地质通报
地質通報
지질통보
GEOLOGICAL BULLETIN OF CHINA
2006年
5期
560-564
,共5页
原长翅蝎蛉亚目%雕纹蝎蛉属%叶蝎蛉属%中三叠世%铜川组%陕西
原長翅蝎蛉亞目%彫紋蝎蛉屬%葉蝎蛉屬%中三疊世%銅川組%陝西
원장시갈령아목%조문갈령속%협갈령속%중삼첩세%동천조%협서
suborder Protomecoptera%Glyptochorista%Phyllochorista%Middle Triassic%Tongchuan Formation%Shaanxi
记述了原长翅亚目化石(Protomecoptera Tillyard,1917)在中国陕西铜川中三叠统中的首次发现,填补这个亚目化石在中国的空白.根据脉序特征,确定是2个新属、种:Glytochorista martynovae gen.et sp.,Phyllochorista orientis gen.et sp.nov.,属这个亚目的汤姆蝎蛉科Tomichoristidae O.Martynova,1958,从而将这个科的化石推向最高层位,即从早二叠世推向中三叠世,跨时5000多万年.从这个意义来讲,对研究该科从古生代晚期向中生代早期的演化有一定的重要参考价值.化石采自铜川中三叠世铜川组下段上部灰绿色泥页岩.新属、新种属于陕西昆虫群(系中三叠世陕西动物群或陕西生物群的一个化石门类)铜川昆虫组合的新成员,时代相当于欧洲拉丁尼期(Ladinian stage).
記述瞭原長翅亞目化石(Protomecoptera Tillyard,1917)在中國陝西銅川中三疊統中的首次髮現,填補這箇亞目化石在中國的空白.根據脈序特徵,確定是2箇新屬、種:Glytochorista martynovae gen.et sp.,Phyllochorista orientis gen.et sp.nov.,屬這箇亞目的湯姆蝎蛉科Tomichoristidae O.Martynova,1958,從而將這箇科的化石推嚮最高層位,即從早二疊世推嚮中三疊世,跨時5000多萬年.從這箇意義來講,對研究該科從古生代晚期嚮中生代早期的縯化有一定的重要參攷價值.化石採自銅川中三疊世銅川組下段上部灰綠色泥頁巖.新屬、新種屬于陝西昆蟲群(繫中三疊世陝西動物群或陝西生物群的一箇化石門類)銅川昆蟲組閤的新成員,時代相噹于歐洲拉丁尼期(Ladinian stage).
기술료원장시아목화석(Protomecoptera Tillyard,1917)재중국협서동천중삼첩통중적수차발현,전보저개아목화석재중국적공백.근거맥서특정,학정시2개신속、충:Glytochorista martynovae gen.et sp.,Phyllochorista orientis gen.et sp.nov.,속저개아목적탕모갈령과Tomichoristidae O.Martynova,1958,종이장저개과적화석추향최고층위,즉종조이첩세추향중삼첩세,과시5000다만년.종저개의의래강,대연구해과종고생대만기향중생대조기적연화유일정적중요삼고개치.화석채자동천중삼첩세동천조하단상부회록색니혈암.신속、신충속우협서곤충군(계중삼첩세협서동물군혹협서생물군적일개화석문류)동천곤충조합적신성원,시대상당우구주랍정니기(Ladinian stage).
The suborder Protomecoptera was erected by Tillyard in 1917 from Australian Late Triassic strata. However, Carpenter (1992) considered that Protomecoptera might belong to the suborder Eumecoptera. Recently two new fossil genera,Glyptochorista martynovae gen. et sp. nov. and Phyllochorista orientis gen. et sp. nov., have been discovered by the author for the first time in the Middle Triassic Tongchuan Formation of Shaanxi Province, China, and are assigned to the family Tomiochoristidae O. Martynova, 1958 of this suborder. Thus the family Tomiochoristidae is stratigraphically extended to the highest horizon, i.e. from the Early Permian to Middle Triassic, spanning more than 50 Ma. The discovery of thenew genera and species in China fills in the gaps in the field of protomecopterid of China and so has certain reference value for the study of the evolution of this family (Tomiochoristidae) from the Late Paleozoic to Early Mesozoic. The fossils were collected from grayish green mudstone-shale in the upper part of the Lower Member of the Middle Triassic Tongchuan Formation in Tongchuan. The new genera and new species are a new member of the Tongchuan Entomassemblage of the Shaanxi Entomofauna (a fossil group of the Mid Triassic Shaanxi fauna or Shaanxi biota) and their age is equivalent to the Ladinian stage of Europe.
