Roan Mountain (Scudder Coll) (Eocene of the United States)

Where: Colorado (39.5° N, 108.4° W: paleocoordinates 43.3° N, 95.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Green River Formation, Bridgerian (50.3 - 46.2 Ma)

Environment/lithology: lacustrine - large; shale

Size classes: macrofossils, mesofossils

Preservation: mold/impression, adpression

Collected by S. Scudder

Primary reference: T. D. A. Cockerell. 1921. Eocene Insects from the Rocky Mountains. Proceedings of the United States National Museum 57:233-260 [C. Labandeira/C. Labandeira/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 114681: authorized by Matthew Clapham, entered by Alex Aguilar on 20.08.2011, edited by Jered Karr and Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Hemiptera - Lophopidae
Scoparidea nebulosa n. gen. n. sp.
Scoparidea nebulosa n. gen. n. sp. Cockerell 1921 planthopper
USNM 66561
 Hemiptera - Ricaniidae
Hammapteryx tripunctata n. sp.2 Cockerell and Sandhouse 1921 planthopper
USNM 67717 (Scudder USGS 217/211)
 Hemiptera - Nogodinidae
Lithopsis simillima n. sp., Lithopsis dubiosa n. sp.2, Detyopsis packardi n. gen. n. sp., Detyopsis scudderi n. gen. n. sp.
Lithopsis simillima n. sp. Cockerell 1921 planthopper
USNMN 66557 coll Scudder
Lithopsis dubiosa n. sp.2 Cockerell and Sandhouse 1921 planthopper
USNM 67718 (Scudder USGS 105/106), USGS 123/129
Detyopsis packardi n. gen. n. sp. Cockerell 1921 planthopper
USNM 66558 coll Scudder (also USGS 180 in Cockerell & Sandhouse)
Detyopsis scudderi n. gen. n. sp. Cockerell 1921 planthopper
USNM 66559
 Hemiptera - Flatidae
Thaumastocladius simplex n. gen. n. sp.2
Thaumastocladius simplex n. gen. n. sp.2 Cockerell and Sandhouse 1921 planthopper
USNM 67719 (Scudder USGS 774)
 Hemiptera - Cicadellidae
"Erythroneura eocenica n. sp." = Thamnotettix eocenicus, Cicadella scudderi n. sp.
"Erythroneura eocenica n. sp." = Thamnotettix eocenicus Cockerell 1921 leafhopper
USNM 66566
Cicadella scudderi n. sp. Cockerell 1921 leafhopper
USNM 66565
 Hemiptera - Dinidoridae
Dinidorites margiformis1 Cockerell 1921 dinidorid bug
USGS 219(220), obtained by Scudder
 Coleoptera - Cerambycidae
"Lema pervetusta n. sp." = Clytus pervetustus
"Lema pervetusta n. sp." = Clytus pervetustus Cockerell 1921 longhorned beetle
USNM 66579
 Coleoptera - Belidae
? Paltorhynchus bisulcatus n. sp.4 Scudder 1893 weevil
USGS 295, 303 (richest beds at top of bluffs)
 Coleoptera - Curculionidae
Otiorhynchites commutatus n. sp.4 Scudder 1893 snout beetle
USGS 189 (richest beds at summit)
Otiorhynchites tysoni4 Scudder 1893 snout beetle
USGS 199 (richest beds at top)
Syntomostylus rudis4 Scudder 1893 snout beetle
USGS 104 (near richest shales on summit)
Procas vinculatus4 Scudder 1893 snout beetle
USGS 1038(1039) (richest beds at top)
Anthonomus soporus4 Scudder 1890 snout beetle
USGS 1048 (richest beds at summit)
Scythropus somniculosus n. sp.4 Scudder 1893 snout beetle
USGS 176 (richest beds at summit)
Calandrites cineratius4 Scudder 1893 snout beetle
USGS 49, 140, 151, 167, 206, 1019(1020), 1041, 1054 (richest beds at summit), 72, 130, 957, 1053 (near the same)
Calandrites defessus4 Scudder 1893 snout beetle
USGS 146, 185, 302 (richest beds at top)
Phyllobius antecessor n. sp.4 Scudder 1893 snout beetle
USGS 264(301) (richest beds at crest)
Pachylobius compressus4 Scudder 1893 snout beetle
USGS 138, 166, 197, 268, 280, 948, 1040, 1049, 1052 (richest beds at crest), 63 (near same)
Cossonus rutus n. sp.4 Scudder 1893 snout beetle
USGS 945(946) (uppermost layers)
Sciabregma rugosa n. gen. n. sp.4 Scudder 1893 snout beetle
USGS 94 (uppermost layers)
Epicaerus effossus4 Scudder 1876 snout beetle
USGS 1007(1008), 1017(1018), 1027(1028)
Epicaerus exanimis4 Scudder 1876 snout beetle
USGS 262, 1004, 1042 (richest beds top of bluffs); 3, 4, 35, 961 (a few feet lower)
"Eudiagogus terrosus" = Epicaerus terrosus4 Scudder 1878 snout beetle
USGS 1055 (richest shales at summit), 117 (slightly lower)
"Phyxelis excissus n. sp." = Epicaerus excissus4 Scudder 1893 snout beetle
USGS 1033 (richest shales at summit)
Epicaerus saxatilis4 Scudder 1876 snout beetle
USGS 953, 978 (near richest beds overlooking East Salt creek)
"Phyxelis evigoratus" = Epicaerus evigoratus4 Scudder 1893 snout beetle
USGS 960 (richest beds at summit)
"Scythropus subterraneus" = Epicaerus subterraneus4 Scudder 1893 snout beetle
USGS 943(4), 1045, 1051 (richest beds at top), 22 (near the same)
"Phyxelis eradicatus" = Epicaerus eradicatus4 Scudder 1893 snout beetle
USGS 1009(1010), 1060(1) (richest beds at summit)
"? Neoptocus sp." = Neoptochus4 Horn 1876 snout beetle
USGS 951 (near richest shales)
Ophryastes petrarum4 Scudder 1893 snout beetle
USGS 338(342) (most prolific beds at crest)
Cryptorhynchus durus n. sp.4 Scudder 1893 snout beetle
USGS 1031(1032) (richest beds at crest)
Coniatus refractus4 Scudder 1893 snout beetle
USGS 157 (richest beds at summit)
Sitona paginarum4 Scudder 1893 snout beetle
USGS 182, 958, 1050 (in and near richest beds)
Ophryastes grandis n. sp.4 Scudder 1893 snout beetle
USGS 102 (summit of bluffs at East Salt creek)
Otiorhynchus subteractus n. sp.4 Scudder 1893 snout beetle
USGS 54(133) (summit of bluffs at East Salt creek)
"Exomias obdurefactus n. sp." = Mitostylus obdurefactus4 Scudder 1893 snout beetle
USGS 309, 1002(3), 1005(6), 1035, 1056 (richest shales at summit); USGS 11 (near the same)
Cryptorhynchus annosus4 Scudder 1876 snout beetle
USGS 947 (richest beds at top)
Pachylobius depraedatus n. sp.4 Scudder 1893 snout beetle
USGS 1043 (richest beds at crest), 23, 59, 97 (near same)
Otiorhynchus flaccus n. sp.4 Scudder 1893 snout beetle
USGS 1 (close to richest beds at summit)
Rhyssomatus tabescens n. sp.4 Scudder 1893 snout beetle
USGS 1026 (richest beds at summit)
Ceutorhynchus degravatus n. sp.4 Scudder 1893 snout beetle
USGS 950 (richest beds at crest)
"Aulobaris circumscripta" = Lithogeraeus circumscripta4 Scudder 1893 snout beetle
USGS 294, 939(940), 1044, 1058 (riches beds at crest)
"Aulobaris anicilla n. sp." = Lithogeraeus anicilla4 Scudder 1893 snout beetle
USGS 935(937), 936(938), 1011(1012), 1062(1063) (richest beds at crest), 317(326) (shales in Indian trail)
Steganus barrandei n. gen. n. sp.4 Scudder 1893 snout beetle
USGS 1015(1016) (richest beds top of bluffs)
Ophryastites dispertitus n. sp.4 Scudder 1893 snout beetle
USGS 135 (richest beds at summit)
Polygraphus wortheni n. sp.4 Scudder 1893 bark beetle
USGS 959
 Coleoptera - Brentidae
"Apion evestigatum n. sp." = Apionion evestigatum4
"Apion evestigatum n. sp." = Apionion evestigatum4 Scudder 1893 weevil
USGS 1029(1030) (richest beds at summit)
 Coleoptera - Carabidae
Harpalus veterum n. sp. Cockerell 1921 ground beetle
USNM 66578
 Diptera - Anisopodidae
"Eothereva simplex n. sp." = Olbiogaster simplex
"Eothereva simplex n. sp." = Olbiogaster simplex Cockerell 1921 wood gnat
USNM 66573
 Diptera - Cylindrotomidae
Cylindrotoma veterana n. sp. Cockerell 1921 long bodied crane fly
USNM 66567
 Diptera - Limoniidae
"Gonomyia scudderi n. sp." = Rhabdomastix scudderi
"Gonomyia scudderi n. sp." = Rhabdomastix scudderi Cockerell 1921 crane fly
USNM 66568 coll Scudder
 Trichoptera - Limnephilidae
Limnephilus eocenicus n. sp. Cockerell 1921 caddisfly
USNM 66552 coll Scudder
 Odonata - Corduliidae
Stenogomphus carletoni n. gen. n. sp.3
Stenogomphus carletoni n. gen. n. sp.3 Scudder 1892 green-eyed skimmer
USGS 1146(1185) found by C.E. Davis (member of Scudder's party) in 1889