middle Cambrian of Sweden. Sveriges Geologiska Undersökning C477, 1-140.

White, C.A. 1874. Preliminary report upon invertebrate fossils collected by the expedition of 1871, 1872 and 1873 with description of new species. Report of the United States Army Geographical and Geological Exploratory Surveys west of the 100th Meridian, 5-27.

Whitehouse, F.W. 1936. The Cambrian faunas of north-eastern Australia, Part 1: Stratigraphical outline; Part 2: Trilobita (Miomera). Memoirs of the Queensland Museum 11, 59-112.

Whitehouse, F.W. 1939. The Cambrian faunas of north-eastern Australia. Part 3: The polymerid trilobites (with supplement no. 1). Memoirs of the Queensland Museum 21, 179-282.

Whittington, H.B. 1988. Hypostomes of post-Cambrian trilobites. New Mexico Bureau of Mines and Mineral Resources, Memoir 44, 321-339.

Whittington, H.B. 1997. Morphology of the exoskeleton, O1-O59. In Kaesler, R.L. (ed.) Treatise on invertebrate paleontology, Part O, Arthropoda 1, Trilobita, revised, Volume 1: Introduction, Order Agnostida, Order Redlichiida. Geological Society of America & University of Kansas Press, Boulder, Colorado & Lawrence, Kansas.

Želízko, J.V. 1897. Beitrag zur Kenntnis des Mittelcambrium von Jinec in Böhmen. Verhandlungen der Keiserlichen-königlichen Reichsanstalt 16, 320-324.

Želízko, J.V. 1911. New data to the study of the Jince Cambrian. Rozpravy České Akademie Věd a Umění, tř. II 20(10), 1-7.