3 mi south of Solomon (Cretaceous of the United States)

Also known as YPM 1129, T. anonymum referred locality

Where: Osborne County County, Kansas (38.9° N, 97.4° W: paleocoordinates 39.2° N, 62.6° W)

• coordinate estimated from map

When: Fairport Member (Carlile Shale Formation), Middle Turonian (93.5 - 89.3 Ma)

• "Williston (1908) also states that 'the type specimen collected by the late Professor Mudge [is] from nearly the same locality and doubtless the same horizon in the Upper Benton'. From this information we assume that the specimen was collected from the Fairport Chalk in Osborne County. This is also one reference in which Williston refers specifically to the Upper Benton (i.e. - Fairport Chalk and perhaps Blue Hill Shale; presumably the "Lower Benton" corresponded to the Graneros Shale and Greenhorn Limestone). If our (and Williston's) assumptions are correct, the specimen is early Middle Turonian in age" (Schumacher & Everhart 2005, p. 48).

• bed-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Collected by Mr Joseph Savage in 1873

Collection methods: quarrying,

• YPM collection

Primary reference: B. A. Schumacher and M. J. Everhart. 2005. A stratigraphic and taxonomic review of plesiosaurs from the old "Fort Benton Group" of central Kansas: a new assessment of old records. Paludicola 5(2):33-54 [R. Benson/R. Benson/R. Butler]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 117815: authorized by Roger Benson, entered by Roger Benson on 27.09.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

 Sauropterygia - Polycotylidae
"Trinacromerum anonymum" = Trinacromerum bentonianum
"Trinacromerum anonymum" = Trinacromerum bentonianum Cragin 1888 plesiosaur
YPM 1129 (partial skeleton and skull)