Hamilton (Carboniferous to of the United States)

Where: Kansas (37.0° N, 96.0° W: paleocoordinates 5.9° S, 31.2° W)

• coordinate based on nearby landmark

When: Hartford Limestone Formation, Bashkirian to Bashkirian (323.2 - 298.9 Ma)

• The fossils were recovered from a channel cut into the limestone, making it younger than the limestone itself.

• group of beds-level stratigraphic resolution

Environment/lithology: marginal marine

• Perhaps the remains of the Hamilton vegetation were carried by a freshwater stream to an estuary or delta where fresh and saltwater intermixed and depostion occurred.

Collection methods: surface (in situ),

• The geological information on the locality is extremely limited in the only paper (Leisman et al. 1988) that A. McGowan read. There are fuller descriptions available in other papers from the volume.

Primary reference: G. Mapes and G. W. Rothwell. 1988. Diversity among Hamilton conifers. In G. Mapes, R. H. Mapes (eds.), Regional Geology and Paleontology of Upper Paleozoic Hamilton Quarry Area in Southeastern Kansas. Guidebook, 22nd Annual Meeting, South-Central Section, Geological Society of America 225-244 [H. Sims/S. Ostrowski/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 11175: authorized by Hallie Sims, entered by Summer Ostrowski on 23.07.2001, edited by Alistair McGowan

Creative Commons license: CC BY (attribution)

Taxonomic list

Trigonocarpus sp.2 Brongniart 1828
 Coniferales -
 Cordaitanthales -
 Pinales -
Gomphostrobus sp.2 Marion 1890
 Peltaspermales - Peltaspermaceae
 Radiatopses - Medullosaceae
Neuropteris "sp. 1"2 Brongniart 1828
Neuropteris "sp. 2"2 Brongniart 1828
 Cordaitales -
  - Sigillariaceae
 Callistophytales -
Callistophyton sp.1 Delevoryas and Morgan 1954
  - Sphenopteridae
 Equisetales - Equisetidae
Triletes sp.2 Reinsch 1881
Pachytesta sp.2 Brongniart 1828