Mazon Creek (FMNH Gurley collection) (Carboniferous of the United States)

Where: Illinois (41.3° N, 88.4° W: paleocoordinates 4.6° S, 23.4° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Francis Creek Shale Member (Carbondale Formation), Westphalian D (311.4 - 306.9 Ma)

Environment/lithology: deltaic; lithified, concretionary, ferruginous mudstone

• Illinois basin
• ironstone concretions

Size class: macrofossils

Preservation: mold/impression

Collected by W. Gurley; reposited in the FMNH

Primary reference: A. L. Melander. 1903. Some additions to the Carboniferous terrestrial arthropod fauna of Illinois. Journal of Geology 11(2):178-198 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 122521: authorized by Matthew Clapham, entered by Matthew Clapham on 02.01.2012, edited by Conrad Labandeira and Jered Karr

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Cnemidolestodea - Spanioderidae
"Cheliphlebia extensa n. sp." = Miamia bronsoni
"Cheliphlebia extensa n. sp." = Miamia bronsoni Dana 1864 winged insect
FMNH 9241
 Blattodea - Mylacridae
? Mylacridae indet.3, "Mylacris gurleyi n. sp." = Orthomylacris gurleyi3, "Promylacris ovale n. sp." = Promylacris ovalis1
? Mylacridae indet.3 cockroach
small forewing fragment
"Mylacris gurleyi n. sp." = Orthomylacris gurleyi3 Scudder 1895 cockroach
"Promylacris ovale n. sp." = Promylacris ovalis1 Scudder 1885 cockroach
One additional (FMNH 9238) in Melander, 1903
 Protorthoptera - Eucaenidae
"Eucaenus mazonus n. sp." = Eucaenus ovalis
"Eucaenus mazonus n. sp." = Eucaenus ovalis Scudder 1885 winged insect
FMNH 9242
 Protorthoptera -
"Gerarus danae" = Chrestotella danae, "Dieconeura maxima n. sp." = Geraroides maximus
"Gerarus danae" = Chrestotella danae Scudder 1868 winged insect
FMNH 9245
"Dieconeura maxima n. sp." = Geraroides maximus Melander 1903 winged insect
FMNH 9244
 Notoptera - Adeloblattidae
"Progonoblattina columbiana n. sp." = Adeloblatta columbiana3
"Progonoblattina columbiana n. sp." = Adeloblatta columbiana3 Scudder 1895 winged insect
Arachnida
 Phalangiotarbida - Architarbidae
"Architarbus rotundatus" = Architarbus rotundatus, "Geraphrynus carbonarius" = Architarbus rotundatus
"Architarbus rotundatus" = Architarbus rotundatus Scudder 1868 phalangiotarbid
FMNH 9234
"Geraphrynus carbonarius" = Architarbus rotundatus Scudder 1868 phalangiotarbid
FMNH 9233
 Ricinulei - Curculioididae
"Kustarachne sulcata n. sp." = Amarixys sulcata
"Kustarachne sulcata n. sp." = Amarixys sulcata Melander 1903 hooded tickspider
FMNH 9235
 Opiliones -
"Kustarachne exstincta n. sp." = Kustarachne tenuipes
"Kustarachne exstincta n. sp." = Kustarachne tenuipes Scudder 1890 harvestman
FMNH 9236
Myriapoda
 Spirobolida - Xyloiulidae
"Xylobius frustulentus" = Xyloiulus frustulentus2
"Xylobius frustulentus" = Xyloiulus frustulentus2 Scudder 1890 millipede
 Euphoberiida - Euphoberiidae
Euphoberia tracta2 Scudder 1890 millipede
Euphoberia simplex2 Scudder 1890 millipede
Euphoberia spinulosa2 Scudder 1890 millipede
Euphoberia armigera2 Meek and Worthen 1868 millipede
Euphoberia cf. granosa2 Scudder 1882 millipede
Acantherpestes major2 Meek and Worthen 1868 millipede
"sent by Mr. W.F.E. Gurley"