The Jurassic Bajanzhargalanidae (Insecta: Grylloblattida?): New genera and species, and data on postabdominal morphology

The presumed phylogenetic link between extant ice-crawlers (Grylloblattidae = ‘crown-Grylloblattida’) and fossil species of the taxon concept Grylloblattida sensu Storozhenko (2002) is essentially based on postabdominal morphology. However, the fossil data are limited, and the interpretation is open...

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Veröffentlicht in:Ventricular Restraint Improves Outcomes in HF Patients with CRT. - 2011. - Amsterdam [u.a.]
1. Verfasser: Cui, Yingying (VerfasserIn)
Weitere Verfasser: Béthoux, Olivier (BerichterstatterIn), Klass, Klaus-Dieter (BerichterstatterIn), Ren, Dong (BerichterstatterIn)
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2015transfer abstract
Zugriff auf das übergeordnete Werk:Ventricular Restraint Improves Outcomes in HF Patients with CRT
Schlagworte:Genitalia Sexual size dimorphism Intra-specific variability Daohugou Grylloblattida Ovipositor Tarsus Abdomen Antenna
Umfang:29
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245 1 4 |a The Jurassic Bajanzhargalanidae (Insecta: Grylloblattida?): New genera and species, and data on postabdominal morphology 
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520 |a The presumed phylogenetic link between extant ice-crawlers (Grylloblattidae = ‘crown-Grylloblattida’) and fossil species of the taxon concept Grylloblattida sensu Storozhenko (2002) is essentially based on postabdominal morphology. However, the fossil data are limited, and the interpretation is open to debate. Here we investigate a sample of a poorly known fossil ‘grylloblattidan’ family, the Bajanzhargalanidae, collected from the Daohugou locality (Middle Jurassic, China). We describe Sinonele fangi gen. nov., sp. nov., Sinonele hei gen. nov., sp. nov., Sinonele phasmoides gen. nov., sp. nov., and Sinonele mini gen. nov., sp. nov. Thanks to the abundance and exceptional preservation of the material, we could document wing venation intra-specific variability, provide cues to identify male and female individuals, describe and tentatively interpret various body structures of both sexes, and discuss them with a broad pterygotan phylogenetic perspective. The Bajanzhargalanidae exhibit a puzzling combination of postabdominal characters leaving us inconclusive on their affinities, or lack thereof, with crown-Grylloblattida. Our contribution suggests that a substantial effort will be needed to further investigate postabdominal structures from comparatively ancient fossil insects preserved as rock imprints, because of their broad morphological disparity. 
520 |a The presumed phylogenetic link between extant ice-crawlers (Grylloblattidae = ‘crown-Grylloblattida’) and fossil species of the taxon concept Grylloblattida sensu Storozhenko (2002) is essentially based on postabdominal morphology. However, the fossil data are limited, and the interpretation is open to debate. Here we investigate a sample of a poorly known fossil ‘grylloblattidan’ family, the Bajanzhargalanidae, collected from the Daohugou locality (Middle Jurassic, China). We describe Sinonele fangi gen. nov., sp. nov., Sinonele hei gen. nov., sp. nov., Sinonele phasmoides gen. nov., sp. nov., and Sinonele mini gen. nov., sp. nov. Thanks to the abundance and exceptional preservation of the material, we could document wing venation intra-specific variability, provide cues to identify male and female individuals, describe and tentatively interpret various body structures of both sexes, and discuss them with a broad pterygotan phylogenetic perspective. The Bajanzhargalanidae exhibit a puzzling combination of postabdominal characters leaving us inconclusive on their affinities, or lack thereof, with crown-Grylloblattida. Our contribution suggests that a substantial effort will be needed to further investigate postabdominal structures from comparatively ancient fossil insects preserved as rock imprints, because of their broad morphological disparity. 
650 7 |a Genitalia  |2 Elsevier 
650 7 |a Sexual size dimorphism  |2 Elsevier 
650 7 |a Intra-specific variability  |2 Elsevier 
650 7 |a Daohugou  |2 Elsevier 
650 7 |a Grylloblattida  |2 Elsevier 
650 7 |a Ovipositor  |2 Elsevier 
650 7 |a Tarsus  |2 Elsevier 
650 7 |a Abdomen  |2 Elsevier 
650 7 |a Antenna  |2 Elsevier 
700 1 |a Béthoux, Olivier  |4 oth 
700 1 |a Klass, Klaus-Dieter  |4 oth 
700 1 |a Ren, Dong  |4 oth 
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