User:Ta-tea-two-te-to/sandbox

{{User sandbox}}

{{Short description|Early Permian-age geologic formation in Germany}}

{{Infobox rockunit

| name = Meisenheim Formation

| image = DreiHaieFossilDesJahres2011.JPG

| caption = Fossil specimens of xenacanthid Lebachacanthus from Meisenheim Formation

| type = Geological formation

| age = Early Permian, {{fossil range|Asselian|Sakmarian}}

| period = Asselian

| prilithology = Black shale, sandstone, siltstone, mudstone

| otherlithology =

| namedfor = Meisenheim town

| namedby =

| region = {{Flag|Saarland}}

| country = {{GER}}

| unitof =

| subunits =

| underlies = Lauterecken Formation

| overlies = Disibodenberg Formation

| thickness =

| extent =Saar-Nahe Basin

| area =

| map =

| map_caption =

}}

The Meisenheim Formation is an Early Permian geologic formation in southwest Germany. It consists of black shale as well as sandstone, siltstone and mudstone. This Formation consists of two units, the lower Jeckenbach-Unit and the upper Odernheim-Unit.{{Citation |last=Königer |first=S. |title=Environmental and Tectonic Controls on Preservation Potential of Distal Fallout Ashes in Fluvio-Lacustrine Settings: The Carboniferous–Permian Saar–Nahe Basin, South–West Germany |date=2001 |work=Volcaniclastic Sedimentation in Lacustrine Settings |pages=263–284 |url=https://onlinelibrary.wiley.com/doi/abs/10.1002/9781444304251.ch13 |access-date=2024-12-24 |publisher=John Wiley & Sons, Ltd |language=en |doi=10.1002/9781444304251.ch13 |isbn=978-1-4443-0425-1 |last2=Stollhofen |first2=H.}}

This formation is well-known for the rich occurrences of vertebrates with exceptional preservation, in profundal facies of large freshwater lakes.{{Cite journal |last=Poschmann |first=Markus J. |last2=Nel |first2=André |last3=Raisch |first3=Manfred |date=2024-03-01 |title=Diversity and variability of grylloblattidan insects (Grylloblattida) from the early Permian Meisenheim Formation of the Saar-Nahe Basin (SW-Germany) |url=https://link.springer.com/article/10.1007/s12542-023-00672-8 |journal=PalZ |language=en |volume=98 |issue=1 |pages=67–84 |doi=10.1007/s12542-023-00672-8 |issn=1867-6812}} Fossils from the formation provided the first direct evidence of a three-level trophic chain in the fossil record, involving a Triodus with two larval temnospondyls (an Archegosaurus and a Glanochthon) in its gut, one of which itself has a juvenile Acanthodes within its gut.{{Cite journal |last=Kriwet |first=Jürgen |last2=Witzmann |first2=Florian |last3=Klug |first3=Stefanie |last4=Heidtke |first4=Ulrich H.J |date=2007-10-31 |title=First direct evidence of a vertebrate three-level trophic chain in the fossil record |url=https://doi.org/10.1098/rspb.2007.1170 |journal=Proceedings of the Royal Society B: Biological Sciences |volume=275 |issue=1631 |pages=181–186 |doi=10.1098/rspb.2007.1170 |issn=0962-8452}}