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Regnana Formation

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Regnana Formation
Stratigraphic range: Early Permian, Kungurian
TypeGeological formation
Unit ofAthesian Volcanic Complex
Sub-units
  • San Pellegrino Member
  • Stramaiolo’ (Redebus) locality
UnderliesOra Formation
Lithology
PrimaryAndesite
OtherPyroclastic rock
Location
RegionPinè Valley, Italian Alps
Country Italy

The Regnana Formation is an Early Permian (Kungurian) geologic formation located in the Italian Alps that is part of the Athesian Volcanic Complex.[1] Reptile and plant remains are among the fossils that have been recovered from the formation.[2][3] The formation is mainly made up of andesite and pyroclastic rock.[4]

Paleobiota

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Fossils reported from the Regnana Formation
Genus Species Location Stratigraphic position Material Notes Images
Plantae[3] Indeterminate[3] Stramaiolo' (Redebus)[3] Large, possibly coalified, shoot and leaf fragments[2] Discovered in the same fossil layer as the holotype of Tridentinosaurus[3]
Tridentinosaurus[2] T. antiquus[2] Stramaiolo' (Redebus)[2][3] Poorly preserved femora, tibiae, and fibulae, possible osteoderm skin impressions near the shoulder and pelvis[3] The body outline of the specimen is a forgery and only the scales and hindlimbs are real[3]

See also

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References

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  1. ^ Morelli, C., Marocchi, M., Moretti, A., Bargossi, G. M., Gasparotto, G., Waele, B., Klötzli, U. and Mair, V. (2012). Volcanic stratigraphy and radiometric age constraints at the northern margin of a mega-caldera system: Athesian Volcanic Group (Southern Alps, Italy). GeoActa, 11, 51–67.
  2. ^ a b c d e Leonardi, Piero (1959). "Tridentinosaurus antiquus Gb. Dal Piaz rettile protorosauro permiano del trentino orientale". Memorie degli Istituti di Geologia e Mineralogia degll'Università di Padova (in Italian). 21: 1–17.
  3. ^ a b c d e f g h Rossi, Valentina; Bernardi, Massimo; Fornasiero, Mariagabriella; Nestola, Fabrizio; Unitt, Richard; Castelli, Stefano; Kustatscher, Evelyn (2024-02-15). "Forged soft tissues revealed in the oldest fossil reptile from the early Permian of the Alps". Palaeontology. 67 (1). e12690. doi:10.1111/pala.12690. hdl:11577/3513043. ISSN 0031-0239.
  4. ^ Abbà, Tiziano; Breda, Anna; Massironi, Matteo; Preto, Nereo; Piccin, Gianluca; Trentini, Tommaso; Bondesan, Aldino; Carton, Alberto; Fontana, Alessandro; Mozzi, Paolo; Surian, Nicola; Zanoner, Thomas; Zampieri, Dario (2018-11-13). "Pre-Alpine and Alpine deformation at San Pellegrino pass (Dolomites, Italy)". Journal of Maps. 14 (2): 671–679. doi:10.1080/17445647.2018.1536001. hdl:11577/3284080. ISSN 1744-5647.