Ronzon (Oligocene of France)

Also known as Quercy Phosphorite, Phospherites du Quercy

Where: Auvergne Region, France (45.0° N, 3.9° E: paleocoordinates 44.3° N, 0.5° E)

• coordinate based on political unit

• local area-level geographic resolution

When: Ronzon reference level zone, Early/Lower Oligocene (33.9 - 28.4 Ma)

• Stratified locality

Environment/lithology: terrestrial; lime mudstone

Size class: macrofossils

Reposited in the MNHN

Collection methods: quarrying,

• 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).

Primary reference: J. 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 31767: authorized by Emmanuel Fara, entered by Emmanuel Fara on 25.05.2003, edited by Robin Whatley, Frédéric Lacombat, Jered Karr, Mark Uhen, Matthew Clapham and Bethany Allen

Creative Commons license: CC BY (attribution)

Taxonomic list

• Additions to the collection record made by JA but based on information provided by Frédéric Lacombat.
unclassified
  -
Insecta
 Coleoptera - Dytiscidae
Necticus palustris n. sp.1 Aymard 1856 predaceous diving beetle
nymphs/larvae; orig. Pichot-Dumazel coll, Musee Crozatier, Le Puy
 Coleoptera -
Akulosamphus montanus n. gen. n. sp.1, Necticus minutus n. sp.1
Akulosamphus montanus n. gen. n. sp.1 Aymard 1856 weevil
specimen(s) lost; orig. Pichot-Dumazel coll, Musee Crozatier, Le Puy
Necticus minutus n. sp.1 Aymard 1856 beetle
specimen(s) lost; orig. Pichot-Dumazel coll, Musee Crozatier, Le Puy
 Odonata - Sieblosiidae
"Megasemum ronzonense n. gen. n. sp." = Stenolestes ronzonense1
"Megasemum ronzonense n. gen. n. sp." = Stenolestes ronzonense1 Maneval 1936 damselfly
MNHN-LP-B.21292 (5 fragments orig. Pichot-Dumazel coll, Musee Crozatier, Le Puy)
 Diptera -
Aemodipsus bornensis n. gen. n. sp.1
Aemodipsus bornensis n. gen. n. sp.1 Aymard 1856 fly
orig. Pichot-Dumazel coll, Musee Crozatier, Le Puy
 Diptera - Bibionidae
"Dichaneurum primaevum n. sp." = Bibio aymardi1, "Dichaneurum infossum n. sp." = Bibio aymardi1, "Plecia splendida" = Plecia foersteri7
"Dichaneurum primaevum n. sp." = Bibio aymardi1 Maneval 1936 march fly
orig. Pichot-Dumazel coll, Musee Crozatier, Le Puy
"Dichaneurum infossum n. sp." = Bibio aymardi1 Maneval 1936 march fly
3 specimens of Bibio aymardi; orig. Pichot-Dumazel coll, Musee Crozatier, Le Puy
"Plecia splendida" = Plecia foersteri7 Theobald 1937 love bug
Mammalia
 Rodentia - Theridomyidae
Pseudoltinomys gaillardi2 Lavocat 1951 rodent
 Rodentia - Eomyidae
Eomys antiquus n. sp.2 Aymard 1853 rodent
MNHN specimen - type
 Rodentia - Cricetidae
"? Eucricetodon atavus" = Atavocricetodon atavus2
"? Eucricetodon atavus" = Atavocricetodon atavus2 Misonne 1957 mouse
 Theriamorpha - Erinaceidae
"Tetracus nanus" = Tetracus nanus4, "Tetracus bouti" = Tetracus nanus2
"Tetracus nanus" = Tetracus nanus4 Aymard 1846 hedgehog
"Tetracus bouti" = Tetracus nanus2 Aymard 1846 hedgehog
 Perissodactyla - Rhinocerotidae
Ronzotherium velaunum2 Aymard 1853 rhinoceros
 Perissodactyla - Palaeotheriidae
Plagiolophus minor2 Cuvier 1804 odd-toed ungulate
 Artiodactyla - Entelodontidae
Entelodon magnum even-toed ungulate
 Artiodactyla - Anthracotheriidae
Bothriodon velaunum anthracothere
 Artiodactyla - Cainotheriidae
? Paroxacron sp. Hürzeler 1936 even-toed ungulate
 Artiodactyla - Amphimerycidae
Amphimeryx riparius Aymard 1855 even-toed ungulate
 Artiodactyla - Gelocidae
Gelocus communis n. sp. Aymard 1846 ruminant
 Creodonta - Hyaenodontidae
Hyaenodon leptorhynchus2 Laizer and Parieu 1838 creodont
Hyaenodon dubius2 Filhol 1873 creodont
 Carnivora - Ursidae
"Cynodon palustris" = Amphicynodon palustris3, Amphicynodon velaunus n. sp.2, Proplesictis aymardi n. sp.3
"Cynodon palustris" = Amphicynodon palustris3 Aymard 1850 bear
Amphicynodon velaunus n. sp.2 Aymard 1846 bear
see also Cirot and de Bonis 1992
Proplesictis aymardi n. sp.3 Filhol 1881 bear
 Theriamorpha - Herpetotheriidae
Aves
  -
Dolichopterus viator6 Milne-Edwards 1867 bird
Teracus littoralis6 Milne-Edwards 1871 bird
 Suliformes - Sulidae
"Mergus ronzoni" = Prophalacrocorax ronzoni5
"Mergus ronzoni" = Prophalacrocorax ronzoni5 Gervais 1849 booby
 Phoenicopteriformes - Phoenicopteridae
Elornis grandis6 Milne-Edwards 1870 flamingo
Elornis littoralis6 Milne-Edwards 1868 flamingo