TheMontceau-les-Mines lagerstätte is a Carboniferouslagerstätte named after and located within the town ofMontceau-les-Mines. It preserves numerous flora and fauna similar to those of theMazon Creek fossil beds in the US, such astemnospondyls,velvet worms,arachnids and more.

Onychophora
Genus	Species	Higher taxon	Notes	Images
Antennipatus	A. montceauensis	IndeterminateOnychophora	Earliest known definite onychophoran known from three specimens. Likely terrestrial.[2]

Arthropoda
Genus	Species	Higher taxon	Notes	Images
Alanops =Liomesaspis birtwelli	A. magnificus	Xiphosura Bellinuridae	Likely capable ofvolvation[3]
Ameticos	A. scolos	Opiliones Dyspnoi	Very similar to modern harvestmen[4]
Macrogyion	M. cronus	Opiliones Eupnoi	Very similar to modern harvestmen[4]
Hastocularis	H. argus	Opiliones Tetrophthalmi	A basal harvestman[5]
Aphantomartus	A. areolatus	Trigonotarbida	[6]
Trigonotarbus	T. sp	Trigonotarbida	[6]
Idmonarachne	I. brasieri	Serikodiastida	Similar to spiders, but lacked spinnerets[7]
Palaeothele	P. montceauensis	Araneae Mesothelae	First mesothele spider known, previously named “Eothele”[8]
Allobuthus	A. pescei[9]	ScorpionesAnthracoscorpionidae	[6]
Coseleyscorpio	C. lanceolatus	Scorpiones	[6]
Schramixerxes	S. gerem	Euthycarcinoidea	Redescribed in 2008[10]
Sottyxerxes	S. multiplex	Euthycarcinoidea	Redescribed in 2008[10]
Amynilyspes	A. fatimae	Oniscomorpha	One of the rarest components of the fauna; only five found in over 20,000 concretions[11][12]
Blanziulus	B. parriati	Xyloiulidae	Likely terrestrial in nature[11]
Arthropleura	A. sp	Arthropleuridea	Specimens from Montceau preserve the first known head anatomy of the genus[13]
Sottyella	S. montceauensis	Phreatoicidea	Found while searching for myriapods[14]
Chabardella	C. spinosa	Gorgonophontidae	Bears spines on its segment margins[14]
Palaeocrangon?	cf.P. sp	Phreatoicidea	Very fragmentary, may not belong to the genus[14]
Palaeocaris	P. secretae P. typusP. retractata	Syncarida	Known from thousands of specimens[14][15]
Montcestheria	M. orri	Spinicaudata	Relatively large spinicaudatan, reached around 2 cm length[16]
Euestheria	E. feysi	Spinicaudata	Much smaller thanMontcestheria[16]
Carbonita	C. ?salteriana	Podocopida	Unclear whether it belongs to the genus[16]
Anebos	A. phrixos	Pterygota	Interpreted as a stem-orthopteran,[17] yet bears similarities to somemegasecopteran larvae?[18]
Phenopterum	P. briggsi	Grylloblattodea	Redescribed alongside a Permian species in the same genus[19]
Montceaupterum	M. baillyi	Grylloblattodea	Oldest member of its family (Euryptilonidae)[20]
Palaeocampa[21]	P. anthrax	Amphinomida	When first described fromMazon Creek, identified as a caterpillar[22]

Vertebrates
Montcellia[23]	M. longidentata	Nectridea Urocordylidae	Formerly classed withinSauropleura[24]
Sauravus	S. costei S. spinosus		[6]
Montceaubatrachus	M. platyrhynchus	Temnospondyli Amphibamiformes	Bears similarities toGerobatrachus[25]
Actinodon	A. sp		[6]
Micromelerpeton	M. boyi	TemnospondyliMicromelerpetidae	[6]
Nyranerpeton	N. montceauense	TemnospondyliMicromelerpetidae	Another species known from theKladno Formation[25]
Indeterminate		Temnospondyli Archegosauridae?	Originally described asActinodon[26]
Branchiosaurus	B. petrolei	Temnospondyli Branchiosauridae	[6]
Bourbonnella	B. sottyi B. fourrieri	Aeduellidae	Likely lived across the tropics during the latest Carboniferous[27]
Platysella	P. descusi	Aeduellidae
Myxineidus	M. gonorum	Cyclostomi	Debated as to whether the genus is a hagfish[28] or lamprey[29]
Expleuracanthus	E. sp.	Xenacanthiformes	A freshwater xenacanth shark, known from dorsal spines from the "Fish Shale Bed"[30]
Sagenodus	S. sp.	Dipnoi	A fragmentary lungfish probably within the genusSagenodus[30]
Acanthodes	A. sp.	Acanthodidae	Fragmentary remains of Acanthodes are known from the "Fish Shale Bed" and some nodules[30]
Phlegethontia	P. sp.	Aistopoda	A snake-like lepospondyl tetrapod[31]

Genus	Species	Higher taxon	Notes	Images
Annularia	A. mucronata A. sphenophylloidesA. spicataA. stellata	Calamitaceae	A form taxon assigned to the leaves of Calamites.[32]
Asterophyllites	A. equisetiformis	Calamitaceae	[32]
Calamites	C. cistii C. cruciatusC. sp.	Calamitaceae	A genus of tree-like horsetail closely related to the modernEquisetum.[32]
Calamostachys	C. tuberculata	Calamitaceae
Sphenophyllostachys	S. sp.	Sphenophyllales	[32]
Sphenophyllum	S. angustifolium S. longifoliumS. oblongifolium	Sphenophyllales	[32]
Pecopteris	P. cyathea P. feminaeformisP. hemitelioidesP. lepidorachisP. miltoniP. platoniiP. polymorphaP. pseudo-oreopteridiaP. unitaP. aff.affinisP. aff.elaverica P. aff.launayiP. sp.	Marattiaceae	A common form of fern leaf[32]

Genus	Species	Higher taxon	Notes	Images
Sphenopteris	S. cristata S. leptophyllaS. aff.picandeti S. sp.	Lyginopteridaceae	[32]
Alethopteris	A. zeilleri A. sp.	Alethopteridaceae	[32]
Callipteridium	C. costei	Cyclopteridaceae	[32]
Dicksonites	D. pluckenetii D. sterzelii	Callistophytales	[32]
Linopterus	L. sp.		[32]
Neuropteris	N. cordata N. planchardiN. sp.	Neurodontopteridaceae	[32]
Odontopteris	O. minor O. reichianaO. subcrenulata	Pteridospermophyta	[32]
Pseudomariopteris	P. sp.	Pteridospermophyta	[32]

Genus	Species	Higher taxon	Notes	Images
Taeniopteris	T. jejunata	Cycadophyta	[32]
Cordaitanthus	C. aff.baccifer C. sp.	Cordaitales	[32]
Cordaites	C. sp.	Cordaitales	[32]

• M. Laurin:Habitat of early stegocephalians (Chordata, Vertebrata, Sarcopterygii): a little saltier than most paleontologists like?. 2023. doi:10.3897/fr.27.123291
• V. Perrier, S. Charbonnier:The Montceau-les-Mines Lagerstätte (Late Carboniferous, France). 2014. doi:10.1016/j.crpv.2014.03.002
• M. Lheritier et al.:Fossils from the Montceau-les-Mines Lagerstätte (305 Ma) shed light on the anatomy, ecology and phylogeny of Carboniferous millipedes. 2023.
• S. Charbonnier, D. Chabard:The nodules from the Late Carboniferous Montceau-les-Mines Lagerstätte, France. In:History of the Collection Sotty 2. In:Annales de Paléontologie. Volume 100, Nr. 2, April–June 2014, S. 99–102. doi:10.1016/j.annpal.2013.08.001
• R. J. Garwood et al.:Carboniferous Onychophora from Montceau-les-Mines, France,and onychophoran terrestrialization. In:Invertebrate Biology. Band 135, Nr. 3, 2016, S. 179–190. doi:10.1111/ivb.12130
• P. R. Racheboeuf, J. Vannier, L. I. Anderson:A New Three-Dimensionally Preserved Xiphosuran Chelicerate from the Montceau-Les-Mines Lagerstätte (Carboniferous, France). In:Palaeontology. Band 45, 2002, S. 125–147. doi:10.1111/1475-4983.00230
• R. J. Garwood et al.:Almost a spider: a 305-million-year-old fossil arachnid and spider origins. 2016. doi:10.1098/rspb.2016.0125
• D. Heyler, C. M. Poplin:The Fossils of Montceau-les-Mines. In:Scientific American. Vol. 259, No. 3, 1988, S. 104–111. JSTOR:24989233
• D. Germain et al.:The presumed hagfish Myxineidus gononorum from the Upper Carboniferous of Montceau-les-Mines (Saône-et-Loire, France). New data obtained by means of Propagation Phase Contrast X-ray Synchrotron Microtomography. In:Annales de Paléontologie. Volume 100, Nr. 2, 2014, S. 131–135. doi:10.1016/j.annpal.2013.12.003

• Carboniferous France
• Lagerstätten
• Paleontology in France
• Carboniferous paleontological sites

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