Juncitarsus
genus of birds (fossil)
Juncitarsus is an extinct genus of wading birds from the Eocene of the United States and Germany. Though previously considered a flamingo, it is likely outside of Phoenicopteridae, possibly a basal member of the Mirandornithes (neither Phoenicopteriformes or Podicipediformes).
History
A small set of bones were collected in 1946 and 1947 by Charles Lewis Gazin, Franklin L. Pearce, and George F. Sternberg at a locality in the Bridger Formation of Wyoming. These bones were sent to be studied by Alexander Wetmore, though he could not identify the species. It was not until 1980 that they were named by Storrs L. Olson and Alan Feduccia. The nominate species was named J. gracillimus with the nomenclature meaning "slender reed ankle". A second species, J. merkeli from Germany was named in 1987 by Stefan Peters.
Description
The remains of J. gracillimus belong to at least three adult or nearly adult birds and one chick, which at the time of death could not fly. Different sizes of bones may indicate sexual dimorphism. In the holotype (USNM 244318), the left tarsometatarsus is almost completely preserved; only a small inner part of the proximal section is missing.
This brief starts where responsible research should: with the source description of “Juncitarsus” as genus of birds (fossil). Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the science & nature register because the source frames it as genus of birds (fossil). Its deeper value depends on whether names, dates, institutions and citations support that framing.
Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated Feb 13, 2025. The linked authority identifier is Q3501072. The first chronological checks are 1946, 1947, 1980 and 1987.
Scientific names, classifications and consensus can change while older terminology persists in catalogues and historical literature. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Juncitarsus” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.