MacronariaMatrix: a curated cross-matrix database of morphological phylogenetic characters in macronarian sauropods
Abstract
Morphological phylogenetic matrices are frequently expanded by reusing, modifying, splitting, or combining characters from earlier studies, which complicates comparisons based only on published character numbers. MacronariaMatrix v1.0.0 is a curated cross-matrix resource linking character occurrences among eight selected macronarian and titanosauriform sauropod matrices published from 2009 to 2026, with the 234-character Wilson (2002) matrix retained as a historical reference layer. The frozen release contains 855 active canonical character concepts, 2,377 character occurrences in the eight analysed matrices, 234 reference-layer occurrences, explicit relationship records for modified, split, merged, decomposed, and related character formulations, and a permanent ledger of 87 canonical-ID redirects. Each active concept has an anatomical-region assignment, and all occurrence and redirect identifiers pass release-level integrity checks. The resource supports reproducible comparison of character definitions, provenance, persistence, and reformulation while preserving source wording and numbering.
Related
- Decoupling Taxon Completeness and Phylogenetic Instability in Macronarian Sauropod Morphological Datasets
- Historical inheritance and expansion of morphological character sampling in macronarian sauropod phylogenetics
- How characters recoding, characters rescoring, and matrix combination weaken phylogenetic and taxonomic inference: the case of Scythicorhinus
- Morphological, molecular, and chemical characters support the transfer of the tropical demosponge genus Rhabdastrella to the family Geodiidae
- Morphological and Phylogenetic Characterization of Five Unrecorded Endophytic Fungal Species from Woody Plants in Korea
BibTeX
@misc{dookhy2026macronariamatrix,
title = {{MacronariaMatrix: a curated cross-matrix database of morphological phylogenetic characters in macronarian sauropods}},
author = {Chetan Dookhy},
howpublished = {PaleorXiv},
year = {2026},
month = sep,
doi = {10.31233/osf.io/dc7yg_v1},
url = {https://osf.io/preprints/paleorxiv/dc7yg_v1/},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - MacronariaMatrix: a curated cross-matrix database of morphological phylogenetic characters in macronarian sauropods
AU - Chetan Dookhy
PY - 2026
DA - 2026/09/28
PB - PaleorXiv
DO - 10.31233/osf.io/dc7yg_v1
UR - https://osf.io/preprints/paleorxiv/dc7yg_v1/
AB - Morphological phylogenetic matrices are frequently expanded by reusing, modifying, splitting, or combining characters from earlier studies, which complicates comparisons based only on published character numbers. MacronariaMatrix v1.0.0 is a curated cross-matrix resource linking character occurrences among eight selected macronarian and titanosauriform sauropod matrices published from 2009 to 2026, with the 234-character Wilson (2002) matrix retained as a historical reference layer. The frozen release contains 855 active canonical character concepts, 2,377 character occurrences in the eight analysed matrices, 234 reference-layer occurrences, explicit relationship records for modified, split, merged, decomposed, and related character formulations, and a permanent ledger of 87 canonical-ID redirects. Each active concept has an anatomical-region assignment, and all occurrence and redirect identifiers pass release-level integrity checks. The resource supports reproducible comparison of character definitions, provenance, persistence, and reformulation while preserving source wording and numbering.
ER -