Henry Farm (Cretaceous of Canada)

Where: Alberta, Canada (52.3° N, 113.1° W: paleocoordinates 60.0° N, 84.4° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Scollard Formation (Edmonton Group), Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• collection from about 10 m of section

•Eberth and Kamo, 2019: Combined with age data for the K-Pg boundary and a calibrated age-range for magnetochron 30n, our age for the Battle bentonite allows us to assess a maximum age of ~66.88 Ma for the base of the overlying Scollard Formation, and an age range of ~66.88–66.04 Ma for the K-ScF (the Cretaceous portion of the Scollard Formation).

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; poorly lithified, ferruginous, argillaceous sandstone and brown, carbonaceous shale

• "sandstone, soft, clayey, wash-covered; irregulary indurated, corss-bedded masses near middle of unit; beds of dark shale and sandy shale, and thin ironstone layers; forms miniature 'badlands'"

Size classes: macrofossils, mesofossils

Collection methods: quarrying, mechanical,

Primary reference: L. S. Russell. 1983. Evidence for an unconformity at the Scollard-Battle contact, Upper Cretaceous strata, Alberta. Canadian Journal of Earth Sciences 20(8):1219-1231 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 14569: authorized by John Alroy, entered by John Alroy on 30.04.1994, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Architaenioglossa - Viviparidae
Lioplacodes nebrascensis1 snail
ROMP 45907
Lioplacodes tenuicarinata1 snail
ROMP 45908
Viviparus leai1 snail
ROMP 45906
 Sorbeoconcha - Hydrobiidae
Hydrobia anthonyi1 snail
ROMP 45902
Hydrobia warrenana1 snail
ROMP 45903
 Heterostropha - Valvatidae
Valvata subumbilicata1 snail
ROMP 45904, 45905
Bivalvia
 Cardiida - Sphaeriidae
Pisidium squamula1 pea clam
ROMP 45901
Sphaerium formosum1 fingernail clam
ROMP 45899
Sphaerium fowleri1 fingernail clam
ROMP 45900
 Unionida - Unionidae
Plesielliptio cf. priscus1 Meek and Hayden 1856 freshwater mussel
ROMP 45898
Chondrichthyes
 Rajiformes - Rhinobatidae
Myledaphus bipartitus2 Cope 1876 guitarfish
ROM 26333, 26360, 26361
Osteichthyes
 Osteichthyes -
Osteichthyes indet.1 Huxley 1880 bony fish
ROM 41962, 41963
Mammalia
 Multituberculata - Neoplagiaulacidae
Neoplagiaulacidae indet.1 Ameghino 1890 multituberculate
ROM 26350, 26351
 Theriamorpha - Gypsonictopidae
Gypsonictops cf. hypoconus2 Simpson 1927 eutherian
ROM 26353
 Theriamorpha - Pediomyidae
"Pediomys cf. florencae" = Protolambda florencae2
"Pediomys cf. florencae" = Protolambda florencae2 Clemens 1966 metatherian
ROM 26352
Reptilia
 Testudines - Trionychidae
Trionychidae indet.1 softshell turtle
ROM 26338
 Testudines -
"Chelonia indet." = Testudines2
"Chelonia indet." = Testudines2 Batsch 1788 turtle
"genus and species undetermined"; ROM 26339
 Squamata -
cf. Parasaniwa wyomingensis2 Gilmore 1928 squamates
ROM 26341
 Crocodylia -
"Crocodilia indet." = Crocodylia1
"Crocodilia indet." = Crocodylia1 Owen 1842 crocodilian
"genus and species undetermined"; ROM 26342, 26363
 Ornithischia - Ceratopsidae
Ceratopsidae indet.1 Marsh 1888 ceratopsid
ROM 26348
Ceratopsidae indet.1 Marsh 1888 ceratopsid
"genus and species undetermined"; ROM 26347
 Ornithischia - Leptoceratopsidae
? Leptoceratops sp.2 Brown 1914 leptoceratopsid
ROM 26349
 Ornithischia - Hadrosauridae
Hadrosauridae indet.2 Cope 1869 hadrosaurid
"genus and species undetermined"; ROM 63535
 Ornithischia -
Thescelosaurus sp.1 Gilmore 1913 ornithopod
ROM 26346
 Theropoda - Dromaeosauridae
Richardoestesia isosceles1 Sankey 2001 maniraptoran
ROM 26345
 Theropoda - Tyrannosauridae
Tyrannosauridae indet.2 Osborn 1906 tyrannosaurid
"genus and species undetermined"; ROM 26343, 26344
 Choristodera -
Champsosaurus sp.2 Cope 1876 choristodere
ROM 26340, 63534
Actinopteri
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp.2 Agassiz 1843 gar
ROM 26334, 26335, 26358, 26359, 26362
 Amiiformes - Amiidae
"? Kindleia sp." = Cyclurus1
"? Kindleia sp." = Cyclurus1 Agassiz 1839 bowfin
ROM 26336, 26337, 26357