Tag: Anisian
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Sauropterygia indet., ?dorsal vertebra, 25/LMK?
Sauropterygia indet. Dating uncertain – Upper Röt or Lower Muschelkalk (Anisian) Upper Silesia, Poland This is a beautiful vertebral specimen, interesting for at least several reasons. Despite erosion, this nearly complete vertebra provides an excellent illustration of vertebral morphology. The preserved features and processes appear consistent with the general anatomy of Sauropterygia (Nothosaurus sp. for example).…
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Sauropterygia indet., metapodial element, 24/LMK
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Sauropterygia indet. (cf. Nothosaurus) Middle Triassic, Lower Muschelkalk (Anisian), Gogolin Beds Upper Silesia, Poland Probably isolated metacarpal or metatarsal bone of an unidentified Sauropterygia (most likely a medium-sized Nothosaurus). Due to the visible slight asymmetry, I think it is most likely one of the outer metacarpals or metatarsals – I or V. The bone is flattened…
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Reptilia indet., medial gastralium, 23/LMK?
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Reptilia indet. Dating uncertain – Upper Röt or Lower Muschelkalk (Anisian) Upper Silesia, Poland The specimen is an incomplete, fragmentary medial gastralium (“abdominal rib”) of an unidentified reptile. As mentioned in another post, the gastralia are non-diagnostic and do not support taxonomic identification. The specimen, although incomplete, clearly illustrates the morphology of these dermal bones. The…
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Reptilia indet., ?cranium element, 22/LMK
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The specimen is a bone or bone fragment from an unidentified reptile. Structure of the bone and its robustness almost certainly rule out fish and amphibians (the lack of ornamentation typical of amphibians).
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Reptilia indet., lateral gastralium, 21/LMK?
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Reptilia indet. Dating uncertain – Upper Röt or Lower Muschelkalk (Anisian) Upper Silesia, Poland The specimen is the lateral gastralium (ventral rib) of an indeterminate reptile. Gastralia were present in almost all Triassic marine reptiles (the exception being Ichthyosauria). Their morphology is very similar, making such specimens non-diagnostic. The specimen is approximately 56 mm long and…
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“Protanystropheus antiquus” cervical vertebra assoc. Reptilia indet. cervical rib, 20/LMK?
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Protanystropheus antiquus (“Tanystropheus antiquus”) is an extremely rare find in Lower Muschelkalk sediments, whose systematic position is still uncertain.
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Placodontia indet., humerus fragment, 19/LMK
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Placodontia indet. Middle Triassic, Lower Muschelkalk (Anisian), Gogolin Beds Upper Silesia, Poland The specimen is most likely a distal fragment of a humerus (upper arm bone). The broad, flattened head and the strongly pachyostotic bone structure indicate a placodont. A distinct groove is visible on the left side of the head, a feature noted by…
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Nothosaurus sp., left coracoid, 18/LMK
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Specimen of Nothosaurus sp., left coracoid in ventral view. Lower Muschelkalk, Gogolin Beds, Upper Silesia, Poland
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Nothosaurus sp., vertebral neural arch, 17/LMK
Nothosaurus sp. Neural arch. Gogolin Beds. Upper Silesia. Poland – The specimen is a beautifully preserved neural arch (in dorsal view). Considering its shape and size, it can be fairly safely assigned to the genus Nothosaurus.
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Ichthyosauria indet. (cf. Mixosauridae), vertebra centrum, 16/LMK
Ichthyosauria indet. (cf. Mixosaurus sp.) Middle Triassic, Lower Gogolin Beds, Upper Silesia, Poland Ichthyosaur remains are extremely rare in the Muschelkalk deposits of Upper Silesia. The photos show a single vertebral centrum – though slightly damaged, it clearly displays the diagnostic features that allow for its assignment to this group of extinct marine reptiles (most…