Biological Origins
ProjectReview pending

Evidence Ledger v2.1 · Framework migration

A claim is only as transparent as its source, layer, and limit.

This ledger separates what a publication reports from what this project infers, and now identifies how each claim may be used across Framework v2.1. A DOI verifies identity; it does not guarantee that every interpretation is correct.

Nine preserved source-linked entries · no new scientific conclusion added

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Ledger method

Traceable, bounded, revisable.

Included: the nine sources already used for the whale ancestry case and core framework distinctions.

Bibliographic identity verified: publication title, authors, journal, and identifier checked. This does not independently validate the study’s conclusions or the project’s interpretation.

Not yet included: a completed transformation specification, a parameterized temporal model, a systematic literature search, independent risk-of-bias ratings, author conflict checks, or an external audit.

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AncestryExisting claims preserved

The whale ancestry assessment remains strong at the tested boundary.

Major Biological TransformationAssessment in progress

Relevant existing observations are mapped as context; they do not yet form a complete transformation assessment.

Temporal AdequacyAssessment in progress

No unsupported rates, population parameters, probabilities, or temporal conclusion have been added.

Biblical InterpretationSeparate from ledger scoring

Compatibility and theological claims do not increase scientific evidence scores.

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Explore · Research ledger

Find a claim. Inspect its role. Keep its limit attached.

Search publication details or filter the nine preserved records. “Limit on use” remains visible in every result and is never treated as optional fine print.

9 of 9 recordsBibliographic identity verified · scientific interpretation remains open to correction
W-F01Fossil observation and synthesis
Bibliographic identity verified
Observation / claim

Indohyus as a raoellid sister taxon close to cetaceans, with aquatic and whale-related traits.

Evidence role
ObservationHistorical inference
Framework v2.1 use
Whale ancestry evidence + historical and structural transformation context
Layer relevance
Both
Investigation
Whale origins
Source

Thewissen et al. “Whales originated from aquatic artiodactyls in the Eocene epoch of India.” Nature (2007).

DOI 10.1038/nature06343
Limit on use

Indohyus is not demonstrated to be a direct ancestor or the first whale.

Open record note

Bibliographic identity has been checked. This does not independently validate the study’s conclusions or the project’s interpretation.

Link to this record
W-F02Fossil observation and synthesis
Bibliographic identity verified
Observation / claim

The ordered, overlapping Eocene record of pakicetids, ambulocetids, remingtonocetids, protocetids and basilosaurids.

Evidence role
ObservationHistorical inference
Framework v2.1 use
Whale ancestry evidence + historical and structural transformation context
Layer relevance
Both
Investigation
Whale origins
Source

Bajpai, Thewissen & Sahni. “The origin and early evolution of whales: macroevolution documented on the Indian subcontinent.” Journal of Biosciences (2009).

DOI 10.1007/s12038-009-0060-0
Limit on use

This is a synthesis of a branching fossil record, not a direct ancestor-by-ancestor chain.

Open record note

Bibliographic identity has been checked. This does not independently validate the study’s conclusions or the project’s interpretation.

Link to this record
W-G01Molecular phylogenetic inference
Bibliographic identity verified
Observation / claim

Nested retroposon insertions placing cetaceans within Artiodactyla and with hippopotamuses as their closest living relatives.

Evidence role
ObservationHistorical inference
Framework v2.1 use
Whale ancestry evidence + DNA / genomics transformation context where supported
Layer relevance
Ancestry
Investigation
Whale origins
Source

Nikaido, Rooney & Okada. “Phylogenetic relationships among cetartiodactyls based on insertions of short and long interspersed elements: Hippopotamuses are the closest extant relatives of whales.” PNAS (1999).

DOI 10.1073/pnas.96.18.10261
Limit on use

The study examined a limited marker set and does not test universal common ancestry across extant cellular life.

Open record note

Bibliographic identity has been checked. This does not independently validate the study’s conclusions or the project’s interpretation.

Link to this record
W-G02Molecular phylogenetic inference
Bibliographic identity verified
Observation / claim

A large nuclear dataset produced mostly concordant, well-supported cetacean phylogenies sampled with hippopotamid and ruminant relatives.

Evidence role
ObservationHistorical inference
Framework v2.1 use
Whale ancestry evidence + DNA / genomics transformation context where supported
Layer relevance
Ancestry
Investigation
Whale origins
Source

McGowen et al. “Phylogenomic Resolution of the Cetacean Tree of Life Using Target Sequence Capture.” Systematic Biology (2020).

DOI 10.1093/sysbio/syz068
Limit on use

The study primarily resolves relationships within Cetacea; it is not a standalone test of the whale-artiodactyl boundary or of universal common ancestry.

Open record note

Bibliographic identity has been checked. This does not independently validate the study’s conclusions or the project’s interpretation.

Link to this record
W-G03Molecular phylogenetic inference
Bibliographic identity verified
Observation / claim

Retrotransposon homoplasy exists at a low but nonzero rate in the sampled toothed-whale genomes, so insertion loci require validation rather than being treated as infallible markers.

Evidence role
ObservationMethodological limitation
Framework v2.1 use
Whale ancestry evidence + DNA / genomics transformation context where supported
Layer relevance
Ancestry
Investigation
Whale origins
Source

Doronina, Ogoniak & Schmitz. “Homoplasy of Retrotransposon Insertions in Toothed Whales.” Genes (2023).

DOI 10.3390/genes14091830
Limit on use

The measured rate is within toothed whales and cannot simply be assigned to the 1999 artiodactyl insertion set.

Open record note

Bibliographic identity has been checked. This does not independently validate the study’s conclusions or the project’s interpretation.

Link to this record
W-D01Developmental observation and inference
Bibliographic identity verified
Observation / claim

Initiation and arrest of dolphin hind-limb development, including loss of maintained Fgf8 and absent Shh signaling.

Evidence role
ObservationMechanistic evidence
Framework v2.1 use
Developmental mechanism evidence + whale ancestry context
Layer relevance
Both
Investigation
Whale origins
Source

Thewissen et al. “Developmental basis for hind-limb loss in dolphins and origin of the cetacean bodyplan.” PNAS (2006).

DOI 10.1073/pnas.0602920103
Limit on use

Developmental evidence helps explain limb reduction; by itself it does not fix whales' exact phylogenetic placement.

Open record note

Bibliographic identity has been checked. This does not independently validate the study’s conclusions or the project’s interpretation.

Link to this record
F-U01Formal model comparison
Bibliographic identity verified
Observation / claim

A model-selection test that strongly favored universal common ancestry for the conserved protein data and alternatives examined.

Evidence role
Historical inferenceMethodological limitation
Framework v2.1 use
Ancestry framework evidence
Layer relevance
Ancestry
Investigation
Universal ancestry framework
Source

Douglas L. Theobald. “A formal test of the theory of universal common ancestry.” Nature (2010).

DOI 10.1038/nature09014
Limit on use

Its conclusion is conditional on the data, alignment assumptions and alternative models included in the comparison.

Open record note

Bibliographic identity has been checked. This does not independently validate the study’s conclusions or the project’s interpretation.

Link to this record
F-U02Published methodological critique
Bibliographic identity verified
Observation / claim

A published methodological challenge to the scope and sufficiency of Theobald's test.

Evidence role
Methodological limitation
Framework v2.1 use
Ancestry framework evidence
Layer relevance
Ancestry
Investigation
Universal ancestry framework
Source

Yonezawa & Hasegawa. “Was the universal common ancestry proved.” Nature (2010).

DOI 10.1038/nature09482
Limit on use

Criticizing one formal test does not erase the broader evidence for universal common ancestry.

Open record note

Bibliographic identity has been checked. This does not independently validate the study’s conclusions or the project’s interpretation.

Link to this record
F-L01LUCA reconstruction and inference
Bibliographic identity verified
Observation / claim

A recent, horizontal-transfer-aware reconstruction of LUCA's age, gene content and ecological context.

Evidence role
Historical inferenceMethodological limitation
Framework v2.1 use
Ancestry framework evidence
Layer relevance
Ancestry
Investigation
LUCA reconstruction
Source

Moody et al. “The nature of the last universal common ancestor and its impact on the early Earth system.” Nature Ecology & Evolution (2024).

DOI 10.1038/s41559-024-02461-1
Limit on use

LUCA properties are inferred and model-dependent; LUCA was not necessarily the first life or a single individual.

Open record note

Bibliographic identity has been checked. This does not independently validate the study’s conclusions or the project’s interpretation.

Link to this record

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Version 2.1 preserves the nine v1.0 entries and maps their permitted use to the new framework layers. No source, claim wording, or whale ancestry conclusion was silently replaced. A future temporal analysis must add explicit source-linked parameters, assumptions, ranges, and sensitivity records.

Review status and correction process

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