PE Addendum to: The first plesiosaurian (Sauropterygia, Pliosauridae) remains described from the Jurassic of Poland

Dean R. Lomax


Dean R. Lomax. School of Earth, Atmospheric and Environmental Sciences, The University of Manchester, Oxford Rd, Manchester, M13 9PL, UK. This email address is being protected from spambots. You need JavaScript enabled to view it.

Original article: Lomax, D. R. 2015. The first plesiosaurian (Sauropterygia, Pliosauridae) remains described from the Jurassic of Poland. Palaeontologia Electronica 18.2.29A: 1-8
9 May 2016

Whilst studying plesiosaurian remains described and figured in Lomax (2015), the literature was exhaustively searched for descriptions of plesiosaurians from Poland, with a primary focus on Jurassic specimens. Upon assessment of the published record, and information provided from colleagues, it appeared no plesiosaur fossils from the Jurassic of Poland had been previously published. However, it has since been brought to my attention that fragmentary jaws of two plesiosaurs from the Jurassic (Oxfordian) of Załęcze Wielkie on the Warta, and Mirów near Częstochowa, Poland, were described by Maryańska (1972).


Maryanska, T. 1972, Aberrant plesiosaurs from the Oxfordian of Poland. Polska Akademia Nauk Muzeum Ziemi Prace Paleozoologiczne, 20, 201-206.

Print Email

The first plesiosaurian (Sauropterygia, Pliosauridae) remains described from the Jurassic of Poland

Dean R. Lomax

Plain Language Abstract

This is the first report of plesiosaur remains from the Jurassic of Poland. Plesiosaurs are extinct. They were unusual marine reptiles that possessed two 'general' body plans: 1) a long neck, small skull and long body; 2) a short neck, massive skull and long body. Many plesiosaur specimens have been found and described throughout Europe but they are rare from Poland. The described specimens consist of three isolated teeth, one of which is an incomplete tooth crown lacking the apex. They were collected from a famous locality called Zalas, close to Kraków, in southern Poland. The specimens date to the Late Jurassic (Oxfordian) and are around 160 million years old.

Resumen en Español

Los primeros restos de plesiosaurios (Sauropterygia, Pliosauridae) descriptos en el Jurásico de Polonia

Los restos de plesiosaurios son extremadamente escasos en Polonia. Aquí se registra la primera ocurrencia del grupo, documentada con certeza, en el Jurásico de Polonia. Los especímenes comprenden tres dientes aislados de un pliosáurido (Pliosauridae, Thalassophonea). Éstos fueron hallados en sedimentos del Jurásico Superior (Oxfordiano inferior) y colectados de la Cantera Zalas, cerca de Cracovia, en Polonia meridional. Desde los años de 1800s, se han colectado fósiles en cercanías al área de Zalas, pero ningún registro de restos de vertebrados ha sido descripto previamente.

Palabras clave: Polonia; pliosáurido; Plesiosauria; reptil marino; Jurásico Superior; Oxfordiano

Traducción: Diana Elizabeth Fernández

Résumé en Français

Description des premiers restes de plésiosaures (Sauropterygia, Pliosauridae) provenant du Jurassique de Pologne

Les restes de plésiosaures sont extrêmement rares en Pologne. La première occurrence de ce groupe documentée de manière certaine est reportée dans cet article à partir de fossiles provenant du Jurassique de Pologne. Les spécimens comprennent trois dents isolées d'un pliosauridé (Pliosauridae, Thalassophonea). Ils ont été trouvés dans des sédiments du Jurassique supérieur (Oxfordien inférieur) et ont été collectés dans la carrière de Zalas, près de Kraków, dans le sud de la Pologne. Bien que des fossiles aient été collectés dans les environs de la zone de Zalas depuis le XIXe siècle, aucun reste de vertébrés n'avait été reporté et décrit jusqu'à présent.

Mots-clés : Pologne ; pliosauridé ; Plesiosauria ; reptile marin ; Jurassique supérieur ; Oxfordien

Translator: Antoine Souron

Deutsche Zusammenfassung

Eine erste Beschreibung von Plesiosaurier-Überresten (Sauropterygia, Pliosauridae) aus dem Jura von Polen

Überreste von Plesiosauriern sind in Polen extrem selten. Hier wird das erste sichere Auftreten dieser Gruppe aus dem Jura von Polen beschrieben. Die Stücke bestehen aus drei isolierten Zähnen eines Pliosauriden (Pliosauridae, Thalassophonea). Sie wurden in Sedimenten des Oberen Jura (unteres Oxfordium) im Zalas Steinbruch nahe Krakau im südlichen Polen gefunden. Fossilien aus der Gegend von Zalas werden seit 1800 gesammelt, jedoch wurden bis jetzt noch keine Wirbeltier-Überreste von beschrieben.

Schlüsselwörter: Polen; Pliosauride; Plesiosauria; marine Reptilien; Oberer Jura; Oxfordium

Translator: Eva Gebauer


Translator: Ashraf M.T. Elewa



FIGURE 1. Geographical location and geological exposures of the area around Zalas, southern Poland. Modified slightly from Jurkowska and Kolodziej (2012, figure 1).


FIGURE 2. Mesial view of the tooth crown of GM001. Note the coarse longitudinal ridges and recurved apex. Scale bar measures 10 mm.


FIGURE 3. 1. Lingual view of the entire tooth of GM002. 2. Enlarged close-up of tooth crown in mesial view. Scale bar measures 10 mm.


FIGURE 4. 1. ?Lingual view of the tooth crown of GM003. 2. ?Labial view of tooth crown with missing enamel and less prominent ridges. 3. Underside of tooth displaying circular cross section. Scale bar measures 10 mm.




authorDean R. Lomax
School of Earth, Atmospheric and Environmental Sciences
The University of Manchester
Oxford Rd
Manchester, M13 9PL
and Doncaster Museum & Art Gallery
Chequer Rd
Doncaster, DN1 2AE,
This email address is being protected from spambots. You need JavaScript enabled to view it.

Dean Lomax is a palaeontologist from Doncaster, England. Dean works on palaeontological projects across the world. He researches fossils and writes books (e.g. Dinosaurs of the British Isles), articles and peer-reviewed scientific papers, which include the description of new species. He is an Honorary Visiting Scientist at The University of Manchester, UK and an Honorary Research Associate at Doncaster Museum & Art Gallery. You can find out more about Dean and his background on his website: