New Flat-Backed Archipolypodan Millipedes From the Upper Devonian of North America

Wilson, Heather M.; Daeschler, Edward B.; Desbiens, Sylvain

doi:10.1666/0022-3360(2005)079[0738:nfamft]2.0.co;2

Cited by 20 publications

(20 citation statements)

References 15 publications

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“…The aquatic component of the invertebrate fauna includes the conchostracan Asmusia membranacea (Martens 1996), a parastylonurid, an eurypterid (Jeram 1996) and a scolecodont , whereas the continental component includes the millipede Zanclodesmus willetti (Wilson et al 2005), the scorpion Petaloscorpio bureaui and a gigantoscorpionid (Jeram 1996). Fragments of arthropod cuticles have been found in palynological preparations , and some of these are likely referable to arachnids or trigonotarbids.…”

Section: Taxonomic and Palaeoecological Diversity (Invertebrates And mentioning

confidence: 99%

The Miguasha Fossil-Fish-Lagerstätte: a consequence of the Devonian land–sea interactions

Cloutier

Proust

Tessier

2011

Palaeobio Palaeoenv

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The evolution of vertebrate assemblages in terms of fluctuating environments has rarely been investigated for the Devonian period. Variation of biodiversity (richness, abundance and species composition) in the diverse Devonian fish assemblage of the Escuminac Formation (Quebec, Canada) is analysed in response to changes in lithofacies, depositional environment and taphonomy through time. Five sequences within an inner wave-dominated estuary show shifts in continentalisation. Although a ubiquitous fish assemblage is identified throughout the formation, species are more diversified and species composition is better structured during relative sea-level rise than during still-stand and relative sea-level fall. Konservat and Konzentrat FossilLagerstätte horizons occur in the transgressive phase of the sequences.

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Section: Taxonomic and Palaeoecological Diversity (Invertebrates And mentioning

confidence: 99%

The Miguasha Fossil-Fish-Lagerstätte: a consequence of the Devonian land–sea interactions

Cloutier

Proust

Tessier

2011

Palaeobio Palaeoenv

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“…The aquatic component of the invertebrate fauna includes the spinicaudatan (or conchostracan) Asmusia membranacea (Martens 1996;Fig. 4h), a parastylonurid eurypterid (Jeram 1996), and a scolecodont ; the continental component includes the millipede Zanclodesmus wil- letti (Wilson et al 2005; Fig. 4b), the scorpion Petaloscorpio bureaui (Fig.…”

Section: Paleobiology Diversity Of the Miguasha Biotamentioning

confidence: 99%

“…4c) and the millipede Zanclodesmus (Fig. 4b) are considered to be some of the earliest continental arthropods (Jeram 1996;Wilson et al 2005).…”

Section: Evolutionary Significance Of the Miguasha Biotamentioning

confidence: 99%

Great Canadian Lagerstätten 4. The Devonian Miguasha Biota (Québec): UNESCO World Heritage Site and a Time Capsule in the Early History of Vertebrates

Cloutier¹

2013

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Over the past 170 years, the Late Devonian Miguasha biota from eastern Canada has yielded a diverse aquatic assemblage including 20 species of lower vertebrates (anaspids, osteostracans, placoderms, acanthodians, actinopterygians and sarcopterygians), a more limited invertebrate assemblage, and a continental component including plants, scorpions and millipedes. Originally interpreted as a freshwater lacustrine environment, recent paleontological, taphonomic, sedimentological and geochemical evidence corroborates a brackish estuarine setting. Over 18,000 fish specimens have been recovered showing various modes of fossilization, including uncompressed material and soft-tissue preservation. Most vertebrates are known from numerous, complete, articulated specimens. Exceptionally well-preserved larval and juvenile specimens have been identified for 14 out of the 20 species of fishes, allowing growth studies. Numerous horizons within the Escuminac Formation are now interpreted as either Konservat– or Konzentrat–Lagerstätten.SOMMAIREAu cours des 170 dernières années, le biote du Dévonien supérieur de Miguasha de l’Est du Canada a fourni un assemblage aquatique diversifié, comprenant 20 espèces de vertébrés inférieurs (anaspides, ostéostracés, placodermes, acanthodiens, actinoptérygiens et sarcoptérygiens) et un assemblage peu diversifié d’invertébrés ainsi qu’une composante continentale, représentée par des plantes, des scorpions et des mille-pattes. À l’origine interprété comme un milieu lacustre d’eau douce, les dernières preuves paléontologiques, taphonomiques, sédimentologiques et géochimiques confirment un environnement saumâtre rappelant celui d’un estuaire. Plus de 18,000 fossiles de poissons ont été découverts montrant différents états de conservation, notamment en trois dimensions et la préservation de tissus mous. La plupart des vertébrés sont connus par de nombreux spécimens complets et articulés. Des spécimens de larves et de juvéniles, exceptionnellement bien conservés, ont été identifiées pour 14 des 20 espèces de poissons permettant des études détaillées de leur croissance. De nombreux horizons au sein de la Formation d’Escuminac sont interprétés soit comme des Konservat– ou Konzentrat–Lagerstätten.

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“…Strongly seasonal climate and a steeper redoxocline in waterlogged soils at the greenhouse palaeoclimatic spike of the Annulata event would have promoted preservation of charcoal and other plant debris (Cressler 2001(Cressler , 2006, and articulated arthropods (Shear 2000;Wilson et al 2005) and fish (Daeschler et al 2003;Friedman & Daeschler 2006) in chemically reducing and rapidly deposited increments of sediment.…”

Section: Taphonomymentioning

confidence: 99%

“…Fossil plants (Cressler 2001(Cressler , 2006 and some articulated spiders and millipedes (Shear 2000;Wilson et al 2005) at Hyner are preserved as carbonaceous compressions in and below the Sproul pedotype. These carbonaceous palaeosols have the drab colour and shallow carbonaceous root traces of poorly drained palaeosols (Retallack 2001).…”

Section: Taphonomymentioning

confidence: 99%

Late Devonian tetrapod habitats indicated by palaeosols in Pennsylvania

Retallack

Hunt

White

2009

JGS

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Late Devonian (Famennian) tetrapods from the Duncannon Member of the Catskill Formation, near Hyner (Pennsylvania, USA) have been found within palaeosols that offer a new line of evidence for their ancient environments. Hyner has yielded at least two fossil tetrapod species, Hynerpeton basseti and Densignathus rowei. Subhumid Vertisol palaeosols and semiarid Aridisol palaeosols alternate at Hyner, as in other Catskill Formation sedimentary cycles attributed to Milankovitch-eccentricity periods (100 ka). Tetrapods were found in palaeosols of subhumid, not semiarid, phases of 100 ka palaeoclimate cycles. In addition, palaeosols at Hyner record an unusually warm and wet climatic episode compared with other palaeosols of the Catskill Formation, and correlated with the European Annulata black shale event. Tetrapod bones are cracked and disarticulated in red palaeosols of an oxbow lake margin, as if victims of dry-season death, decay, and subaerial weathering. Vegetation-choked swales and floodplains would have afforded shelter from 3-4 m long predatory fish (Hyneria lindae) of open water, and offered food of large dead fish, small live fish, arachnids, myriapods and scorpions. If these early tetrapods lived on land at all, it was during wet seasons of feeding and breeding, rather than fatally dry seasons.

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New Flat-Backed Archipolypodan Millipedes From the Upper Devonian of North America

Cited by 20 publications

References 15 publications

The Miguasha Fossil-Fish-Lagerstätte: a consequence of the Devonian land–sea interactions

The Miguasha Fossil-Fish-Lagerstätte: a consequence of the Devonian land–sea interactions

Great Canadian Lagerstätten 4. The Devonian Miguasha Biota (Québec): UNESCO World Heritage Site and a Time Capsule in the Early History of Vertebrates

Late Devonian tetrapod habitats indicated by palaeosols in Pennsylvania

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