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 It was previously dated by pollen analysis, mammal stratigraphy, and an unpublished radiometric K/Ar analysis as late Paleocene (see Kedves & Russell 1982).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
Insecta | |
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"Lestes" zalesskyi n. sp.4
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"Dineutes giganteus n. sp." = Gyretes giganteus
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"Zonabris immaculatus n. sp." = Cainomerga immaculata
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Psiloptera vermiculata n. sp., Buprestites lineatocollis n. sp., "Eurythyrea viridis n. sp." = Buprestis viridis, "Ancylochira octomaculata n. sp." = Buprestis octomaculata, Ancylochira metallica n. sp., Eurythyrea micropunctata n. sp., Anthaxia ventricosa n. sp., "Anthaxia biimpressa n. sp." = Anthaxia eocenica, Stigmodera unicolor n. sp., Iridotaenia hovassei n. sp., "Lampra gautieri" = Lamprodila gautieri, "Psiloptera (Lampetis) aurostriata" = Lamprodila gautieri, Polybothris primordialis n. sp., Ancylochira striatopunctata n. sp., Ancylochira violaceocyanescens n. sp., Ancylochira pinguis n. sp., Chrysochroa punctata n. sp.
"Ancylochira octomaculata n. sp." = Buprestis octomaculata Piton 1940 jewel beetle Coll. Piton 85, 86
"Psiloptera (Lampetis) aurostriata" = Lamprodila gautieri Bruyant 1902 jewel beetle Coll. Piton 400, 401
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Semiotus menatensis n. sp., "Adelocera jungi n. sp." = Lacon jungi
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Chlorida magnifica n. sp., Monohammus orientalis n. sp., Prolamioides brunneus n. sp., "Palaeoncoderes piacentinii n. sp." = Palaeoncoderes piacentini, Palaeoncoderes eocenicus, Prionus sinuatus n. sp.
"Palaeoncoderes piacentinii n. sp." = Palaeoncoderes piacentini Piton 1940 longhorned beetle Coll. Piton 525
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"Haltica dryophyllorum n. sp." = Altica dryophyllorum, Cryptocephalus minusculus n. sp., "Clythrina eocenica n. gen. n. sp." = Clytrina eocenica
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Phytonomus punctatus n. sp.
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Rhysosternum punctatolineatum n. sp., "Balaninus elegans n. sp." = Menatorhis elegans, Centrinus longipes n. sp., Lixus ligniticus n. sp., Hipporhinus ventricosus 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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Prodontocerum ligniticum n. gen. n. sp.
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Phryganea nigripennis 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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Myzine madeleinae n. sp.
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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, Odynerus manevali n. sp., Ancistrocerus eocenicus n. sp., Ancistrocerus berlandi n. sp., Eumenes projaponica n. sp.
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Myrmosa brunnea n. sp.
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Manevalia pachyliformis n. gen. n. sp.
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Tenthredo primordialis n. sp.
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Prohepialus incertus n. gen. n. sp.
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Hammapteryx eocenicus n. sp.
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Lithopsis lineatus n. sp.
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Pycanum griseum n. sp., Pycanum vanvollenhoveni n. sp.
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Teleocydnus auriculatus n. sp.
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Coptosoma eocenica n. sp.
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Lithopsis punctinervis n. sp.
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Tettigonella chazei n. sp., Bythoscopus pulcher n. sp.
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"Aphrophora maculata n. sp." = Aphrophora pitoni5
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Meuniera haupti n. sp.5
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"Rihana beauchampi n. sp." = Chremistica beauchampi
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Menatacridium eocenicum n. sp., Orthacanthacris incertus 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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Eremobiites sp., Ochrilidia lineata n. sp.
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"Archaeophlebia enigmatica n. gen. n. sp." = Louispitonia enigmatica, Arvernineura insignis n. gen. n. sp.
"Archaeophlebia enigmatica n. gen. n. sp." = Louispitonia enigmatica Piton 1940 mantis Coll. Piton 640, 641
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Neotermes grassei n. sp.
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Prochaeradodis enigmaticus n. gen. n. sp.
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Gyna obesa n. sp.
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Prostylopyga gigantea n. gen. n. sp., Periplaneta houlberti n. sp., Zeunera madeleinae n. sp., Zeunera superba n. sp., Eoplaneta desforesti, Protectobia primordialis n. gen. n. sp.
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Dictyophara scudderi n. sp.
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"Limnobia theobaldi n. sp." = Limonia theobaldi
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Bibio sp. Geoffroy 1762 march fly | |
Chrysops seguyi n. sp.
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Aves | |
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Reptilia | |
Menatalligator bergouniouxi n. gen. n. sp.6
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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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