Ronzon: Early/Lower Oligocene, France

List of taxa
Where & when
Taphonomy & methods
Metadata & references
Taxonomic list
Pseudopaleotherium longistratum
Brunet 1979
Insecta - Coleoptera
Akulosamphus montanus n. gen., n. sp. Aymard 1856
Aymard 1856
nomen nudum belonging to Curculionoidea
specimen(s) lost; orig. Pichot-Dumazel coll, Musee Crozatier, Le Puy
Insecta - Coleoptera - Dytiscidae
Necticus palustris n. sp. Aymard 1856
Aymard 1856
nomen nudum belonging to Dytiscidae
nymphs/larvae; orig. Pichot-Dumazel coll, Musee Crozatier, Le Puy
Insecta - Coleoptera
Necticus minutus n. sp. Aymard 1856
Aymard 1856
nomen nudum belonging to Coleoptera
specimen(s) lost; orig. Pichot-Dumazel coll, Musee Crozatier, Le Puy
Insecta - Diptera - Bibionidae
Plecia splendida Theobald 1937
Theobald 1937 1 specimen
synonym of Plecia foersteri
Dichaneurum primaevum n. sp. Aymard 1856
Aymard 1856 1 specimen
replaced by Bibio aymardi
orig. Pichot-Dumazel coll, Musee Crozatier, Le Puy
Dichaneurum infossum n. sp. Aymard 1856
Aymard 1856 2 specimens
replaced by Bibio aymardi
3 specimens of Bibio aymardi; orig. Pichot-Dumazel coll, Musee Crozatier, Le Puy
Insecta - Diptera
Aemodipsus bornensis n. gen., n. sp. Aymard 1856
Aymard 1856 1 specimen
nomen nudum belonging to Diptera
orig. Pichot-Dumazel coll, Musee Crozatier, Le Puy
Insecta - Odonata - Sieblosiidae
Megasemum ronzonense n. gen., n. sp. Aymard 1856
Aymard 1856 5 specimens
replaced by Stenolestes ronzonense
MNHN-LP-B.21292 (5 fragments orig. Pichot-Dumazel coll, Musee Crozatier, Le Puy) (1 measurement)
Reptilia - Avetheropoda - Phoenicopteridae
Elornis littoralis Milne-Edwards 1868
Olson 1978
Elornis grandis Milne-Edwards 1870
Olson 1978
Reptilia - Avetheropoda - Sulidae
Mergus ronzoni Gervais 1849
Gohlich 2003
recombined as Prophalacrocorax ronzoni
Reptilia - Avetheropoda
Dolichopterus viator Milne-Edwards 1867
Olson 1978
Teracus littoralis Milne-Edwards 1871
Olson 1978
Mammalia - Rodentia - Theridomyidae
Theridomys aquatilis
Brunet 1979
Pseudoltinomys gaillardi Lavocat 1951
Brunet 1979
Mammalia - Rodentia - Cricetidae
? Eucricetodon atavus (Misonne 1957)
Brunet 1979
recombined as Atavocricetodon atavus
Mammalia - Rodentia - Eomyidae
Eomys antiquus n. sp. Aymard 1853
Brunet 1979 1 specimen
MNHN specimen - type
Mammalia - Lipotyphla - Erinaceidae
Tetracus nanus (Aymard 1846)
Crochet 1974
Tetracus bouti Lavocat 1951
Brunet 1979
synonym of Tetracus nanus
Mammalia - Perissodactyla - Rhinocerotidae
Ronzotherium velaunum Aymard 1853
Brunet 1979
Mammalia - Perissodactyla - Pachynolophidae
Plagiolophus minor Cuvier 1804
Brunet 1979
Mammalia - Carnivora - Ursidae
Amphicynodon velaunus
Brunet 1979
see also Cirot and de Bonis 1992
Mammalia - Ungulata - Entelodontidae
Entelodon magnum
Mammalia - Ungulata - Amphimerycidae
Amphimeryx riparius Aymard 1855
Mammalia - Ungulata - Anthracotheriidae
Bothriodon velaunum
Mammalia - Ungulata - Cainotheriidae
? Paroxacron sp. Hürzeler 1936
Mammalia - Ungulata - Gelocidae
Gelocus communis n. sp. Aymard 1846
Mammalia - Hyaenodonta - Hyaenodontidae
Hyaenodon dubius Filhol 1873
Brunet 1979
Hyaenodon leptorhynchus Laizer and Parieu 1838
Brunet 1979
Peratherium laillardi
Brunet 1979
Peratherium frequens
Brunet 1979
see common names

Country:France State/province:Auvergne Region County:Haute-Loire Departement
Coordinates: 45.0° North, 3.9° East (view map)
Paleocoordinates:44.3° North, 0.5° East
Basis of coordinate:based on political unit
Altitude:750 meters
Geographic resolution:local area
Period:Paleogene Epoch:Oligocene
Stage:Rupelian 10 m.y. bin:Cenozoic 4
*Period:Early/Lower Tertiary - Early/Lower Tertiary *Epoch:Early/Lower Oligocene - Early/Lower Oligocene
*International age/stage:Stampian - Stampian *Local age/stage:Early/Lower Sannoisien - Early/Lower Sannoisien
Key time interval:Early/Lower Oligocene Zone: Ronzon reference level
Age range of interval:33.90000 - 28.40000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy comments: Stratified locality
Lithology and environment
Primary lithology: lime mudstone
Includes fossils?Y
Environment:terrestrial indet. Tectonic setting:foreland basin
Modes of preservation:body
Size of fossils:macrofossils
Preservation of anatomical detail:excellent
Abundance in sediment:common
Articulated whole bodies:some
Associated major elements:some
Disassociated major elements:some
Disassociated minor elements:some
Collection methods and comments
Collection methods:selective quarrying,field collection
Collection size:2000 specimens
Reason for describing collection:taxonomic analysis
Museum repositories:MNHN
Collection method comments: Ronzon is in fact a group of quarries located South from Le Puy, Auvergne.
Tetracus nanus and Amphicynodon velaunus type specimens are in the MNHN. Ronzon is the type locality for Eomys antiquus, Entelodon magnus (lectotype MNHN), Ronzotherium velanum (Lectotype Crozatier Museum, Le Puy-en-Velay).
Original collection from Aymard is stored in the Crozatier Museum (Le Puy-en-Velay).
Taxonomic list comments:Additions to the collection record made by JA but based on information provided by Frédéric Lacombat.
Also known as:Quercy Phosphorite, Phospherites du Quercy
Database number:31767
Authorizer:E. Fara, J. Alroy, F. Lacombat, M. Uhen, M. Clapham Enterer:E. Fara, F. Lacombat, M. Clapham, M. Uhen, J. Karr, R. Whatley
Modifier:M. Clapham Research group:paleoentomology,vertebrate
Collections that are a subset of this one:32084
Created:2003-05-25 03:57:39 Last modified:2016-12-26 17:14:56
Access level:the public Released:2003-05-25 03:57:39
Creative Commons license:CC BY
Reference information

Primary reference:

8517.5% 7400J. Sudre. 1978. Les artiodactyles de l'Eocene moyen et superieur d'Europe occidentale; systematique et evolution. Memoires et Travaux de l'Institut de Montpellier de l'Ecole Pratique des Hautes Etudes 7:1-229 [E. Fara/E. Fara/M. Uhen]

Secondary references:

48313 A. Aymard. 1856. Rapport sur les collections de M. Picot-Dumazel. Congrès Scientifique de France, Vingt-Deuxième Session 1:227-252 [M. Clapham/M. Clapham]
19145 M. Brunet. 1979. Les grands mammifères chefs de file de l'immigration oligocène et le problème de la limite Eocene-Oligocene en Europe. Editions de la Fondation Singer-Polignac 1-281 [F. Lacombat/F. Lacombat]
98325% 16920E. Cirot and L. de Bonis. 1992. Revision du genre Amphicynodon, carnivore de l'Oligocene. [Revision of the genus Amphicynodon, Oligocene carnivores.]. Palaeontographica Abteilung A 220(4-6):103-130 [J. Alroy/R. Whatley/J. Alroy]
98305% 17580B. Comte and M. Vianey-Liaud. 1989. Eomyidae (Rodentia) de l'Oligocene d'Europe Occidentale. [Eomyidae (Rodentia) from the Oligocene of Western Europe.]. Palaeontographica Abteilung A 209(1-4):33-91 [J. Alroy/R. Whatley/J. Alroy]
98315% 36280J.-Y. Crochet. 1974. Les Insectivores des Phosphorites du Quercy. [Insectivores of the Quercy Phosphorites]. Palaeovertebrata, Montpellier 6(1-2):109-159 [J. Alroy/R. Whatley/L. van den Hoek Ostende]
40668 U. B. Gohlich. 2003. The avifauna of the Grund Beds (Middle Miocene, Early Badenian, northern Austria). Annalen des Naturhistorischen Museums in Wien, Serie A 104:237-249 [M. Uhen/M. Uhen/T. Liebrecht]
48314 H. Maneval. 1936. Insectes fossiles des calcaires Oligocènes de Ronzon (Le Puy). Annales de la Société Linnéenne de Lyon 79:24-37 [M. Clapham/M. Clapham]
36994 A. Nel and J. C. Paicheler. 1994. Les Lestoidea (Odonata, Zygoptera) fossiles: Un inventaire critique. Annales de Paléontologie 80(1):1-59 [M. Clapham/J. Karr/J. Karr]
40623 S. Olson. 1978. The nomenclatural status of the taxa of fossil birds attributed to Auguste Aymard. Proceedings of the Biological Society of Washington 91(2):444-449 [M. Uhen/M. Shalap/M. Uhen]
38999 N. Theobald. 1937. Les insectes fossiles des terrains oligocènes de France. Bulletin Mensuel (Mémoires) de la Société des Sciences de Nancy 1:1-473 [M. Clapham/J. Karr]