Altmühltal: neue Schildkrötenfunde im Plattenkalk

Karl, Hans‐Volker; Tichy, Gottfried

doi:10.1002/biuz.200690061

Cited by 7 publications

(10 citation statements)

References 1 publication

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“…There is therefore no evidence for the formation of a paddle, a conclusion informally supported by the complete skeleton of P. oberndorferi held in a private collection (Karl and Tichy 2006). The bone microstructure of P. oberndorferi is typical for turtles with only moderate adaptations to aquatic environments (Scheyer 2009) and the large costovertebral tunnel, large hyoids (only visible in the privately held specimen) and shell decorations are reminiscent of the extant Macrochelys temminckii (alligator snapping turtle) and Chelus fimbriata (matamata turtle), which are gape and suction feeders dependent on shallow waters, a resemblance already noted by Rütimeyer (1873).…”

Section: Paleoecologymentioning

confidence: 89%

“…Primarily due to the excellent preservation of the Solothurn material, Platychelys oberndorferi most certainly is one of the best-studied turtles from the Late Jurassic of Europe, although it is unfortunate that much of the excellent material available has not been properly figured and described. A complete skeleton recently reported from the Late Jurassic (Tithonian) of Eichstätt provides enticing insights into the nonshell anatomy of this taxon (Karl and Tichy 2006) but unfortunately resides in private hands and therefore cannot be utilized for scientific studies.…”

Section: Platychelys Oberndorferimentioning

confidence: 99%

“…Almost a century after these discoveries, Bräm (1965) summarized all Swiss material of P. oberndorferi available to him, provided a schematic reconstruction and named the taxon Platychelyidae. A beautifully preserved, complete skeleton of a P. oberndorferi was reported by Karl and Tichy (2006) from the Late Jurassic (Tithonian) of Eichstätt, Germany, but this specimen remains in private hands and is therefore not explicitly discussed herein.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Review of the Fossil Record of Turtles of the CladesPlatychelyidaeandDortokidae

Cadena

Joyce

2015

Bulletin of the Peabody Museum of Natural History

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The fossil record of platychelyid turtles expands from the Late Jurassic (Oxfordian) of Cuba to the Early Cretaceous (Valanginian) of Colombia. Platychelyids were adapted to freshwater to coastal environments. Current phylogenies confidently suggest that platychelyids are situated along the stem lineage of crown Pleurodira. A taxonomic review of the group concludes that of six named "platychelyid" taxa, four are valid and two are nomina nuda. Dortokids are a poorly understood group of freshwater aquatic turtles that are restricted to the Early Cretaceous (Barremian) to Eocene (Lutetian) of Europe. The phylogenetic position of the group is still under debate, but there is some evidence that these turtles are positioned along the stem lineage of crown Pleurodira as well. A taxonomic review of the group concludes that of four named dortokid taxa, two are valid, one is a nomen invalidum and one a nomen nudum.

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Section: Paleoecologymentioning

confidence: 89%

Section: Platychelys Oberndorferimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Review of the Fossil Record of Turtles of the CladesPlatychelyidaeandDortokidae

Cadena

Joyce

2015

Bulletin of the Peabody Museum of Natural History

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“…The first described member of the Platychelyidae was Platychelys oberndorferi Wagner, , now recognized in the Upper Jurassic (Kimmeridgian–Tithonian) of Germany and Switzerland (Karl & Tichy ). This was followed by the first platychelyid to be found outside Europe, Notoemys laticentralis Cattoi & Freiberg, (subsequently described by de la Fuente & Fernández ; Fernández & de la Fuente 1994; Lapparent de Broin et al .…”

mentioning

confidence: 99%

A new platychelyid turtle (Pan‐Pleurodira) from the Late Jurassic (Kimmeridgian) of Oaxaca, Mexico

López-Conde

Sterli

Alvarado‐Ortega

et al. 2016

Papers in Palaeontology

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Until recently, the record of Mesozoic turtles in Mexico has been restricted to the Cretaceous. New discoveries in the Sabinal Formation (Tlaxiaco, Oaxaca) have extended the record into the Kimmeridgian (Late Jurassic). The Sabinal Formation is part of the Tlaxiaco Basin, which was a depocenter of continental and marine sediments dominated by transgressive‐regressive marine conditions during the Jurassic–Cretaceous. The new turtle described here consists of an almost complete carapace associated with a plastron. Based on the unique combination of characters, this turtle is identified as a new species of Platychelyidae here named Notoemys tlaxiacoensis. Platychelyid characters in this specimen include the presence of the sulcus between vertebral 3 and 4 located on neural 6, the presence of a central plastral fontanelle, and a pair of reduced mesoplastra. The occurrence of Kimmeridgian platychelyids in Mexico confirms that the Hispanic Corridor acted as a connection between Tethyan and Palaeopacific faunas.

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“…Most Late Jurassic basal pancryptodiran and panpleurodiran taxa known from complete, articulated specimens (e.g. Joyce , ; Karl & Tichy ) do not show any hint of modified appendicular morphology. The short autopodia exhibit moderately elongated phalanges (not as short as in some terrestrial taxa) and well‐developed claws.…”

mentioning

confidence: 99%

Derived appendicular morphology in Early Cretaceous aquatic turtles evidenced by the track record

Hornung

Reich

2013

LET

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A well-preserved isolated manus impression evidences the presence of derived aquatic adaptations in the forelimb morphology of Berriasian turtles. Size and the abundant co-occurring turtle fauna indicate that the track was left by a large-sized, bottomwalking basal pancryptodiran. The footprint shows an interesting mosaic of primitive and derived features. The basic turtle pattern is reflected by a short and broad autopodium but thin phalanges, claw reduction and extensive webbing enclosing the digits and lateral and medial margins of the distal metapodium are clearly specialized features related to the aquatic environment. Some characters including the proportional elongation of the first digit, which reached as far distally as the other digits and was probably highly mobile at the metacarpal-phalangeal joint, indicate an even higher degree of specialization. The specimen gives evidence on a hitherto unknown range of appendicular modification in Early Cretaceous turtles, and redundantly proves the aquatic habitat and locomotion of large-sized turtles from the Berriasian of northwestern Germany. □ Appendicular morphology, aquatic habitat, Cryptodira, early Cretaceous, track.Jahn J. Hornung [jhornun@gwdg.de], Geowissenschaftliches Zentrum der Georg-August-

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Altmühltal: neue Schildkrötenfunde im Plattenkalk

Cited by 7 publications

References 1 publication

A Review of the Fossil Record of Turtles of the CladesPlatychelyidaeandDortokidae

A Review of the Fossil Record of Turtles of the CladesPlatychelyidaeandDortokidae

A new platychelyid turtle (Pan‐Pleurodira) from the Late Jurassic (Kimmeridgian) of Oaxaca, Mexico

Derived appendicular morphology in Early Cretaceous aquatic turtles evidenced by the track record

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