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S. Conway Morris - One of the best experts on this subject based on the ideXlab platform.
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The cuticular structure of the 495-Myr-old type species of the Fossil worm Palaeoscolex, P. piscatorum (?Priapulida)
Zoological Journal of the Linnean Society, 1997Co-Authors: S. Conway MorrisAbstract:Abstract Latex impressions of the cuticle of a Compression Fossil of the ?priapulidPalaeoscolex piscatorum, from the Lower Ordovician of Shropshire, demonstrate a complex ornamentation of sclerites similar to isolated material, e.g.Hadimopanellaand phosphatized arrays. Each ‘segment’ is defined by an intercalary zone and bears two rows of sub-circular plates with prominent nodes on the upper surface. The intercalary zone bears two narrow grooves and a series of platelets, similar to but smaller than the plates. The remainder of each segment is occupied by microplates.Palaeoscolex piscatorumis fairly similar to a number of other species, includingGamoscolex herodesandMilaculum elongatum. Present evidence suggests the palaeoscolecidans are priapulid worms (or near relatives). Their abundance, combined with records from Burgess Shale-like occurrences, suggest priapulids were a major component of many Lower Palaeozoic benthic communities.
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Regular ArticleThe cuticular structure of the 495-Myr-old type species of the Fossil wormPalaeoscolex, P. piscatorum(?Priapulida)
Zoological Journal of the Linnean Society, 1997Co-Authors: S. Conway MorrisAbstract:Latex impressions of the cuticle of a Compression Fossil of the ?priapulidPalaeoscolex piscatorum, from the Lower Ordovician of Shropshire, demonstrate a complex ornamentation of sclerites similar to isolated material, e.g.Hadimopanellaand phosphatized arrays. Each ‘segment’ is defined by an intercalary zone and bears two rows of sub-circular plates with prominent nodes on the upper surface. The intercalary zone bears two narrow grooves and a series of platelets, similar to but smaller than the plates. The remainder of each segment is occupied by microplates.Palaeoscolex piscatorumis fairly similar to a number of other species, includingGamoscolex herodesandMilaculum elongatum. Present evidence suggests the palaeoscolecidans are priapulid worms (or near relatives). Their abundance, combined with records from Burgess Shale-like occurrences, suggest priapulids were a major component of many Lower Palaeozoic benthic communities.
Jeffrey D. Stilwell - One of the best experts on this subject based on the ideXlab platform.
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Neutron tomography of Austrosequoia novae-zeelandiae comb. nov. (Late Cretaceous, Chatham Islands, New Zealand): implications for Sequoioideae phylogeny and biogeography
Journal of Systematic Palaeontology, 2017Co-Authors: Chris Mays, David J. Cantrill, Jeffrey D. Stilwell, Joseph J. BevittAbstract:The Tupuangi Flora of the Chatham Islands, New Zealand, reveals a south polar forest ecosystem, and important biogeographical links between eastern and western Gondwana. We employed neutron tomography (NT) to image Fossil Cupressaceae seed cones from the Upper Cretaceous (Cenomanian) strata of the Tupuangi Formation. This technique facilitated the non-destructive ‘virtual extraction’ of three-dimensional, coalified specimens, whilst they were still embedded within a large volume of supporting silicate sedimentary rock. This study is the first reported application of NT in palaeobotanical taxonomy, and the combination of virtual and manual extraction techniques enabled a more complete treatment than would otherwise be possible if taxonomic data were limited to only one of these approaches. The seed cones were identified as Austrosequoia novae-zeelandiae (Ettingshausen) Mays & Cantrill comb. nov. In this case, NT data supplemented the Compression Fossil data by providing details such as the three-dimensiona...
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a first record of cretaceous aphids hemiptera sternorrhyncha aphidomorpha in australia from the lower cretaceous koonwarra Fossil bed victoria
Zootaxa, 2016Co-Authors: Sarah K Martin, Luke I Skidmore, Jeffrey D. StilwellAbstract:This paper describes the first species of aphid from the Lower Cretaceous Koonwarra Fossil Bed of the Gippsland Basin, southeastern Victoria, Australia. This aphid, herein named Koonwarraphis rotundafrons gen. & sp. nov., is assigned to the cosmopolitan Cretaceous superfamily Tajmyraphidoidea, which has been previously described from the Lebanese, Taimyrian, Canadian, Myanmar (Burmese), and Spanish ambers. Koonwarraphis rotundafrons is the first aphid recorded from the eastern Gondwanan landmass during the Cretaceous, and represents the only tajmyraphidoid preserved as a Compression Fossil, rather than as an amber inclusion. Due to the nature of the Fossil’s preservation, Koonwarraphis cannot be firmly placed in any of the described tajmyraphidoid families; however, all observable morphological features suggest that the genus is broadly typical of the superfamily and Cretaceous aphids in general. Koonwarraphis ’ shortened rostrum, a feature also seen in other tajmyraphidoids, suggests an association with the more herbaceous aspects of the Early Cretaceous Victorian flora. Considering the modern aphid preference for angiosperm plants, it is possible that this aphid was living upon the herbaceous early angiosperms recorded previously from the Koonwarra macrofloral assemblage.
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A first record of Cretaceous aphids (Hemiptera, Sternorrhyncha, Aphidomorpha) in Australia, from the Lower Cretaceous Koonwarra Fossil Bed, Victoria.
Zootaxa, 2016Co-Authors: Sarah K Martin, Luke I Skidmore, Jeffrey D. StilwellAbstract:This paper describes the first species of aphid from the Lower Cretaceous Koonwarra Fossil Bed of the Gippsland Basin, southeastern Victoria, Australia. This aphid, herein named Koonwarraphis rotundafrons gen. & sp. nov., is assigned to the cosmopolitan Cretaceous superfamily Tajmyraphidoidea, which has been previously described from the Lebanese, Taimyrian, Canadian, Myanmar (Burmese), and Spanish ambers. Koonwarraphis rotundafrons is the first aphid recorded from the eastern Gondwanan landmass during the Cretaceous, and represents the only tajmyraphidoid preserved as a Compression Fossil, rather than as an amber inclusion. Due to the nature of the Fossil’s preservation, Koonwarraphis cannot be firmly placed in any of the described tajmyraphidoid families; however, all observable morphological features suggest that the genus is broadly typical of the superfamily and Cretaceous aphids in general. Koonwarraphis ’ shortened rostrum, a feature also seen in other tajmyraphidoids, suggests an association with the more herbaceous aspects of the Early Cretaceous Victorian flora. Considering the modern aphid preference for angiosperm plants, it is possible that this aphid was living upon the herbaceous early angiosperms recorded previously from the Koonwarra macrofloral assemblage.
Romain Garrouste - One of the best experts on this subject based on the ideXlab platform.
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A new Babinskaiidae from the mid-Cretaceous Burmese amber (Insecta, Neuroptera, Myrmeleontoidea)
Cretaceous Research, 2020Co-Authors: Valerie Ngô-muller, Romain Garrouste, Jean-marc Pouillon, Julien Douteau, André NelAbstract:We describe Parababinskaia douteaui sp. nov., second representative of its genus in the mid-Cretaceous Burmese amber. This genus was originally known after a Compression Fossil from the Brazilian Crato Formation. The five other Burmese amber genera of Babinskaiidae are currently endemic to this area. This Early Cretaceous antlion family remains unrecorded after the Cenomanian.
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new lacewings insecta neuroptera osmylidae nymphidae from the lower cretaceous burmese amber and crato formation in brazil
Cretaceous Research, 2016Co-Authors: Justine Myskowiak, Dany Azar, Diying Huang, Romain GarrousteAbstract:Abstract One new osmylid genus and species, Burmaleon magnificus, and one new nymphid genus and species Rafaelnymphes cratoensis are described, respectively based on inclusions in the Cretaceous Burmese amber and on a Compression Fossil from the Crato Formation in Brazil. The nymphid Araripenymphes seldeni, from the Crato Formation, is redescribed on the basis of a new specimen, showing possible sexual dimorphism in wing coloration, a feature extremely rare among the Neuroptera. In a recently published phylogenetic analysis of the family, the attribution to the Fossil taxa (versus rejection) of the larval characters proper to the modern nymphids, has a crucial impact on the resolution of the phylogeny. The Compression Fossils currently attributed to the Nymphidae should be revised because their wing venation alone is not really sufficient for an accurate family attribution to Nymphidae rather than to another family of Neuroptera (viz. Osmylidae).
Dale E. Greenwalt - One of the best experts on this subject based on the ideXlab platform.
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Ptenidium kishenehnicum (Coleoptera: Ptiliidae), a new Fossil described from the Kishenehn oil shales, with a checklist of previously known Fossil ptiliids
Proceedings of the Entomological Society of Washington, 2013Co-Authors: Floyd W. Shockley, Dale E. GreenwaltAbstract:Ptenidium kishenehnicum Shockley and Greenwalt, a new species of feather-winged beetle (Coleoptera: Ptiliidae), is described from 46 million year old Kishenehn oil shales in Montana, USA. This Compression Fossil is the first beetle species to be described from this formation. A checklist of known Fossils and their ages is provided.
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Compression Fossil Mymaridae (Hymenoptera) from Kishenehn oil shales, with description of two new genera and review of Tertiary amber genera
ZooKeys, 2011Co-Authors: John T. Huber, Dale E. GreenwaltAbstract:Compression Fossils of three genera and six species of Mymaridae (Hymenoptera: Chalcidoidea) are described from 46 million year old Kishenehn oil shales in Montana, USA. Two new genera are described: Eoeustochus Huber, gen. n., with two included species, Eoeustochus kishenehn Huber (type species) and Eoeustochus borchersi Huber, sp. n., and Eoanaphes, gen. n., with Eoanaphes stethynioides Huber, sp. n. Three new species of Gonatocerus are also described, Gonatocerus greenwalti Huber, sp. n. , Gonatocerus kootenai Huber, sp. n., and Gonatocerus rasnitsyni Huber, sp. n. Previously described amber Fossil genera are discussed and five genera in Baltic amber are tentatively recorded as Fossils: Anagroidea, Camptoptera, Dorya, Eustochus, and Mimalaptus.
Dany Azar - One of the best experts on this subject based on the ideXlab platform.
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new lacewings insecta neuroptera osmylidae nymphidae from the lower cretaceous burmese amber and crato formation in brazil
Cretaceous Research, 2016Co-Authors: Justine Myskowiak, Dany Azar, Diying Huang, Romain GarrousteAbstract:Abstract One new osmylid genus and species, Burmaleon magnificus, and one new nymphid genus and species Rafaelnymphes cratoensis are described, respectively based on inclusions in the Cretaceous Burmese amber and on a Compression Fossil from the Crato Formation in Brazil. The nymphid Araripenymphes seldeni, from the Crato Formation, is redescribed on the basis of a new specimen, showing possible sexual dimorphism in wing coloration, a feature extremely rare among the Neuroptera. In a recently published phylogenetic analysis of the family, the attribution to the Fossil taxa (versus rejection) of the larval characters proper to the modern nymphids, has a crucial impact on the resolution of the phylogeny. The Compression Fossils currently attributed to the Nymphidae should be revised because their wing venation alone is not really sufficient for an accurate family attribution to Nymphidae rather than to another family of Neuroptera (viz. Osmylidae).