Reference health
Intact microbial fossils in the Permian Lucaogou Formation oil shale, Junggar Basin, NW China
72/72 checkable references clean · checked 2026-07-14
Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a publisher retraction, withdrawal, or removal notice.
26 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
The 72 checked references that resolve
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The 26 references without a DOI — listed, not checked
no DOI — not checkedUpper Permian lacustrine oil shales, southern Junggar Basin, Northwest China
no DOI — not checkedConsiderations on a laser-scanning-microscope with high resolution and depth of field
no DOI — not checkedGenetic classification of petroleum systems
no DOI — not checkedBacterial sources of hopanoids in recent sediments: improving our understanding of ancient hopane biomarkers
no DOI — not checkedSEM imaging of bacteria and nannobacteria in carbonate sediments and rocks
no DOI — not checkedCharacteristics of selected petroleum-source rocks, Xinjiang Uygur Autonomous Region, northwest China
no DOI — not checkedEarly Proterozoic microfossils
no DOI — not checkedGeochemical alteration of organic matter in eutrophic Lake Greifen: implications for the determination of organic facies and the origin of lacustrine source rocks
no DOI — not checkedHumidity controlled diffractometry and its applications
no DOI — not checkedAspects of the petroleum geology of the Junggar basin, northwest China
no DOI — not checkedCarboniferous and Permian in the western part of the east Tianshan Mountains
no DOI — not checkedReconstruction of the Laurasian and Gondwanan segments of Permian Pangaea
no DOI — not checkedProkaryote mats replacing soft tissues in Mesozoic marine reptiles
no DOI — not checkedLithified prokaryotes associated with fossil soft tissues from the Santana Formation (Cretaceous) of Brazil
no DOI — not checkedProterozoic and selected Early Cambrian microfossils and microfossil-like objects
no DOI — not checkedNew filamentous and cystous microfossils, 2,300M.Y. old, from the Transvaal sequence
no DOI — not checkedTectonic, climatic, and biotic modulation of lacustrine ecosystems—examples from Newark Supergroup of eastern North America
no DOI — not checked10.1016/j.coal.2015.05.011_bb0340
no DOI — not checkedGuidelines for evaluating petroleum source rock using programmed pyrolysis
no DOI — not checkedBacteria and bacteria-like structures from the oil-shale of Messel
no DOI — not checkedDistribution of hopanoid triterpenes in prokaryotes
no DOI — not checkedEarth's earliest biosphere: status of the hunt
no DOI — not checkedArchean microfossils: new evidence of ancient microbes
no DOI — not checkedHopenes and hopanes methylated in ring-A: correlation of the hopanoids from extant methylotrophic bacteria with their fossil analogues
no DOI — not checked10.1016/j.coal.2015.05.011_bb0470
no DOI — not checkedThe Changhsingian conodont zonation and variation of organic carbon isotope of Huangshi Ermen section, Hubei Province
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