Article Search
Volume 27.1
January–April 2024
Full table of contents
ISSN: 1094-8074, web version;
1935-3952, print version
Recent Research Articles
See all articles in 27.1 January-April 2024
See all articles in 26.3 September-December 2023
See all articles in 26.2 May-August 2023
See all articles in 26.1 January-April 2023
FIGURE 1. Studied area - the southern Polish Uplands, northwest of Cracow (Poland). The abbreviations of the localities B - Bzów, G - Grabowa, K - Kroczyce, N - Niegowonice, O - Ogrodzieniec and W - Wysoka (modified after Głowniak, 2006, figure 2).
FIGURE 2. 1 . Groundplan of the morphological structures in the species of Eodromites on the example of E . aequilatus. 2. Reconstruction of the carapace of described species of Eodromites , reconstruction of E. dobrogea is based on pictures of other authors (Feldmann et al., 2006, figure 3.10; Schweitzer et al., 2007, figure 4.3; Schweitzer and Feldmann, 2010, figure 5.4-6). 3. Comparision of shape and length of augenrest in the studied species of Eodromites . Dashed line - horizontal axis of the augenrest.
FIGURE 3. Ratio of the AtC and RtC distance in studied species of the genus Eodromites .
FIGURE 4. Eodromites grandis 1. Groups of hepatic pits (hp) on the hepatic region (3604, Bzów). 2. Rostrum (4874, Niegowonice). 3. Lateral margin covered with serrations (6259, Ogrodzienic). 4. Hepatic tubercles (ht) in the hepatic groove (4244, Ogrodzieniec). 5. Carapace (6259). 6. Mesogastric region, cervical pits (cp), hepatic tubercles (ht) (928, Niegowonice). 7. Lateral view (6255, Niegowonice). 8. Augenrest, anterior view (6259). Scale bars equal 1 mm.
FIGURE 5. Eodromites aequilatus 1. Rostrum and augenrest, dorsal view, pit (I) on the upper orbital margin (IGPUW C/1/26, Antonie). 2. Serrations on the lateral and upper orbital margin, pit on the upper orbital margin (I), groups of hepatic pits (hp) (SMNS70011/2, Stetten). 3. Groups of hepatic pits (hp) (3558). 4. Carapace (IGPUW C/1/11, Holly Cross Mountains). 5. Mesogastric region, cervical pits (cp), hepatic tubercles (ht), tubercles between cardiac and hepatic groove (hct) (SMNS70011/1, Stetten). 6. Pits on the epibranchial region next to cervical groove (II) and branchio-cardiac groove (III) (IGPUW C/1/27, Zalesiaki). 7. Carapace, groups of hepatic pits (hp) on the hepatic region, pit (I) on the upper orbital margin (3558, Bzów). 8. Augenrest, anterior view (IGPUW C/1/26). 9. Augenrest, anterior view (SMNS70011/2). 10. Lateral view (IGPUW C/1/11). Scale bars equal 1 mm.
FIGURE 6. Eodromites rotundus n. sp. 1. Paratype, rostrum - dorsal view (3992, Ogrodzieniec). 2. Paratype, rostrum - dorsal view (6270, Ogrodzieniec). 3. Groups of hepatic pits (hp) on the hepatic region (2237, Bzów). 4. Carapace - paratype, cervical pits (cp) (3992). 5. Carapace - paratype, cervical pits (6270). 6. Augenrest, anterior view (619, Ogrodzieniec). 7. Holotype - augenrest, anterior view (6271, Ogrodzieniec). 8. Holotype, lateral view (6271). Scale bars equal 1 mm.
FIGURE 7. Eodromites hyznyi n. sp. 1. Holotype, suborbital margin marked with an arrow (4973, Niegowonice). 2. Paratype, cervical pits (cp) (3468, Bzów). 3. Paratype, lateral view, groove parallel to branchio-cardiac groove marked with an arrow (3468). 4. Paratype, augenrest, I - pit on the upper orbital margin (3468). Scale bars equal 1 mm.
FIGURE 8. Eodromites guenteri n. sp., holotype 1. Rostrum, dorsal view, pit on the upper orbital margin (I) (SMNS61668/4, Blaubeuren). 2. Mesogastric region, cervical pits (cp), hepatic tubercles (ht), tubercles between cervical and hepatic groove (hct). 3. Pits: I - on the upper orbital margin, on the epibranchial region next to the cervical groove (II) and the branchio-cardiac groove (III). 4. Carapace. 5. Groups of hepatic pits on the hepatic region (hp). 6. Mesogastric region, cervical pits (cp), hepatic tubercles (ht). 7. Augenrest, anterior view. 8. Carapace, lateral view. Scale bars equal 1 mm.
Natalia Starzyk. Institute of Systematics and Evolution of Animals, Polish Academy of Sciences; ul. Sławkowska 17; 31-016 Kraków, Poland; natalia_slaby@wp.pl
Dr Natalia Starzyk is has recently gained her PhD from the International Doctoral Studies in Natural Sciences at the Polish Academy of Sciences in Kraków. Jurassic crabs from Polish Jura localities were the subject of her PhD dissertation. In 2014 she started working in the Institute of Systematics and Evolution of Animals of Polish Academy of Sciences. Her research is currently focused on the evolution and diversity of first crabs on European localities.
TABLE 1. Type material of all species of the genus Eodromites (* type material of Eodromites dobrogea was studied on pictures in Feldmann et al., 2006, figure 3.10; Schweitzer et al., 2007, figure 4.3; Schweitzer and Feldmann, 2010, figure 5.4-6).
TABLE 2. Stratigrafic age of the studied localities in the Polish Upland (based upon references cited in Starzyk et al., 2012 and Starzyk, 2013).
TABLE 3. Key to species: E. depressus, E. nitidus, E. polyphemi and E. rostratus are included only tentatively, based only on original drawings, as the material had been lost.
Reappraisal of the primitive crab Eodromites, with description of three new species from European localities (Decapoda: Brachyura: Goniodromitidae)
Plain Language Abstract
An exquisite, recently acquired collection of crabs from the Upper Jurassic (about 7 000 specimens) is situated in Museum of Natural History of Institute of Systematics and Evolution of Animals, Polish Academy of Sciences. It is one of the biggest collections of Jurassic crabs in the world, possibly except the collection in the Naturhistorisches Museum in Vienna. The specimens come from eight Upper Jurassic localities in the region of the Polish Jura Chain. Such a great number of specimens allows us to identify more repetitive features, which are significant in distinguishing species and genera.
Resumen en Español
Reevaluación de los primitivos cangrejos Eodromites, con la descripción de tres nuevas especies de localidades europeas (Decapoda: Brachyura: Goniodromitidae)
El género de braquiuros Eodromites es abundante en localidades del Jurásico de Europa. Hasta ahora se han atribuido siete especies a Eodromites, pero solo se conoce el material tipo de tres de ellas. Cuatro especies están presentes en localidades del Oxfordiense de Polonia, incluyendo dos nuevas especies: E. rotundus n. sp. y E. hyznyi n. sp. Se describe una nueva especie del Kimmeridgiense de Alemania - E. guenteri n. sp. Se describen nuevas características para el género y las especies (ranuras anteriores, grupos de fosas hepáticas, tubérculos hepáticos, tres pares de fosas, y la longitud y la forma de la estructura denominada augenrest o falsa órbita).
Palabras clave: Eodromites, Homolodromioidea, Brachyura, Decapoda, nuevas especies, Jurásico, Oxfordiense
Traducción: Enrique Peñalver or Diana Elizabeth Fernández
Résumé en Français
Révision du crabe primitif Eodromites (Decapoda : Brachyura : Goniodromitidae) incluant la description de trois nouvelles espèces provenant de localités européennes
Le genre de brachyoure Eodromites est trouvé en abondance dans les localités jurassiques d'Europe. Jusqu'à présent, sept espèces avaient été attribuées à Eodromites, mais le matériel type de seulement trois d'entre elles est connu. Quatre espèces sont présentes dans les localités oxfordiennes de Pologne, notamment deux nouvelles espèces : E. rotundus n. sp. et E. hyznyi n. sp. Une nouvelle espèce du Kimméridgien d'Allemagne est également décrite : E. guenteri n. sp. De nouveaux caractères (sillons antérieurs, groupes de ponctuations hépatiques, tubercules hépatiques, trois paires de ponctuations, longueur et forme de l'augenrest) pour le genre et les espèces sont décrits.
Mots-clés : Eodromites ; Homolodromioidea ; Brachyura ; Decapoda ; nouvelle espèce ; Jurassique ; Oxfordien
Translator: Antoine Souron
Deutsche Zusammenfassung
Neubewertung der primitive Krabbe Eodromites, mit einer Beschreibung von drei neuen Arten aus europäischen Fundstellen (Decapoda: Brachyura: Goniodromitidae)
Die brachyure Gattung Eodromites kommt in jurassischen Fundstellen von Europa häufig vor. Sieben Arten sind Eodromites bis jetzt zugeschrieben, jedoch ist nur das Typenmaterial von dreien bekannt. Vier Arten treten in Fundstellen des polnischen Oxfordiums auf, inklusive zwei neue: E. rotundus n. sp. und E. hyznyi n. sp. Eine neue Art aus dem Kimmeridgium von Deutschland wird beschrieben - E. guenteri n. sp. Neue Merkmale (anteriore Furchen, Gruppen von hepatischen Gruben, hepatische Tuberkel, drei Paare von Gruben, Länge und Form des Augenrests) der Gattung und Art werden beschrieben.
Schlüsselwörter: Eodromites, Homolodromioidea, Brachyura, Decapoda, neue Art, Jura, Oxfordium
Translator: Eva Gebauer
Arabic
Translator: Ashraf M.T. Elewa
-
Review: The Princeton Field Guide to Mesozoic Sea Reptiles
The Princeton Field Guide to Mesozoic Sea Reptiles
Article number: 26.1.1R
April 2023 -