Reference health
Smithian-Spathian boundary event: Evidence for global climatic change in the wake of the end-Permian biotic crisis
16/16 checkable references clean · checked 2026-07-22
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 retraction, withdrawal, or removal notice.
5 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 16 checked references that resolve
resolves10.1080/09853111.1996.11105278
Late Permian and Early Triassic evolution of the Northern Indian margin: carbon isotope and sequence stratigraphy
resolves10.1016/j.palaeo.2006.02.003
The Early Triassic ammonoid recovery: Paleoclimatic significance of diversity gradients
resolves10.1111/j.1365-3121.2004.00588.x
<sup>40</sup>Ar/<sup>39</sup>Ar dating of Usol'skii sill in the south‐eastern Siberian Traps Large Igneous Province: evidence for long‐lived magmatism
resolves10.1073/pnas.96.24.13857
The delayed resurgence of equatorial forests after the Permian–Triassic ecologic crisis
resolves10.1016/0034-6667(94)90082-5
Palynostratigraphy of the Permian and lowermost triassic succession, Finnmark Platform, Barents sea
resolves10.1126/science.1101012
Age and Timing of the Permian Mass Extinctions: U/Pb Dating of Closed-System Zircons
resolves10.1016/j.epsl.2006.01.042
New Early to Middle Triassic U–Pb ages from South China: Calibration with ammonoid biochronozones and implications for the timing of the Triassic biotic recovery
resolves10.1126/science.1097023
Large Perturbations of the Carbon Cycle During Recovery from the End-Permian Extinction
resolves10.1007/BF01821119
Marine Triassic faunas of North America: Their significance for assessing plate and terrane movements
resolves10.1080/01916122.1998.9989505
Biostratigraphy and sequence stratigraphy of the lower and middle Triassic deposits from the Svalis Dome, Central Barents Sea, Norway
resolves10.1007/BF01822140
Palynology of the circum-mediterranean triassic: Phytogeographical and palaeoclimatological implications
resolves10.1144/0016-764903-087
Volcanism, CO
<sub>2</sub>
and palaeoclimate: a Late Jurassic–Early Cretaceous carbon and oxygen isotope record
resolves10.1016/S0031-0182(03)00450-4
Response of Early Cretaceous carbonate platforms to changes in atmospheric carbon dioxide levels
The 5 references without a DOI — listed, not checked
no DOI — not checkedi0091-7613-35-4-291-Grauvogel-Stamm1
no DOI — not checkedi0091-7613-35-4-291-Mork1
no DOI — not checkedi0091-7613-35-4-291-Tong1
no DOI — not checkedi0091-7613-35-4-291-Utting1
no DOI — not checkedi0091-7613-35-4-291-Weitschat1
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