Regnana Formation

Regnana Formation
Stratigraphic range: Early Permian, Kungurian PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Unit of	Athesian Volcanic Complex
Sub-units	San Pellegrino Member Stramaiolo’ (Redebus) locality
Underlies	Ora Formation
Lithology
Primary	Andesite
Other	Pyroclastic rock
Location
Region	Pinè 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

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

• Tridentinosaurus

References

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. 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. 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.