Ammonite biostratigraphy as a tool for dating Upper Jurassic lithographic limestones from South Germany first results and open questions

Schweigert, Günter

doi:10.1127/0077-7749/2007/0245-0117

Cited by 102 publications

(99 citation statements)

References 2 publications

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“…Locality uncertain, Bavaria, Germany (Jaekel 1904); Solnhofen Formation, early Tithonian, Late Jurassic (Schweigert 2007). / 38 62 POSTPRINT Comments.…”

Section: Cyrtura Temnospondyla Jaekel 1904mentioning

confidence: 99%

“…Kelheim, Bavaria, Germany (Meyer 1839a(Meyer , 1839b; Figure 4); Solnhofen Formation, early Tithonian, Late Jurassic (Schweigert 2007 Diagnosis. Idiochelys fitzingeri can be diagnosed as a "eurysternid" by the full list of characters provided for that taxon above.…”

Section: Postprintmentioning

confidence: 99%

“…Lithographic limestone quarries of Solnhofen, Bavaria, Germany (Meyer 1854(Meyer , 1860; Figure 4); Solnhofen Formation, early Tithonian, Late Jurassic (Schweigert 2007). …”

Section: Acichelys Redenbacherimentioning

confidence: 99%

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A review of the fossil record of turtles of the clade Thalassochelydia

Anquetin¹,

Püntener²,

Joyce³

2017

Preprint

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POSTPRINTThis is a postprint of the following peer-reviewed publication: AbstractThe Late Jurassic (Oxfordian to Tithonian) fossil record of Europe and South America has yielded a particularly rich assemblage of aquatic pan-cryptodiran turtles that are herein tentatively hypothesized to form a monophyletic group named Thalassochelydia. Thalassochelydians were traditionally referred to three families, Eurysternidae, Plesiochelyidae, and Thalassemydidae, but the current understanding of phylogenetic relationships is insufficient to support the monophyly of either group. Given their pervasive usage in the literature, however, these three names are herein retained informally. Relationships with marine turtles from the Cretaceous have been suggested in the past, but these hypotheses still lack strong character support. Thalassochelydians are universally found in near-shore marine sediments and show adaptations to aquatic habitats, but isotopic evidence hints at a broad spectrum of specializations ranging from freshwater aquatic to fully marine. A taxonomic review of the group concludes that of 68 named taxa, 27 are nomina valida, 18 are nomina invalida, 18 are nomina dubia, and 5 nomina oblita.

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“…Locality uncertain, Bavaria, Germany (Jaekel 1904); Solnhofen Formation, early Tithonian, Late Jurassic (Schweigert 2007). / 38 62 POSTPRINT Comments.…”

Section: Cyrtura Temnospondyla Jaekel 1904mentioning

confidence: 99%

Section: Postprintmentioning

confidence: 99%

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A review of the fossil record of turtles of the clade Thalassochelydia

Anquetin¹,

Püntener²,

Joyce³

2017

Preprint

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“…He placed the "Kelsbach-Schiefer" within his "Malm Zeta 2 K" (comparable to the upper part of the Solnhofen Formation) and the 15 m thick beds above the upper slump unit to the "Malm Zeta 3 H" (comparable to the Maernsheim Formation: Lower Tithonian, hybonotum Zone, moernsheimensis Subzone; cf. Schweigert 2007). To present date, the Plattenkalk of Ettling have not yielded determinable ammonites.…”

Section: Facies Stratigraphy and Possible Agementioning

confidence: 99%

“…Therefore a detailed biostratigraphical analysis is missing. Schweigert (2007) assumed that the environment was too shallow and thus unfavourable for ammonites.…”

Section: Facies Stratigraphy and Possible Agementioning

confidence: 99%

The first record of Late Jurassic crossognathiform fishes from Europe and their phylogenetic importance for teleostean phylogeny

Arratia

Tischlinger²

2010

Fossil Record

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A juvenile pleurosaurid (Lepidosauria: Rhynchocephalia) from the Tithonian of the Mörnsheim Formation, Germany

Beccari,

Villa,

Jones

et al. 2024

The Anatomical Record

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Late Jurassic rhynchocephalians from the Solnhofen Archipelago have been known for almost two centuries. The number of specimens and taxa is constantly increasing, but little is known about the ontogeny of these animals. The well‐documented marine taxon Pleurosaurus is one of such cases. With over 15 described (and many more undescribed) specimens, there were no unambiguous juveniles so far. Some authors have argued that Acrosaurus, another common component of the Solnhofen Archipelago herpetofauna, might represent an early ontogenetic stage of Pleurosaurus, but the lack of proper descriptions for this taxon makes this assignment tentative, at best. Here, we describe the first unambiguous post‐hatchling juvenile of Pleurosaurus and tentatively attribute it to Pleurosaurus cf. P. ginsburgi. The new specimen comes from the Lower Tithonian of the Mörnsheim Formation, Germany. This specimen is small, disarticulated, and incomplete, but preserves several of its craniomandibular bones and presacral vertebrae. It shares with Pleurosaurus a set of diagnostic features, such as an elongated and triangular skull, a low anterior flange in its dentition, and an elongated axial skeleton. It can be identified as a juvenile due to the presence of an unworn dentition, well‐spaced posteriormost dentary teeth, a large gap between the last teeth and the coronoid process of the dentary, and poorly ossified vertebrae with unfused neural arches. Acrosaurus shares many anatomical features with both this specimen and Pleurosaurus, which could indicate that the two genera are indeed synonyms. The early ontogenetic stage inferred for the new Pleurosaurus specimen argues for an even earlier ontogenetic placement for specimens referred to Acrosaurus, the latter possibly pertaining to hatchlings.

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Ammonite biostratigraphy as a tool for dating Upper Jurassic lithographic limestones from South Germany first results and open questions

Cited by 102 publications

References 2 publications

A review of the fossil record of turtles of the clade Thalassochelydia

A review of the fossil record of turtles of the clade Thalassochelydia

The first record of Late Jurassic crossognathiform fishes from Europe and their phylogenetic importance for teleostean phylogeny

A juvenile pleurosaurid (Lepidosauria: Rhynchocephalia) from the Tithonian of the Mörnsheim Formation, Germany

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