Regnana Formation Explained

Regnana Formation
Type:	Geological formation
Age:	Early Permian,
Period:	Kungurian
Prilithology:	Andesite
Otherlithology:	Pyroclastic rock
Region:	Pinè Valley, Italian Alps
Unitof:	Athesian Volcanic Complex
Subunits:	San Pellegrino Member Stramaiolo’ (Redebus) locality
Underlies:	Ora Formation

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	Indeterminate	Stramaiolo' (Redebus)		Large, possibly coalified, shoot and leaf fragments	Discovered in the same fossil layer as the holotype of Tridentinosaurus
Tridentinosaurus	T. antiquus	Stramaiolo' (Redebus)		Poorly preserved femora, tibiae, and fibulae, possible osteoderm skin impressions near the shoulder and pelvis	The body outline of the specimen is a forgery and only the scales and hindlimbs are real

See also

• Tridentinosaurus

Notes and 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 . it . 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 . . en . 67 . 1 . e12690 . 10.1111/pala.12690 . 0031-0239. free . 11577/3513043 . free .
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 . 10.1080/17445647.2018.1536001 . 1744-5647. 11577/3284080 . free .