Error vacuo, Detecting Structures in Poorly Calcified Jurassic Dasycladales

Document Type: Original paper (Research paper)


University of Naples Federico II, Department of Earth Sciences, Environment and Resources, Naples, Italy


Several Jurassic dasycladalean genera (e.g. Pseudoclypeina, Palaeodasycladus, Eodasycladus, Chinianella and Cylindroporella) display a complex structure which, owing to a deficit of calcification, is difficult to interpret. This lack of calcification causes a loss of certain soft algal structures and complicates the work of the specialist responsible for interpreting the algal anatomy as well as the corresponding position in the systematics. A key of interpretation is given, and case histories are discussed.


- Barattolo F. and Bigozzi A. (1996). Dasycladaleans and depositional environments of the Upper Triassic-Liassic carbonate platform of the Gran Sasso (Central Apennines, Italy). Facies, 35, 163-208.

- Barattolo F. and Carras N. (1990). Pseudoclypeina distomensis n. sp. (green algae, dasycladales) from the Malm of the Greece. Bollettino della Società paleontologica italiana, 29(2), 145-162.

- Barattolo F., De Castro P. and Radoičić R. (1992). The genus Selliporella Sartoni & Crescenti 1963 (Chlorophyta, Dasycladales) and its type-species. Memorie della Società geologica italiana, 41 (1988), 593-604.

- Barattolo F., Granier B., Romano R. and Ferré B. (2008). Petrascula iberica (Dragastan & Trappe), Tersella genotii Barattolo & Bigozzi, and the relationships of club-shaped dasycladalean algae during Late Triassic-Early Jurassic times. Geologia Croatica Online, 61, 159-176

- Barattolo F., Ionesi V. and Ţibuleac P. (2019). A new polyphysacean alga from the Miocene of Romania and its biomineralization. Acta Palaeontologica Polonica, 64(1), 85-100.

- Barattolo F. and Parente M. (2000). New observation on Uragiella liasica (Lebouché & Lemoine) (Green Algae, Dasycladales) from the type-locality (Canders, Languedoc-Southern France). Bollettino della Società paleontologica italiana, 39(2), 123-137.

- Barattolo F. Shirazi M.P.N. and Vecchio E. (2012). The genus Eodasycladus (Lower Jurassic dasycladalean green alga) and its relationship with Palaeodasycladus. Facies, 58, 445-455.

- Berger S. and Kaever M.J. (1992). Dasycladales. An illustrated monograph of a fascinating algal order. Georg Thieme Verlag, Stuttgart, 247 p.

- De Castro P. (1997). Introduzione allo studio in sezione sottile delle dasicladali fossili. An approach to thin-section studies of fossil Dasycladales. Quaderni dell’Accademia Pontaniana, 22, 1-261.

- Génot P. (1993). Main Dasycladales species of the Mons Basin (Belgium). Bollettino della Società paleontologica italiana, spec. vol. 1, 219-229.

- Lebouché M.C. and Lemoine M. (1963). Dasycladaceés nouvelles du Lias calcaire (Lotharingien) du Languedoc méditerraneén (St. Chinian, Boutenac). Revue de Micropaléontologie, 6, 89-101.

- Pia J. (1920). Die Siphoneae verticillatae von Karbon bis zur Kreide. Abhandlungen. zoologisch- botanischen Gesellschaft in Wien, 11, 1-263.

- Romano R. and Barattolo F. (2009). Note on Sestrosphaera liasina (Pia, 1920) from the Lowermost Jurassic of Malga Mandrielle (type-locality, Southern Alps- Italy). Geobios, 42, 101-115.

- Sokač B. and Nikler L. (1969). Dinarella kochi n. gen., n. sp. (Dasycladaceae) from the Lias of the Velebit Mountains. Geološki Vjesnik, 22 (1968), 303-308.

Volume 1, Issue 1
Winter and Spring 2019
Pages 1-4
  • Receive Date: 28 November 2018
  • Revise Date: 15 January 2019
  • Accept Date: 22 March 2019