Genus: Daspletosaurus RUSSELL, 1970
Etymology: Greek, dasplet-(dasples) “frightful” and Greek, sauros “lizard”;
Frightful lizard.
= Chicagotyrannus BAKKER & CURRIE,
1987 (nomen nudum)
Etymology: In reference to the Field Museum in Chicago, and Greek, tyrannos, “tyrant, king.”
Note: I asked CURRIE about this and he doesn’t know what BAKKER is talking
about, in fact when I asked him it was the first he heard about it!
Species: torosus RUSSELL, 1970
Etymology: Latin, torosus, "muscular, brawny."
= Tyrannosaurus (Daspletosaurus) torosus (RUSSELL,
1979) PAUL, 1988a
Holotype: CMNFV 08506 (CMN, NMC 8506)
Locality: DPP Quarry 72 (Quarry 88 of Sternberg 1905, Little Sandhill Creek P2122), 2 miles SE of mouth of Little Sandhill Creek, near Steveville, Dinosaur
Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Oldman Formation, middle Judith River Group.
Note: Not in the Dinosaur Park Formation.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.
Material: Skull and lower jaws, skeleton lacking hind limbs.
Note: Palaeopathology, the distal end of one humerus exhibits an unspecified
pathology. Bite marks on the lower right dentary and left dentary (BROWN, CURRIE & THERRIEN, 2021).
Note: Furcula.
Referred material:
Locality: Near Manyberries, near centre NW. 1/4 sec. 36, tp.1, rge. 6, W. 4th mer., about 30 feet below prairie rim or 3,285 feet above sea level, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
NMC (CMN) 11594: Incomplete, weathered skull and lower jaws.
Note: Dentry with bite marks on the ventral and posterior portion of dentary (BROWN, CURRIE & THERRIEN, 2021).
Locality: Near Steveville, sec. 31, tp. 20, rge. 11, W. 4th Mer, Alberta Province, Canada.Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
NMC (CMN) 350: Left hind limb.
Locality: Steveville, Alberta Province, Canada.Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
UA 11: Right femur and fourth metatarsal.
BMNH R4863: Premaxilla, maxilla, and dentary.
Locality:?Horizon:?
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous
Material:
NMC (CMN) 9401: A nearly complete right lachrymal larger than the holotype of Tyrannosaurus rex.
Locality: Quarry 178, Badlands of the Red Deer River just west of Dinosaur Provincial Park, Alberta Province, Canada.Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP 1985.62.1 : Fragmentary skull and fragmentary skeleton.
Note: Has face bites (TANKE & CURRIE, (1998) 2000)CARR, 1999
RTMP 82.13.1, RTMP 83.38.1: Fragmentary skulls.
RTMP 94.218.1: Fragmentary skull.
Note: Juvenile/subadult.MOR 590: Maxilla.
Note: Juvenile/subadult.
CURRIE, 2003
Locality: Dinosaur Provincial Park, Quarry 210, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP 1992.036.1220: Skull and skeleton.
Note: Bite mark on the lower angular (BROWN, CURRIE & THERRIEN, 2021).YUN, 2021
SDNHM 35457: IV-1.
MALTESE, 2009
Locality: Fergus County, Montana.
Horizon: Judith River Formation.
Biostratigraphy:
Age: Judithian age, Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.
Material:
RMDRC 06-005: Fragmentary skull, and fragmentary skeleton.
cf. torosus RUSSELL, 1970Locality: Dry Island Park, SW 1/8, sec. 20, tp. 34, rge. 21, W. 4th mer., 150 feet above the south bank of Red Deer River, near Scollard, Alberta Province, Canada.
Horizon: Horseshoe Canyon Formation, Edmonton Group.
Note: Formerly Member B of the Edmonton Formation.Biostratigraphy:
Age: Edmontonian age, lower Maastrichtian Stage, Upper Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.
Material:
NMC (CMN) 11315: Scattered cranial elements, abdominal ribs, left forelimb, pelvis and hind limbs.
Note: Furcula.
Note: Juvenile/subadult.RYAN, RUSSELL, EBERTH & CURRIE, 2001
Locality: Centrosaurus bone bed (bone bed 43) Dinosaur Provinical Park, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
Number: Not given.
SCHUBERT & UNGAR, 2005
Locality: Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Oldman Formation, middle Judith River Group.
Note: Not in the Dinosaur Park Formation.Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.
Material:
RTMP 94.12.602: Tooth.
RTMP 97.12.223: Maxilla.
VARRICCHIO, 1999, 2001
Locality: Old Trail Museum Locality L-6, Bob’s Tuesday Site, Teton County, Montana.
Horizon: Two Medicine Formation.
Biostratigraphy:
Age: Judithian age, Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.
Material:
OTM 200: Several teeth, dentary, splenial, 30 vertebrae representing all regions (cervical, dorsal, sacral, and caudal), several ribs and chevrons, and most of the pelvis, fused pubes, portions of both ilia and ischium).
Note: Gut contents OTM 201 (hadrosaur) with acid-etched 4 caudal centra and a fragmentary dentary of a juvenile hadrosaur.
VORIS, ZELENITSKY, THERIEN & CURRIE, 2019
Locality: Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP 2013.18.11: Postorbital of a juvenile.
YUN, 2020
SDNHM 32701: An incomplete right frontal bone, lacking the rostral end of the nasal process, most of the sagittal crest and caudolateral parts of the bone.
= cf. Daspletosaurus torsus YUN, 2021
Locality: Unknown, Alberta Province, Canada.
Horizon: Dinosaur Park Formation?
Biostratigraphy:
Age: Middle-Late Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.
Material:
GMNH-PV 435: A nearly complete left metatarsal III lacking its proximal hood-shaped end of a juvenile.
= Chicagotyrannus chicagotyrannus BAKKER & CURRIE, 1987 (nomen nudum)
Etymology: In reference to the Field Museum in Chicago, and Greek, tyrannos, “king”.FMNH PR308
Locality: Quarry 223, Little Sandhill Creek Basin, Alberta Province, Canada.
Horizon: Oldman Formation, middle Judith River Group.
Note: Not in the Dinosaur Park Formation.Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material: Skull and skeleton lacking hind limbs and tail.
_____________________________________________________________________________________
Species: horneri CARR, VARRICCHIO, SEDLMAYR, ROBERTS & MOORE, 2017
Etymology: In honor of Jack Horner, in recognition of his successful field program in the Two Medicene Formation that has recovered many new species of dionsaurs that are critical for our understanding of the palaeobiology of dinosaurs in Laramidia, support in the preparation and curation of these specimens, and to acknowledge that his mentoring efforts have launched many professional scientific careers.
= Daspletosaurus Species: Nova VARRICCHIO & CURRIE, 1991
= Genus: Nova HORNER, VARRICCHIO & GOODWIN, 1992
Holotype: MOR 590
Locality: Glacier County, Montana.
Horizon: Two Medicine Formation, Judith River Group.
Biostrtigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material: Nearly complete skull and dentary.
Paratypes:
MOR 553S/7.19.0.97: Dentary of a juvinle.
Locality: Along the Sun River, Teton County, Montana.
Horizon: Two Medicine Formation, Judith River Group.
Biostrtigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
MOR 1130: Fragmentary skull and dentary.
Refered material:
Locality: Lewis and Clark County,Teton County, Montana.
Horizon: Two Medicine Formation, Judith River Group.
Biostrtigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
AMNH FARB 5477: Maxilla, partial postorbital, and parietal.
MOR 3068: A partial mandibular ramus.
MOR 553D.9.19.91: Left ectopterygoid.
MOR 553.7.6.91.196: Right ectopterygoid.
FUNSTON, POWERS, WHITEBONE, BRUSATTE, SCANNELLA, HORNER & CURRIE, 2021
Locality: Egg Gultch site (MOR localtiy No. TM-008), near Choteau, Choteau County, Montana.
Horizon: Two Medicine Formation, Judith River Group.
Biostrtigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
MOR 268: Dentary and teeth of a juvenile.
= cf. Daspletosaurus horneri YUN, 2022
Locality: Unknown, Montana.
Horizon: Two Medicine Formation, Judith River Group.
Biostrtigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
UC< 55499: Left frontal of a juvenile.
_____________________________________________________________________________________
Species: wilsoni WARSHAW & FOWLER, 2022
Etymology: In honor of John Wilson, the discoverer of the holotype speicmen.
Holotype: BDM 107
Locality: Jack's B2 site,, near Glasgow, Valley County, Montana.
Horizon:Judith River Formation.
Biostrtigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material: A partial disarticulated skull and postcranium, including both premaxillae, a right maxilla, jugal, lacrimal, quadrate, quadratojugal, dentary, splenial, a left postorbital and squamosal, partial cervical, sacral, and caudal series, a rib, a chevron and a first metatarsal.