scholarly journals Hypowaagenia nov. gen., a rare genus of giant aspidoceratid ammonite from the Upper Jurassic of Southern Germany

2020 ◽  
Vol XVIII (1) ◽  
Author(s):  
Günter Schweigert ◽  
◽  
Victor Schlampp ◽  
◽  
Keyword(s):  
Upper Jurassic ◽  
Southern Germany

scholarly journals On a remarkable new species of <i>Tharsis</i>, a Late Jurassic teleostean fish from southern Germany: its morphology and phylogenetic relationships

Fossil Record ◽  
2019 ◽  
Vol 22 (1) ◽  
pp. 1-23 ◽  
Author(s):  
Gloria Arratia ◽  
Hans-Peter Schultze ◽  
Helmut Tischlinger
Keyword(s):  
New Species ◽  
Late Jurassic ◽  
Strong Support ◽  
Sister Group ◽  
Common Species ◽  
Upper Jurassic ◽  
Morphological Characters ◽  
Morphological Description ◽  
Sister Group Relationship ◽  
Southern Germany

Abstract. A complete morphological description, as preservation permits, is provided for a new Late Jurassic fish species (Tharsis elleri) together with a revision and comparison of some morphological features of Tharsis dubius, one of the most common species from the Solnhofen limestone, southern Germany. An emended diagnosis of the genus Tharsis – now including two species – is presented. The new species is characterized by a combination of morphological characters, such as the presence of a complete sclerotic ring formed by two bones placed anterior and posterior to the eye, a moderately short lower jaw with quadrate-mandibular articulation below the anterior half of the orbit, caudal vertebrae with neural and haemal arches fused to their respective vertebral centrum, and parapophyses fused to their respective centrum. A phylogenetic analysis based on 198 characters and 43 taxa is performed. Following the phylogenetic hypothesis, the sister-group relationship Ascalaboidae plus more advanced teleosts stands above the node of Leptolepis coryphaenoides. Both nodes have strong support among teleosts. The results confirm the inclusion of Ascalabos, Ebertichthys and Tharsis as members of this extinct family. Tharsis elleri n. sp. (LSID urn:lsid:zoobank.org:act:6434E6F5-2DDD-48CF-A2B1-827495FE46E6, date: 13 December 2018) is so far restricted to one Upper Jurassic German locality – Wegscheid Quarry near Schernfeld, Eichstätt – whereas Tharsis dubius is known not only from Wegscheid Quarry, but also from different localities in the Upper Jurassic of Bavaria, Germany, and Cerin in France.

The first complete skeleton of Solnhofia parsonsi (Cryptodira, Eurysternidae) from the Upper Jurassic of Germany and its taxonomic implications

2000 ◽  
Vol 74 (4) ◽  
pp. 684-700 ◽  
Author(s):  
Walter G. Joyce
Keyword(s):  
Posterior Margin ◽  
Carapace Length ◽  
Upper Jurassic ◽  
Complete Understanding ◽  
Southern Germany ◽  
Postcranial Morphology ◽  
Large Head ◽  
History Of ◽  
Taxonomic Implications ◽  
Tooth Marks

A complete skeleton of Solnhofia parsonsi (Cryptodira, Eurysternidae) from the Kimmeridgian/Tithonian boundary of Schamhaupten, Germany provides the first complete understanding of the postcranial morphology of this genus. The here newly described postcranial characters are important in distinguishing Solnhofia from shell-based genera and thus help in resolving part of the parataxonomic conflict between shell-based and cranium-based turtle genera. This disparity originated during the last 150 years due to the history of fossil finds, preparation, and changing interests of researchers. Synonymies of Solnhofia with such turtle genera as Eurysternum, Idiochelys, Plesiochelys, Thalassemys, and Euryaspis can now be refuted. Similarities with Hydropelta are apparent, but not considered sufficient to support a synonymy. Newly observed or confirmed characters include the relatively large head (40 percent of the carapace length), the pentagonal carapace, the unique arrangement of bones and fontanelles in the pygal region, and the absence of mesoplastra, epiplastra, and an entoplastron.The carcass of the new specimen was embedded in finely laminated limestones and shows little sign of disintegration or scavenging, suggesting hostile bottom conditions with very low water energy during deposition. This taphonomy agrees with recent published models for the origin of the lithographic limestones of southern Germany. Tooth marks along the posterior margin of the carapace are evidence of predation by a broad-nosed crocodilian. This is the first clear example for this type of predatorial interaction from the Upper Jurassic of Germany.

Subbdelloidina luterbacheri sp. nov. (Foraminifera) from Kimmeridgian to Tithonian (Upper Jurassic) sponge-algal facies of Southern Germany

PalZ ◽  
1987 ◽  
Vol 61 (1-2) ◽  
pp. 29-40 ◽  
Author(s):  
Wolfgang Riegraf
Keyword(s):  
Upper Jurassic ◽  
Southern Germany

scholarly journals A microconchiate Hypowaagenia Schweigert and Schlampp, 2020 (Aspidoceratidae, Hybonoticeratinae) from the Upper Jurassic of Southern Germany

2020 ◽  
pp. 115-120
Author(s):  
Günter Schweigert ◽  
Victor Schlampp
Keyword(s):  
Upper Jurassic ◽  
Southern Germany

A new caridean shrimp (Crustacea: Decapoda) from the Solnhofen Lithographic Limestones (Upper Jurassic, southern Germany)

2020 ◽  
Vol 295 (2) ◽  
pp. 117-128
Author(s):  
Norbert Winkler
Keyword(s):  
Upper Jurassic ◽  
Caridean Shrimp ◽  
Southern Germany ◽  
High Diversity

A new caridean shrimp, Hefriga schlechtingerae n. sp., is described from the Upper Jurassic Solnhofen Lithographic Limestones (Altmühltal Formation, Eichstätt Member; Lower Tithonian, Hybonotum Zone). It adds to the surprisingly high diversity of carideans in the Solnhofen Archipelago.

An array of sixth abdominal tergite types of paguroid anomurans (Crustacea) from the mid-Cretaceous of Navarra, northern Spain

2013 ◽  
Vol 92 (2-3) ◽  
pp. 109-117 ◽  
Author(s):  
R.H.B. Fraaije ◽  
P. Artal ◽  
B.W.M. van Bakel ◽  
J.W.M. Jagt ◽  
A.A. Klompmaker
Keyword(s):  
Early Cretaceous ◽  
Abdominal Tergite ◽  
Upper Jurassic ◽  
Hermit Crabs ◽  
New Genera ◽  
Northern Spain ◽  
Southern Germany ◽  
Southern Poland

AbstractIn recent years, a range of operculate sixth abdominal tergite types of pylochelid and parapylochelid hermit crabs (Anomura, Paguroidea) have been recorded from Upper Jurassic (Oxfordian and Kimmeridgian) strata in southern Poland and southern Germany. Here we add two new genera (Parapylochelitergites, Paguritergites) and four new late Early Cretaceous species (Parapylochelitergites pustulosus, Pylochelitergites alatus, Pylochelitergites rugosus and Paguritergites yvonnecooleae) from Navarra, northern Spain. In the reefal limestones at Koskobilo quarry near Alsasua, of late Albian age, the number of sixth abdominal paguroid tergite taxa approximates that of paguroid carapace types. Thus, linking fossil paguroid carapaces to tergites can now be attempted. Assemblages of symmetrical hermit crabs (parapylochelids and pylochelids) in reefal settings appear to have changed drastically from the late Albian onwards, with asymmetrical forms (Diogenidae, Paguridae) becoming predominant.

Sign in / Sign up

Export Citation Format

Share Document