Reference health
Birds of the Crato Formation
22/22 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.
20 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 22 checked references that resolve
resolves10.1127/njgpm/1995/1995/118
Colour patterning preserved in Lower Cretaceous birds and insects: The Crato Formation of N.E. Brazil
resolves10.1007/s00114-004-0604-y
A new maniraptoran dinosaur from China with long feathers on the metatarsus
resolves10.1007/s10336-004-0050-9
A partial skeleton of a new fossil loon (Aves, Gaviiformes) from the early Oligocene of Germany with preserved stomach content
resolves10.1038/nature02855
Basal tyrannosauroids from China and evidence for protofeathers in tyrannosauroids
resolves10.1126/science.279.5358.1915
The Theropod Ancestry of Birds: New Evidence from the Late Cretaceous of Madagascar
resolves10.1146/annurev.ento.48.091801.112725
Feather Mites (Acari: Astigmata): Ecology, Behavior, and Evolution
resolves10.1038/nature03150
Definitive fossil evidence for the extant avian radiation in the Cretaceous
resolves10.1080/08912960410001674200
Ecology, Systematics and Biogeographical Relationships of Dinosaurs, Including a New Theropod, from the Santana Formation (?Albian, Early Cretaceous) of Brazil
resolves10.1016/j.crpv.2003.12.001
Body plumage in Archaeopteryx: a review, and new evidence from the Berlin specimen
resolves10.1127/njgpa/219/2001/241
A feather with possible ectoparasite eggs from the Crato Formation (Lower Cretaceous, Aptian) of Brazil
resolves10.1080/02724634.1992.10011438
<i>Neogaeornis wetzeli</i>Lambrecht, a Cretaceous loon from Chile (Aves: Gaviidae)
resolves10.1038/34356
An exceptionally well-preserved theropod dinosaur from the Yixian Formation of China
The 20 references without a DOI — listed, not checked
no DOI — not checkedEarly avian evolution in the Southern Hemisphere: the fossil record of birds in the Mesozoic of Gondwana
no DOI — not checkedImportant features of Caudipteryx – evidence from two nearly complete new specimens
no DOI — not checkedMesozoic Birds: Above the Heads of Dinosaurs
no DOI — not checkeda study based on the British Museum specimen
no DOI — not checkedSantana Fossils, an Illustrated Atlas
no DOI — not checkedJournal of Vertebrate Paleontology
no DOI — not checkedFossil down feather from the Lower Cretaceous of Brazil
no DOI — not checkedAn avian vertebra from the continental Cretaceous of Morocco, Africa
no DOI — not checkedPrimeiro registro de pena na Formação Santana (Cretáceo Inferior), Bacia do Araripe, nordeste do Brasil
no DOI — not checkedMesozoic Birds: Above the Heads of Dinosaurs
no DOI — not checkedMesozoic Birds: Above the Heads of Dinosaurs
no DOI — not checkedMesozoic Birds: Above the Heads of Dinosaurs
no DOI — not checkedMesozoic Birds: Above the Heads of Dinosaurs
no DOI — not checkedMesozoic Birds: Above the Heads of Dinosaurs
no DOI — not checked9780511535512.CBO9780511535512A051_CBO9780511535512bib1203
no DOI — not checkedFirst avian skeleton from the Mesozoic of northern Gondwana
no DOI — not checkedProceedings of the 5th Symposium of the Society of Avian Paleontology and Evolution
no DOI — not checkedA new feather from the Lower Cretaceous of Brazil
no DOI — not checked9780511535512.CBO9780511535512A051_CBO9780511535512bib1200
no DOI — not checked“Weichteil-Erhaltung” durch lithifizierte Mikroorganismen bei mittel-oezänen Vertebraten aus den Olschiefern der Grube Messel bei Darmstadt
What this badge says. CiteStamped means the CHECKABLE references of this
work were clean at the dated check: each resolved to a known work in a public registry, and none
carried a publisher retraction notice at that time. It says nothing about the quality, findings,
or importance of the work itself, and nothing about references deposited without a DOI.
checked 2026-07-14 — re-checked daily as this page is visited; titles and statuses come from Crossref and DataCite and are not part of the signed record
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