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

Show authors, comments, and common names
Insecta
 Coleoptera - Carabidae
Harpalus veterum n. sp.
Harpalus veterum n. sp. Cockerell 1921 ground beetle
USNM 66578
 Coleoptera - Cerambycidae
"Lema pervetusta n. sp." = Clytus pervetustus
"Lema pervetusta n. sp." = Clytus pervetustus Cockerell 1921 longhorned beetle
USNM 66579
 Coleoptera - Curculionidae
"Aulobaris anicilla n. sp." = Lithogeraeus anicilla4, "Aulobaris circumscripta" = Lithogeraeus circumscripta4, Steganus barrandei n. gen. n. sp.4, Scythropus somniculosus n. sp.4, Otiorhynchus flaccus n. sp.4, Otiorhynchites commutatus n. sp.4, Otiorhynchites tysoni4, Pachylobius depraedatus n. sp.4, Syntomostylus rudis4, Polygraphus wortheni n. sp.4, Sciabregma rugosa n. gen. n. sp.4, Ophryastites dispertitus n. sp.4, Cossonus rutus n. sp.4, Anthonomus soporus4, Phyllobius antecessor n. sp.4, Calandrites cineratius4, Calandrites defessus4, Sitona paginarum4, Ophryastes petrarum4, Ophryastes grandis n. sp.4, Coniatus refractus4, Cryptorhynchus durus n. sp.4, Otiorhynchus subteractus n. sp.4, "Exomias obdurefactus n. sp." = Mitostylus obdurefactus4, Epicaerus effossus4, "Phyxelis excissus n. sp." = Epicaerus excissus4, "Phyxelis evigoratus" = Epicaerus evigoratus4, Epicaerus exanimis4, "Eudiagogus terrosus" = Epicaerus terrosus4, "Phyxelis eradicatus" = Epicaerus eradicatus4, "Scythropus subterraneus" = Epicaerus subterraneus4, Epicaerus saxatilis4, "? Neoptocus sp." = Neoptochus4, Cryptorhynchus annosus4, Pachylobius compressus4, Rhyssomatus tabescens n. sp.4, Procas vinculatus4, Ceutorhynchus degravatus n. sp.4
"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)
"Aulobaris circumscripta" = Lithogeraeus circumscripta4 Scudder 1893 snout beetle
USGS 294, 939(940), 1044, 1058 (riches beds at crest)
Steganus barrandei n. gen. n. sp.4 Scudder 1893 snout beetle
USGS 1015(1016) (richest beds top of bluffs)
Scythropus somniculosus n. sp.4 Scudder 1893 snout beetle
USGS 176 (richest beds at summit)
Otiorhynchus flaccus n. sp.4 Scudder 1893 snout beetle
USGS 1 (close to richest beds at summit)
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)
Pachylobius depraedatus n. sp.4 Scudder 1893 snout beetle
USGS 1043 (richest beds at crest), 23, 59, 97 (near same)
Syntomostylus rudis4 Scudder 1893 snout beetle
USGS 104 (near richest shales on summit)
Polygraphus wortheni n. sp.4 Scudder 1893 bark beetle
USGS 959
Sciabregma rugosa n. gen. n. sp.4 Scudder 1893 snout beetle
USGS 94 (uppermost layers)
Ophryastites dispertitus n. sp.4 Scudder 1893 snout beetle
USGS 135 (richest beds at summit)
Cossonus rutus n. sp.4 Scudder 1893 snout beetle
USGS 945(946) (uppermost layers)
Anthonomus soporus4 Scudder 1890 snout beetle
USGS 1048 (richest beds at summit)
Phyllobius antecessor n. sp.4 Scudder 1893 snout beetle
USGS 264(301) (richest beds at crest)
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)
Sitona paginarum4 Scudder 1893 snout beetle
USGS 182, 958, 1050 (in and near richest beds)
Ophryastes petrarum4 Scudder 1893 snout beetle
USGS 338(342) (most prolific beds at crest)
Ophryastes grandis n. sp.4 Scudder 1893 snout beetle
USGS 102 (summit of bluffs at East Salt creek)
Coniatus refractus4 Scudder 1893 snout beetle
USGS 157 (richest beds at summit)
Cryptorhynchus durus n. sp.4 Scudder 1893 snout beetle
USGS 1031(1032) (richest beds at crest)
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)
Epicaerus effossus4 Scudder 1876 snout beetle
USGS 1007(1008), 1017(1018), 1027(1028)
"Phyxelis excissus n. sp." = Epicaerus excissus4 Scudder 1893 snout beetle
USGS 1033 (richest shales at summit)
"Phyxelis evigoratus" = Epicaerus evigoratus4 Scudder 1893 snout beetle
USGS 960 (richest beds at summit)
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 eradicatus" = Epicaerus eradicatus4 Scudder 1893 snout beetle
USGS 1009(1010), 1060(1) (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)
Epicaerus saxatilis4 Scudder 1876 snout beetle
USGS 953, 978 (near richest beds overlooking East Salt creek)
"? Neoptocus sp." = Neoptochus4 Horn 1876 snout beetle
USGS 951 (near richest shales)
Cryptorhynchus annosus4 Scudder 1876 snout beetle
USGS 947 (richest beds at top)
Pachylobius compressus4 Scudder 1893 snout beetle
USGS 138, 166, 197, 268, 280, 948, 1040, 1049, 1052 (richest beds at crest), 63 (near same)
Rhyssomatus tabescens n. sp.4 Scudder 1893 snout beetle
USGS 1026 (richest beds at summit)
Procas vinculatus4 Scudder 1893 snout beetle
USGS 1038(1039) (richest beds at top)
Ceutorhynchus degravatus n. sp.4 Scudder 1893 snout beetle
USGS 950 (richest beds at crest)
 Coleoptera - Belidae
? Paltorhynchus bisulcatus n. sp.4
? Paltorhynchus bisulcatus n. sp.4 Scudder 1893 weevil
USGS 295, 303 (richest beds at top of bluffs)
 Coleoptera - Brentidae
"Apion evestigatum n. sp." = Apionion evestigatum4
"Apion evestigatum n. sp." = Apionion evestigatum4 Scudder 1893 weevil
USGS 1029(1030) (richest beds at summit)
 Trichoptera - Limnephilidae
Limnephilus eocenicus n. sp.
Limnephilus eocenicus n. sp. Cockerell 1921 caddisfly
USNM 66552 coll Scudder
 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 - 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
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 - 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
Dinidorites margiformis1 Cockerell 1921 dinidorid bug
USGS 219(220), obtained by 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
 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.
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
1Cockerell 1925; 2Cockerell and Sandhouse 1921; 3Scudder 1892; 4Scudder 1893