Where: Auvergne, France (46.1° N, 2.9° E: paleocoordinates 40.3° N, 0.7° E)
• coordinate stated in text
• outcrop-level geographic resolution
When: Menat Formation, Selandian (61.6 - 59.2 Ma)
• The estimated age of the Menat site varies. It was previously dated by pollen analysis, mammal stratigraphy, and an unpublished radiometric K/Ar analysis as late Paleocene (see Kedves & Russell 1982). However, several lines of more recent evidence indicate an older, middle Paleocene (Selandian) age, of about 60-61 Ma. Paleomagnetic studies reveal that the eruption took place during a reversed interval (Kedves & Russell 1982). Fossils of the mammal Plesiadapis from Menat enable the locality to be connected to the biostratigraphic framework established in the Western Interior USA that relies extensively on this genus (Gingerich 1976; Secord et al. 2006). The abundance of the genus, its rapid evolution, and its Holarctic dispersal history allow species of Plesiadapis to play an important role in the zonation of Paleocene continental sediments and in correlation of faunas on both sides of the North Atlantic (e.g., Gingerich 1976). Two remarkable skeletons of P. insignis, one of them nearly complete, have been found in lake deposits at Menat, and this species closely compares to P. praecursor / P. anceps in North America (pers. comm. P. Gingerich August 2008). This suggests an early Selandian age, equivalent to the early Tiffanian Ti-1/Ti-2 land mammal biozonation sensu Secord et al. (2006) (see also Gingerich 1976; Russell 1967, 1975). In North America, the Ti1 and Ti2 biozones occur within magnetic polarity Chron 26r (Secord et al. 2006), consistent with the reversed polarity of the Menat sediments.
Environment/lithology: crater lake; diatomite
Size classes: macrofossils, mesofossils
Preservation: mold/impression
Collected by Piton; reposited in the MNHN
Primary reference: L. Piton. 1940. Paléontologie du Gisement Éocéne de Menat (Puy-de-Dôme) (Flore et Faune) 1-303 [M. Clapham/J. Karr/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 113685: authorized by Matthew Clapham, entered by Jered Karr on 04.08.2011, edited by Philip Mannion
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
Lazarussuchus sp.1 Hecht 1992 choristodere BDL 1819 - comprises a skull and postcranial skeleton in articulation, preserved as part and counterpart
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Aves | |
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Reptilia | |
Menatalligator bergouniouxi n. gen. n. sp.6
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Insecta | |
"Limnobia theobaldi n. sp." = Limonia theobaldi
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Bibio sp. Geoffroy 1762 march fly | |
Chrysops seguyi n. sp.
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Menatacridium eocenicum n. sp.
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Neotermes grassei n. sp.
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Protectobia primordialis n. gen. n. sp., Prostylopyga gigantea n. gen. n. sp., Eoplaneta desforesti, Periplaneta houlberti n. sp., Zeunera madeleinae n. sp., Zeunera superba n. sp.
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Gyna obesa n. sp.
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Prochaeradodis enigmaticus n. gen. n. sp.
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Arvernineura insignis n. gen. n. sp., "Archaeophlebia enigmatica n. gen. n. sp." = Louispitonia enigmatica
"Archaeophlebia enigmatica n. gen. n. sp." = Louispitonia enigmatica Piton 1940 mantis Coll. Piton 640, 641
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Orthacanthacris incertus n. sp.
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Ochrilidia lineata n. sp.
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Protempusa incerta n. gen. n. sp., Conocephalus martyi n. sp., Prophasgonura lineatocollis n. gen. n. sp.
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Dictyophara scudderi n. sp.
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Megopis lineolatus n. sp., Euchroma arvernica n. sp.
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"Zonabris immaculatus n. sp." = Cainomerga immaculata
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"Dineutes giganteus n. sp." = Gyretes giganteus
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Semiotus menatensis n. sp., "Adelocera jungi n. sp." = Lacon jungi
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Ancylochira violaceocyanescens n. sp., "Lampra gautieri" = Lamprodila gautieri, "Psiloptera (Lampetis) aurostriata" = Lamprodila gautieri, Polybothris primordialis n. sp., "Anthaxia biimpressa n. sp." = Anthaxia eocenica, Anthaxia ventricosa n. sp., Psiloptera vermiculata n. sp., Buprestites lineatocollis n. sp., Eurythyrea micropunctata n. sp., Ancylochira metallica n. sp., "Ancylochira octomaculata n. sp." = Buprestis octomaculata, "Eurythyrea viridis n. sp." = Buprestis viridis, Ancylochira pinguis n. sp., Stigmodera unicolor n. sp., Ancylochira striatopunctata n. sp., Iridotaenia hovassei n. sp., Chrysochroa punctata n. sp.
"Psiloptera (Lampetis) aurostriata" = Lamprodila gautieri Bruyant 1902 jewel beetle Coll. Piton 400, 401
"Ancylochira octomaculata n. sp." = Buprestis octomaculata Piton 1940 jewel beetle Coll. Piton 85, 86
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Chlorida magnifica n. sp., Palaeoncoderes eocenicus, "Palaeoncoderes piacentinii n. sp." = Palaeoncoderes piacentini, Monohammus orientalis n. sp., Prolamioides brunneus n. sp., Prionus sinuatus n. sp.
"Palaeoncoderes piacentinii n. sp." = Palaeoncoderes piacentini Piton 1940 longhorned beetle Coll. Piton 525
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"Clythrina eocenica n. gen. n. sp." = Clytrina eocenica, Cryptocephalus minusculus n. sp., "Haltica dryophyllorum n. sp." = Altica dryophyllorum
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Centrinus longipes n. sp., "Balaninus elegans n. sp." = Menatorhis elegans, Lixus ligniticus n. sp., Hipporhinus ventricosus n. sp., Rhysosternum punctatolineatum n. sp.
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Phytonomus punctatus n. sp.
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Bolboceras inermis n. sp.
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Aphodius charauxi n. sp.
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Oxyporus impressus n. sp.
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Acmaeodera perreaui n. sp.
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Phryganea nigripennis n. sp.
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Prodontocerum ligniticum n. gen. n. sp.
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Prohepialus incertus n. gen. n. sp.
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Tenthredo primordialis n. sp.
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Manevalia pachyliformis n. gen. n. sp.
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"Eosirex ligniticus n. gen. n. sp." = Urocerus ligniticus
"Eosirex ligniticus n. gen. n. sp." = Urocerus ligniticus Piton 1940 horntail Coll. Piton 743( MNHN IPM-R07004, IPM-B47308)
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"? Phaenolobus arvernus n. sp." = Hallocinetus arvernus
"? Phaenolobus arvernus n. sp." = Hallocinetus arvernus Piton 1940 ichneumon wasp Coll. Piton 663 (MNHN.F.A57301)
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Probombus hirsutus n. gen. n. sp.
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Gorytes statzi n. sp.
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Polistes vergnei n. sp., "Rygchium andrei n. sp." = Rhynchium andrei, Ancistrocerus berlandi n. sp., Ancistrocerus eocenicus n. sp., Eumenes projaponica n. sp., Odynerus manevali n. sp.
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Myrmosa brunnea n. sp.
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Myzine madeleinae n. sp.
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Lithopsis lineatus n. sp.
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Coptosoma eocenica n. sp.
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Teleocydnus auriculatus n. sp.
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Pycanum griseum n. sp., Pycanum vanvollenhoveni n. sp.
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"Rihana beauchampi n. sp." = Chremistica beauchampi
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Meuniera haupti n. sp.5
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Bythoscopus pulcher n. sp., Tettigonella chazei n. sp.
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"Aphrophora maculata n. sp." = Aphrophora pitoni5
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Lithopsis punctinervis n. sp.
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Hammapteryx eocenicus n. sp.
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"Lestes" zalesskyi n. sp.4
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