Near Chaomidian Village (GMC Beijing coll): Late/Upper Barremian, China
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Insecta
- Odonata
- Corduliidae
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Mesocordulia boreala n. gen., n. sp.
Ren and Guo 1996
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Ren and Guo 1996 | 2 specimens | ||||||||
LB94021, LB94022 (4 measurements) | ||||||||||
Insecta
- Odonata
- Gomphidae
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Liogomphus yixianensis n. gen., n. sp.
Ren and Guo 1996
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Ren and Guo 1996 | 1 specimen | ||||||||
LB94020 (2 measurements) | ||||||||||
Insecta
- Odonata
- Rudiaeschnidae
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Rudiaeschna limnobia n. gen., n. sp.
Ren and Guo 1996
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Ren and Guo 1996 | 2 specimens | ||||||||
LB94010, 94011 (6 measurements) | ||||||||||
Insecta
- Odonata
- Liassogomphidae
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Chrysogomphus beipiaoensis n. gen., n. sp.
Ren 1994
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Ren 1994 | 1 specimen | ||||||||
LB92020 (1 measurement) | ||||||||||
Insecta
- Raphidioptera
- Mesoraphidiidae
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Archeraphidia polyphlebia n. sp.
Ren 1994
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Ren 1994 | 1 specimen | ||||||||
recombined as Mesoraphidia polyphlebia | ||||||||||
Sh016(017) (1 measurement) | ||||||||||
Archeraphidia shangyuanensis n. sp.
Ren 1994
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Ren 1994 | 1 specimen | ||||||||
recombined as Mesoraphidia shangyuanensis | ||||||||||
Sh015 (1 measurement) | ||||||||||
Alloraphidia longistigmosa n. sp.
Ren 1994
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Ren 1994 | 1 specimen | ||||||||
recombined as Mesoraphidia longistigmosa | ||||||||||
Sh004 (2 measurements) | ||||||||||
Alloraphidia obliquivenatica n. sp.
Ren 1994
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Ren 1994 | 7 specimens | ||||||||
recombined as Stenoraphidia obliquivenatica | ||||||||||
Sh006, 005, 007, 008, 009, 010, 011 (2 measurements) | ||||||||||
Liaoraphidia fornicata n. gen., n. sp.
Ren 1994
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Ren 1994 | 1 specimen | ||||||||
recombined as Siboptera fornicata | ||||||||||
Sh003 (2 measurements) | ||||||||||
Insecta
- Raphidioptera
- Baissopteridae
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Baissoptera liaoningensis n. sp.
Ren 1994
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Ren 1994 | 1 specimen | ||||||||
Sh001(002) (2 measurements) | ||||||||||
Insecta
- Neuroptera
- Berothidae
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Oloberotha sinica n. gen., n. sp.
Ren and Guo 1996
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Ren and Guo 1996 | 1 specimen | ||||||||
LB95007(8) (2 measurements) | ||||||||||
Insecta
- Neuroptera
- Ithonidae
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Lasiosmylus newi n. gen., n. sp.
Ren and Guo 1996
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Ren and Guo 1996 | 1 specimen | ||||||||
LB95006 (2 measurements) | ||||||||||
Insecta
- Neuroptera
- Myrmeleontidae
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Choromyrmeleon othneius n. gen., n. sp.
Ren and Guo 1996
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Ren and Guo 1996 | 1 specimen | ||||||||
LB95013(4) (1 measurement) | ||||||||||
Insecta
- Neuroptera
- Kalligrammatidae
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Kalligramma liaoningensis n. sp.
Ren and Guo 1996
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Ren and Guo 1996 | 1 specimen | ||||||||
corrected as Kalligramma liaoningense | ||||||||||
LB95004(5) (1 measurement) | ||||||||||
Sophogramma papilionacea n. gen., n. sp.
Ren and Guo 1996
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Ren and Guo 1996 | 1 specimen | ||||||||
LB95001 (1 measurement) | ||||||||||
Sophogramma eucalla n. sp.
Ren and Guo 1996
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Ren and Guo 1996 | 1 specimen | ||||||||
LB95002(3) (1 measurement) | ||||||||||
Sophogramma plecophlebia n. sp.
Ren and Guo 1996
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Ren and Guo 1996 | 1 specimen | ||||||||
LB95009 (1 measurement) | ||||||||||
Insecta
- Neuroptera
- Chrysopidae
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Lembochrysa miniscula n. gen., n. sp.
Ren and Guo 1996
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Ren and Guo 1996 | 1 specimen | ||||||||
recombined as Mesypochrysa miniscula | ||||||||||
LB95010 (1 measurement) | ||||||||||
Lembochrysa polyneura n. sp.
Ren and Guo 1996
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Ren and Guo 1996 | 1 specimen | ||||||||
recombined as Mesypochrysa polyneura | ||||||||||
LB95012 (1 measurement) | ||||||||||
Insecta
- Neuroptera
- Mesochrysopidae
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Mesascalaphus yangi n. gen., n. sp.
Ren 1995
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1 specimen | |||||||||
LB93003 (3 measurements) | ||||||||||
Insecta
- Mecoptera
- Orthophlebiidae
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Orthophlebia liaoningensis n. sp.
Ren 1997
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Ren 1997 | 6 specimens | ||||||||
LB95055(6), 95057, 95058, 95059, 95060, 95061 (1 measurement) | ||||||||||
Insecta
- Mecoptera
- Bittacidae
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Sibirobittacus atalus n. sp.
Ren 1997
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Ren 1997 | 2 specimens | ||||||||
LB95052(3), 95054(5) (2 measurements) | ||||||||||
Megabittacus beipiaoensis n. sp.
Ren 1997
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Ren 1997 | 1 specimen | ||||||||
LB95051 (1 measurement) | ||||||||||
Megabittacus colosseus n. gen., n. sp.
Ren 1997
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Ren 1997 | 1 specimen | ||||||||
LB95050 (2 measurements) | ||||||||||
Insecta
- Hemiptera
- Lalacidae
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Lapicixius decorus n. gen., n. sp.
Ren et al. 1998
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Ren et al. 1998 | 10 specimens | ||||||||
LB97152(3), 97150(1), 97154, 97155(6), 97157, 97158(9), 97160, 97161(2), 97163, 97164 (7 measurements) | ||||||||||
Insecta
- Hemiptera
- Procercopidae
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Anthoscytina aphthosa n. sp.
Ren et al. 1998
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Ren et al. 1998 | 15 specimens | ||||||||
recombined as Stellularis aphthosa | ||||||||||
LB97202, 97201, 97203-97205, 97207-97216 (5 measurements) | ||||||||||
Anomoscytina anomala n. gen., n. sp.
Ren et al. 1998
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Ren et al. 1998 | 1 specimen | ||||||||
LB97206 | ||||||||||
Insecta
- Hemiptera
- Palaeontinidae
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Liaocossus hui n. gen., n. sp.
Ren et al. 1998
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Ren et al. 1998 | 1 specimen | ||||||||
recombined as Ilerdocossus hui | ||||||||||
LB97104 (2 measurements) | ||||||||||
Liaocossus exiguus n. gen., n. sp.
Ren et al. 1998
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Ren et al. 1998 | 1 specimen | ||||||||
recombined as Ilerdocossus exiguus | ||||||||||
LB97103 (1 measurement) | ||||||||||
Liaocossus beipiaoensis n. gen., n. sp.
Ren et al. 1998
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Ren et al. 1998 | 1 specimen | ||||||||
recombined as Ilerdocossus beipiaoensis | ||||||||||
LB97101 (1 measurement) | ||||||||||
Miracossus ingentius n. gen., n. sp.
Ren et al. 1998
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Ren et al. 1998 | 1 specimen | ||||||||
LB97106 (2 measurements) | ||||||||||
Insecta
- Susumaniidae
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Hagiphasma paradoxa n. gen., n. sp.
Ren 1997
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Ren 1997 | 1 specimen | ||||||||
LB96001(2) (2 measurements) | ||||||||||
Hagiphasmatidae indet.
Ren 1997
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Ren 1997 | 1 specimen | ||||||||
synonym of Susumaniinae | ||||||||||
LB96003 | ||||||||||
Insecta
- Orthoptera
- Elcanidae
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Liaonemobius tanae n. gen., n. sp.
Ren 1998
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Ren 1998 | 2 specimens | ||||||||
LB97301(2), 97303 (1 measurement) | ||||||||||
Insecta
- Blattodea
- Mesoblattinidae
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Nipponoblatta acerba n. sp.
Ren 1995
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1 specimen | |||||||||
LB93003 (1 measurement) | ||||||||||
Insecta
- Diptera
- Archisargidae
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Pauromyia oresbia n. gen., n. sp.
Ren 1998
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Ren 1998 | 1 specimen | ||||||||
recombined as Sharasargus oresbius | ||||||||||
LB97022 (2 measurements) | ||||||||||
Helempis yixianensis n. gen., n. sp.
Ren 1998
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Ren 1998 | 1 specimen | ||||||||
recombined as Ovisargus (Helempis) yixianensis | ||||||||||
LB97024 (2 measurements) | ||||||||||
Helempis eucalla n. sp.
Ren 1998
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Ren 1998 | 1 specimen | ||||||||
recombined as Ovisargus eucalla | ||||||||||
LB97025 (2 measurements) | ||||||||||
Allomyia ruderalis n. gen., n. sp.
Ren 1998
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Ren 1998 | 1 specimen | ||||||||
recombined as Sinallomyia ruderalis | ||||||||||
LB97020 (2 measurements) | ||||||||||
Insecta
- Diptera
- Eremochaetidae
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Alleremonomus xingi n. gen., n. sp.
Ren and Guo 1995
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Ren and Guo 1995 | 2 specimens | ||||||||
LB94001, LB94002 (5 measurements) | ||||||||||
Alleremonomus liaoningensis n. sp.
Ren and Guo 1995
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Ren and Guo 1995 | 1 specimen | ||||||||
synonym of Alleremonomus xingi | ||||||||||
LB94003 (5 measurements) | ||||||||||
Lepteremochaetus lithoecius n. gen., n. sp.
Ren 1998
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Ren 1998 | 1 specimen | ||||||||
LB97023 (1 measurement) | ||||||||||
Insecta
- Diptera
- Tabanidae
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Eopangonius pletus n. gen., n. sp.
Ren 1998
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Ren 1998 | 1 specimen | ||||||||
LB97019 (2 measurements) | ||||||||||
Insecta
- Diptera
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Palaepangonius eupterus n. gen., n. sp.
Ren 1998
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Ren 1998 | 1 specimen | ||||||||
LB97017/8 (2 measurements) | ||||||||||
Insecta
- Diptera
- Rhagionidae
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Oiobrachyceron limnogenus n. gen., n. sp.
Ren 1998
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Ren 1998 | 1 specimen | ||||||||
LB97016 (2 measurements) | ||||||||||
Orsobrachyceron chinensis n. gen., n. sp.
Ren 1998
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Ren 1998 | 1 specimen | ||||||||
LB97015 (2 measurements) | ||||||||||
Insecta
- Diptera
- Nemestrinidae
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Florinemestrius pulcherrimus n. gen., n. sp.
Ren 1998
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Ren 1998 | 2 specimens | ||||||||
LB97008/9, 97011 (2 measurements) | ||||||||||
Protonemestrius beipiaoensis n. sp.
Ren 1998
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Ren 1998 | 3 specimens | ||||||||
LB97013, 97012, 97014 (2 measurements) | ||||||||||
Protonemestrius jurassicus n. sp.
Ren 1998
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Ren 1998 | 1 specimen | ||||||||
LB97005 (2 measurements) | ||||||||||
Insecta
- Diptera
- Empididae
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Protempis minuta n. sp.
Ren 1998
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Ren 1998 | 1 specimen | ||||||||
LB97021 (2 measurements) | ||||||||||
Insecta
- Diptera
- Protapioceridae
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Protapiocera ischyra n. sp.
Ren 1998
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Ren 1998 | 1 specimen | ||||||||
LB97003 (2 measurements) | ||||||||||
Protapiocera megista n. gen., n. sp.
Ren 1998
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Ren 1998 | 1 specimen | ||||||||
LB97001/2 (2 measurements) | ||||||||||
unclassified
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Sinaeschnidia cancellosa n. sp.
Ren 1995
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4 specimens | |||||||||
synonym of Sinaeschnidia heishankowense | ||||||||||
LB93005 (2 measurements) | ||||||||||
see common names |
Geography
Country: | China | State/province: | Liaoning |
Coordinates: | 41.6° North, 120.8° East (view map) | ||
Paleocoordinates: | 44.1° North, 122.9° East | ||
Basis of coordinate: | estimated from map | ||
Geographic resolution: | outcrop |
Time
Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
Stage: | Barremian | 10 m.y. bin: | Cretaceous 2 |
Key time interval: | Late/Upper Barremian | ||
Age range of interval: | 130.00000 - 125.45000 m.y. ago |
Stratigraphy
Geological group: | Jehol | Formation: | Yixian | ||
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: The Yixian Formation can be subdivided into five units, in ascending order, Lujiatun unit, Lower Lava, Jianshangou unit, Upper Lava, Dawangzhangzi unit, Jingangshan unit, and Huanghuashan unit. Most of the Jehol fossils from the Yixian Formation are preserved in four beds, that is, the Lujiatun bed (recalculated age is 124.0 ± 1.0/1.3 Ma, He et al., 2006), the Jianshangou bed (125.43 ± 0.50/0.88 Ma, Swisher et al., 1999), the Dawangzhangzi bed, and Jinggangshan bed (~122 Ma, Smith et al., 1995).U-Pb dating suggests that the Huangbanjigou section ranges from 124.9 ± 1.7 Ma to 122.8 ± 1.6 Ma (Yang et al., 2007). Chang et al. (2017) obtained Ar/Ar ages of 125.8 ± 1.0 Ma and 126.0 ± 0.8 Ma from the Lujiatun Unit, the lowest part of the Yixian Formation, below the lacustrine shales.
He et al. (2004) reported a 40Ar/39Ar age of 120.3 ± 0.7 Ma for a tuff layer in the lower part of the Jiufotang Formation, and Chang et al. (2009) obtained a 40Ar/39Ar age of 122.1 ± 0.3 Ma for a tuff layer from the lowermost part of the Jiufotang Formation. Yu et al. (2021) dated an ash bed just above the Yixian/Jiufotang formation boundary to 122.0 ± 0.9 Ma and three tuff beds from the Xiaotaizi section to 118.9 ± 0.8 Ma, 118.8 ± 0.6 Ma, and 118.6 ± 1.1 Ma. These ages suggest that the Jiufotang Formation in Jianchang Basin was deposited at ca. 122.0–118.9 Ma. Olierrok et al. (2019) used a selection of U-Pb and 40Ar-39Ar geochronology to place the Barremian–Aptian boundary (the base of the Chron M0r) between 123.8 and 121.8 Ma. The GTS 2020 uses an age of 121.4 Ma for the base of the Aptian, and multiproxy orbital tuning gives an age of 120.2 Ma for the Barremian-Aptian boundary (Leandro et al., 2022). Therefore, the Yixian Formation should be entirely Late Barremian, with the Jiufotang Formation deposited in the Early Aptian (or latest Barremian at its base). |
Lithology and environment
Primary lithology: | tuffaceous lithified mudstone | ||
Environment: | lacustrine - large | Tectonic setting: | rift |
Taphonomy
Modes of preservation: | adpression |
Lagerst�tten type: | conservation |
Size of fossils: | macrofossils,mesofossils |
Preservation of anatomical detail: | good |
Collection methods and comments
Reason for describing collection: | taxonomic analysis |
Collection method comments: Repository: Geological Museum of China, Beijing |
Metadata
Database number: | 138436 | ||
Authorizer: | M. Clapham | Enterer: | M. Clapham, J. Karr |
Modifier: | M. Clapham | Research group: | paleoentomology |
Created: | 2013-01-18 13:06:54 | Last modified: | 2023-07-19 23:01:12 |
Access level: | the public | Released: | 2013-01-18 13:06:54 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
35672. | D. Ren. 1995. Insecta. In D. Ren, L.W. Lu, Z.G. Guo, S.A. Ji (eds.), Faunae and stratigraphy of Jurassic-Cretaceous in Beijing and the adjacent areas 47-121 [M. Clapham/M. Clapham] |
Secondary references:
51316 | D. Ren. 1994. A new discovery of snake-flies (Insecta) from Late Jurassic of Beipiao, Liaoning. Professional Papers of Stratigraphy and Palaeontology 25:131-140 [M. Clapham/M. Clapham] | |
35433 | D. Ren. 1994. A new genera and species of Liassogomphidae (Insecta, Odonata) from Late Jurassic of Liaoning Province, China. Geosciences 8(3):254-258 [M. Clapham/J. Karr/J. Karr] | |
51653 | D. Ren. 1997. First record of fossil stick-insects from China (Phasmatodea: Hagiphasmatidae fam. nov.) with analysis of some palaeobiological features. Acta Zootaxonomica Sinica 22:268-281 [M. Clapham/M. Clapham/M. Clapham] | |
51218 | D. Ren. 1997. Studies on Late Jurassic scorpion-flies from northeast China (Mecoptera: Bittacidae, Orthophlebiidae). Acta Zootaxonomica Sinica 22:75-85 [M. Clapham/M. Clapham] | |
44333 | D. Ren. 1998. Late Jurassic Brachycera from northeastern China (Insecta: Diptera). Acta Zootaxonomica Sinica 23:65-82 [M. Clapham/M. Clapham] | |
48735 | D. Ren. 1998. First record of fossil crickets (Orthoptera: Trigonidiidae) from China. Entomologica Sinica 5:101-105 [M. Clapham/M. Clapham] | |
46372 | D. Ren and Z. Guo. 1995. A new genus and two new species of short-horned flies of Upper Jurassic from Northeast China (Diptera: Eremochaetidae). Entomologica Sinica 2(4):300-307 [M. Clapham/J. Karr/M. Clapham] | |
35443 | D. Ren and Z. Guo. 1996. Three new genera and three new species of dragonflies from the late Jurassic of Northeast China. Entomologica Sinica 3(2):95-105 [M. Clapham/J. Karr] | |
51217 | D. Ren and Z. G. Guo. 1996. On the new fossil genera and species of Neuroptera (Insecta) from the Late Jurassic of northeast China. Acta Zootaxonomica Sinica 21:461-479 [M. Clapham/M. Clapham] | |
51216 | D. Ren, J. C. Yin, and W. X. Dou. 1998. New planthoppers and froghoppers from the Late Jurassic of northeast China (Homoptera: Auchenorrhyncha). Acta Zootaxonomica Sinica 23:281-288 [M. Clapham/M. Clapham] | |
38220 | D. Ren, J. Yin, and W. Dou. 1998. Late Jurassic Palaeontinids (Homoptera; Auchenorrhyncha) from Hebei and Liaoning Provinces in China. Entomologia Sinica 5(3):222-232 [M. Clapham/J. Karr] |