Quarry between Varenna and Regoledo, Perledo (SMF collection): Longobardian, Italy

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Ionoscopiformes - Subortichthyidae
Allolepidotus bellottii (Rueppell 1857)
Lombardo 2001 4 specimens
SM P1237, P1256, P1244, MB 7597
Allolepidotus nothosomoides n. sp. Deecke 1889
de Alessandri 1910
synonym of Allolepidotus bellottii
Ionoscopiformes - Furidae
Archaeosemionotus connectens n. gen., n. sp. Deecke 1889
de Alessandri 1910 1 specimen
in SMF (fide Alessandri, 1910)
Saurichthyiformes - Saurichthyidae
Belonorhynchus macrocephalus n. sp. Deecke 1889
de Alessandri 1910 6 specimens
recombined as Saurichthys macrocephalus
four specimens and several fragments (perhaps University of Strasbourg)
Actinopteri - Perleidiformes - Perleididae
Semionotus altolepis n. sp. Deecke 1889
de Alessandri 1910 1 specimen
recombined as Perleidus altolepis
in SMF (fide Alessandri, 1910)
Pholidophorus oblongus Bellotti 1857
de Alessandri 1910 1 specimen
replaced by Perleidus altolepis
Counterpart of Stoppani specimen, not Deecke's figured specimen
Heterolepidotus serratus (Bellotti 1857)
de Alessandri 1910
replaced by Perleidus altolepis
Specimen figured by Deecke missing and not H. serratus according to Alessandri
Actinopteri - Perleidiformes - Habroichthyidae
Habroichthys minimus Brough 1939
Actinopteri - Pholidophoriformes - Pholidophoridae
Pholidophorus curionii (Heckel 1849)
de Alessandri 1910 2 specimens
Pholidophorus oblongus in Deecke, 1889 (pl 6, fig 6)
unclassified
Ophiopsis lariensis de Alessandri 1910
de Alessandri 1910 1 specimen
nomen dubium belonging to Actinopterygii
in SMF collected by Rüppel around 1850 (labeled Semionotus balsami)
Heterolepidotus pectoralis (Bellotti 1857)
de Alessandri 1910 4 specimens
nomen dubium belonging to Actinopterygii
Rüppel collection
Ophiopsis lepturus (Bellotti 1857)
de Alessandri 1910 2 specimens
nomen dubium belonging to Actinopterygii
in SMF, collected by Rüppel around 1850 (fide Alessandri, 1910)
Allolepidotus rueppelli n. sp. (Bellotti 1857)
Lombardo 2001 1 specimen
nomen dubium belonging to Actinopterygii
SM P1266
Reptilia - Eosauropterygia - Nothosauridae
Lariosaurus sp. Curioni 1847
Rieppel 1994 1 specimen
Mandible SMF R-13 (Rieppel 1994, fig. 44A)
Lariosaurus balsami n. sp. Curioni 1841
Rieppel 1998
Deirosaurus italicus n. gen., n. sp. Owen 1854
Owen 1854 1 individual
synonym of Lariosaurus balsami
Reptilia - Eosauropterygia - Pachypleurosauridae
Neusticosaurus pusillus (Fraas 1881)
Rieppel 1998
see common names

Geography
Country:Italy State/province:Lecco
Coordinates: 46.0° North, 9.3° East (view map)
Paleocoordinates:8.8° North, 20.4° East
Basis of coordinate:based on nearby landmark
Geographic resolution:local area
Time
Period:Triassic Epoch:Middle Triassic
Stage:Ladinian 10 m.y. bin:Triassic 2
Key time interval:Longobardian
Age range of interval:239.70000 - 237.00000 m.y. ago
Stratigraphy
Formation:Perledo-Varenna Member:Perledo
Stratigraphic resolution:group of beds
Stratigraphy comments: Upper Ladinian (Rieppel 1994)
The precise age of these historical fossil collections from Perledo cannot be determined unequivocally today because precise stratigraphic and locality data are lacking. Tintori et al. (1985) noted that most of the historical fossil material appears to have been collected in the surroundings of the village of Perledo (i.e. in the upper part of the Calcare di Perledo, recognized as the Perledo Member of the Perledo-Varenna Formation, of upper Ladinian age (Gaetani et al. 1992).
Lithology and environment
Primary lithology: lithified "limestone"
Environment:marine indet.
Taphonomy
Modes of preservation:body,adpression
Size of fossils:macrofossils
Collection methods and comments
Collection methods:survey of museum collection
Reason for describing collection:taxonomic analysis
Museum repositories:SMF
Metadata
Database number:120901
Authorizer:M. Clapham, M. Carrano, R. Benson Enterer:M. Clapham, R. Benson, M. Carrano
Modifier:M. Uhen Research group:vertebrate
Created:2011-11-23 12:24:50 Last modified:2024-03-11 15:22:28
Access level:the public Released:2011-11-23 12:24:50
Creative Commons license:CC BY
Reference information

Primary reference:
38610. T. Bürgin. 1990. Der Schuppenpanzer von Habroichthys minimus, einem ungewöhnlichen Strahlenflosser (Actinopterygii; Peltopleuriformes) aus der Mittleren Trias der Südalpen. Neues Jahrbuch für Geologie und Paläontologie, Monatshefte 1990(11):647-658 [M. Clapham/M. Clapham]

Secondary references:

49428 G. de Alessandri. 1910. Studii sui pesci Triasici della Lombardia. Memorie della Societa Italiana di Scienze Naturali e del Museo Civico di Storia Naturale di Milano 7(1):1-145 [M. Clapham/M. Clapham]
39847 C. Lombardo. 2001. Actinopterygians from the Middle Triassic of Northern Italy and Canton Ticino (Switzerland): Anatomical Descriptions and Nomenclatural Problems. Rivista Italiana di Paleontologia e Stratigrafia 107(3):345-369 [M. Clapham/P. Elliott/M. Clapham]
59997 A. López-Arbarello, R. Stockar, and T. Bürgin. 2014. Phylogenetic relationships of the Triassic Archaeosemionotus Deecke (Halecomorphi, Ionoscopiformes) from the Perledo Fauna. PLoS One 9(10):e108665 [M. Clapham/M. Clapham]
9842 R. Owen. 1854. Descriptive catalogue of the Fossil organic remains of Reptilia and Pisces contained in the Museum of the Royal College of Surgeons of England. London 1-184 [M. Carrano/M. Carrano/M. Carrano]
44166 O. Rieppel. 1994. Osteology of Simosaurus gaillardoti and the relationships of stem-group Sauropterygia. Fieldiana: Geology, new series 28:1-85 [R. Benson/R. Benson/R. Benson]
87799 O. Rieppel. 1995. The pachypleurosaur Neusticosaurus (Reptilia, Sauropterygia) from the Middle Triassic of Perledo, Northern Italy. Neus Jahrbuch fur Geologie und Palaontologie - Monatshefte 1995(4):205-216 [M. Uhen/M. Uhen]
44173 O. Rieppel. 1998. The status of the sauropterygian reptile genera Ceresiosaurus, Lariosaurus, and Silvestrosaurus from the Middle Triassic of Europe. Fieldiana: Geology, new series 38:1-46 [R. Benson/R. Benson]