Wed . 19 Apr 2019

Kirtland Formation

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The Kirtland Formation originally the Kirtland Shale is a sedimentary geological formation It is the product of alluvial muds and overbank sand deposits from the many channels draining the coastal plain that existed on the inland seashore of North America, in the late Cretaceous period It overlies the Fruitland Formation It is found in the San Juan Basin in the states of New Mexico and Colorado, in the United States of America

The base of the Kirtland Formation and its lowest sub-unit, the Hunter Wash member, has been dated to 7455 ± 029 Ma Together with the upper part of the underlying Fruitland Formation, this contains fossils representing the Hunter Wash local fauna The border between the Hunter Wash member and overlying Farmington member dates to approximately 74 million years ago The top of the Farmington member and bottom of the overlying De-na-zin member has been radiometrically dated to 7337 ± 028 Ma ago The top of the De-na-zin member, which contains the Willow Wash local fauna, has been dated to 7304 ± 025 Ma ago

Overlying the De-na-zin member is a unit called the Naashoibito member This has often been considered to be part of the Kirtland formation, but more recently has been transferred back to the overlying Ojo Alamo Formation, which it had originally been part of

Contents

  • 1 Vertebrate Paleofauna
    • 11 Bony fish
    • 12 Cartilaginous fish
    • 13 Crurotarsans
    • 14 Ornithischians
    • 15 Pterosaurs
    • 16 Saurischians
    • 17 Turtles
  • 2 See also
  • 3 Footnotes
  • 4 References

Vertebrate Paleofauna

Bony fish

Bony fishes of the Kirtland Formation
Genus Species Location Member Abundance Notes

Melvius

M chauliodous

  • De-na-zin

Member of the Willow Wash local fauna

Cartilaginous fish

Cartilaginous fishes of the Kirtland Formation
Genus Species Location Member Abundance Notes

Myledaphus

M bipartitus

  • De-na-zin

Member of the Willow Wash local fauna

Crurotarsans

Color key
Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited
Crurotarsans of the Kirtland Formation
Genus Species Location Member Abundance Notes

Brachychampsa

B montana

  • De-na-zin

Member of the Willow Wash local fauna

Denazinosuchus

D kirtlandicus

  • De-na-zin

Member of the Willow Wash local fauna

Leidyosuchus

Indeterminate

  • De-na-zin

Member of the Willow Wash local fauna

Ornithischians

Color key
Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited
Ornithischians reported from the Kirtland Formation
Genus Species Location Member Material Notes Images

Ahshislepelta

A minor

  • Hunter Wash

Incomplete postcranial skeleton

Kritosaurus Parasaurolophus Titanoceratops ouranos

Anasazisaurus

A horneri

"Partial skull"

Kritosaurus

K navajovius

  • De-na-zin

Member of the Willow Wash local fauna

Naashoibitosaurus

Nostromi

  • De-na-zin

"Partial skull"

Member of the Willow Wash local fauna

Nodocephalosaurus

N kirtlandensis

  • De-na-zin

"Partial skull"

Member of the Willow Wash local fauna

Parasaurolophus

P tubicen

  • De-na-zin

"Disarticulated, associated skull and postcraniua, pertaining to at least individuals"

Member of the Willow Wash local fauna

Pentaceratops

P fenestratus

P sternbergi

  • De-na-zin
  • Hunter Wash

More common in the lower part of the formation

Member of the Willow Wash local fauna

Sphaerotholus

S goodwini

  • De-na-zin

Member of the Willow Wash local fauna

Stegoceras

S novomexicanum

  • Hunter Wash

"SMP VP-2790, incomplete parietal"

Also found in the upper Fruitland Formation

Titanoceratops

T ouranos

  • Hunter Wash

Member of the Willow Wash local fauna

Ziapelta

Z sanjuanensis

  • Hunter Wash
  • De-na-zin

Complete skull lacking the lower jaws, first two cervical half rings

Pterosaurs

Color key
Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited
Pterosaurs of the Kirtland Formation
Genus Species Location Member Abundance Notes

Navajodactylus

N boerei

Partial phalanx and ulna fragment

Hunter Wash Member

Saurischians

Color key
Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited
Saurischians of the Kirtland Formation
Genus Species Location Member Abundance Notes Images

Alamosaurus

A sanjuanensis

Erroneously identified as a member of the Willow Wash fauna, specimens actually from the Naashoibito member of the Ojo Alamo Formation

Bistahieversor

Aublysodon

A mirandus

Remains once attributed to the dubious tooth genus Aublysodon and later Daspletosaurus are now referred to Bistahieversor, although these remains OMNH 10131 may possibly have come from the Fruitland Formation

Bistahieversor

B sealeyi

  • Farmington
  • Hunter Wash

Daspletosaurus

Unnamed

  • De-na-zin
  • Farmington
  • Hunter Wash

Remains formerly referred to an unidentified or undescribed species of Daspletosaurus were originally attributed to the dubious tooth genus Aublysodon These remains were later reclassified as belonging to the new genus Bistahieversor Some of these remains OMNH 10131, however, may have originated in the Fruitland Formation

Ornithomimus

O sp

  • De-na-zin

Member of the Willow Wash local fauna

Saurornitholestes

S sullivani

  • De-na-zin

"Saurornitholestes"

"S" robustus

  • De-na-zin

Member of the Willow Wash local fauna Originally assigned to Saurornitholestes, actually a troodontid

Troodontidae

Indeterminate

Tyrannosauridae

Indeterminate

Turtles

Turtles of the Kirtland Formation
Genus Species Location Member Abundance Notes

Basilemys

B nobilis

  • De-na-zin

Member of the Willow Wash local fauna

Denazinemys

D nodosa

  • De-na-zin

Member of the Willow Wash local fauna

Neurankylus

N baueri

  • De-na-zin

Member of the Willow Wash local fauna

Plastomenus

P robustus

  • De-na-zin

Member of the Willow Wash local fauna

Thescelus

T hemispherica

  • De-na-zin

Member of the Willow Wash local fauna

See also

  • Earth sciences portal
  • Paleontology portal
  • Dinosaurs portal
  • List of stratigraphic units with dinosaur body fossils

Footnotes

  1. ^ a b c Sullivan, RM, and Lucas, SG 2006 "The Kirtlandian land-vertebrate "age" – faunal composition, temporal position and biostratigraphic correlation in the nonmarine Upper Cretaceous of western North America" New Mexico Museum of Natural History and Science, Bulletin 35:7-29
  2. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al am an ao ap aq ar as at au av aw ax ay az ba bb bc "Table 1," in Sullivan and Lucas 2006 Page 11 Note that the Willow Wash local fauna is entirely within the De-na-zin member; see "Biostratigraphy" page 8
  3. ^ a b Listed as "cf Leidyosuchus sp" in "Table 1," in Sullivan and Lucas 2006 Page 11 Note that the Willow Wash local fauna is entirely within the De-na-zin member; see "Biostratigraphy" page 8
  4. ^ a b c d Michael E Burns and Robert M Sullivan 2011 "A new ankylosaurid from the Upper Cretaceous Kirtland Formation, San Juan Basin, with comments on the diversity of ankylosaurids in New Mexico" PDF Fossil Record 3 New Mexico Museum of Natural History and Science, Bulletin 53: 169–178 CS1 maint: Uses authors parameter link
  5. ^ a b c "Table 201," in Weishampel, et al 2004 Page 439
  6. ^ a b c d e f g h i j k l m n "33 New Mexico, United States; 10 Lower Kirtland Formation," in Weishampel, et al 2004 Page 580
  7. ^ "Table 201," in Weishampel, et al 2004 Page 440
  8. ^ "Table 171," in Weishampel, et al 2004 Page 365
  9. ^ "Table 201," in Weishampel, et al 2004 Page 442
  10. ^ a b c "Kirtlandian Index Fossils," in Sullivan and Lucas 2006 Page 10
  11. ^ a b c d Steven E Jasinski and Robert M Sullivan 2011 "Re-evaluation of pachycephalosaurids from the Fruitland-Kirtland transition Kirtlandian, late Campanian, San Juan Basin, New Mexico, with a description of a new species of Stegoceras and a reassessment of Texascephale langstoni" PDF Fossil Record 3 New Mexico Museum of Natural History and Science, Bulletin 53: 202–215 CS1 maint: Uses authors parameter link
  12. ^ a b c d Arbour, Victoria M; Burns, Michael E; Sullivan, Robert M; Lucas, Spencer G; Cantrell, Amanda K; Fry, Joshua; Suazo, Thomas L 24 September 2014 "A New Ankylosaurid Dinosaur from the Upper Cretaceous Kirtlandian of New Mexico with Implications for Ankylosaurid Diversity in the Upper Cretaceous of Western North America" PLOS ONE PLOS 9 9: e108804 doi:101371/journalpone0108804 PMC 4177562  PMID 25250819 Retrieved 25 September 2014 
  13. ^ a b c d Robert M Sullivan and Denver W Fowler 2011 "Navajodactylus boerei, n gen, n sp, Pterosauria, Azhdarchidae from the Upper Cretaceous Kirtland Formation upper Campanian of New Mexico" PDF Fossil Record 3 New Mexico Museum of Natural History and Science, Bulletin 53: 393–404 CS1 maint: Uses authors parameter link
  14. ^ a b "33 New Mexico, United States; 10 Lower Kirtland Formation and 11 Upper Kirtland Formation," in Weishampel, et al 2004 Pages 580-581
  15. ^ Jasinski, S E, Sullivan, R M, & Lucas, S G 2011 Taxonomic composition of the Alamo Wash local fauna from the Upper Cretaceous Ojo Alamo Formation Naashoibito Member San Juan Basin, New Mexico Bulletin, 53, 216-271
  16. ^ a b c d e f "Systematic Paleontology," in Carr and Williamson 2010 Page 1
  17. ^ a b c d "Systematic Paleontology; Referred Specimens," in Carr and Williamson 2010 Page 1
  18. ^ a b c d "Systematic Paleontology; Holotype," in Carr and Williamson 2010 Page 1
  19. ^ https://wwwacademiaedu/12172255/A_new_dromaeosaurid_Theropoda_Dromaeosauridae_from_the_Late_Cretaceous_of_New_Mexico_B_and_W_
  20. ^ a b "Abstract," in Sullivan 2006 Page 253
  21. ^ David C Evans, Derek William Larson, Thomas Michael Cullen & Robert M Sullivan 2014 ‘Saurornitholestes’ robustus is a troodontid Dinosauria: Theropoda Canadian Journal of Earth Sciences advance online publication doi: 101139/cjes-2014-0073 http://wwwnrcresearchpresscom/doi/abs/101139/cjes-2014-0073#U4yjc_ldXTo
  22. ^ Listed as "cf Troodon sp" in "33 New Mexico, United States; 11 Upper Kirtland Formation," in Weishampel, et al 2004 Pages 580-581
  23. ^ Listed as "cf Tyrannosaurus sp" in "33 New Mexico, United States; 11 Upper Kirtland Formation," in Weishampel, et al 2004 Pages 580-581

References

  • Burns, Michael E 2008 "Taxonomic utility of ankylosaur Dinosauria, Ornithischia osteoderms: Glyptodontopelta mimus Ford, 2000: a test case" Journal of Vertebrate Paleontology 28 4: 1102–1109 doi:101671/0272-4634-2841102 
  • Carr, TD; Williamson, TE 2010 "Bistahieversor sealeyi, gen et sp nov, a new tyrannosauroid from New Mexico and the origin of deep snouts in Tyrannosauroidea" Journal of Vertebrate Paleontology 30 1: 1–16 doi:101080/02724630903413032 
  • Sullivan, RM 2006 "Saurornitholestes robustus, n sp Theropoda:Dromaeosauridae from the Upper Cretaceous Kirtland Formation De-Na-Zin member_, San Juan Basin, New Mexico" PDF NMMNH Bulletin 35: 253–256 
  • Sullivan, RM, and Lucas, SG 2006 "The Kirtlandian land-vertebrate "age" – faunal composition, temporal position and biostratigraphic correlation in the nonmarine Upper Cretaceous of western North America" New Mexico Museum of Natural History and Science, Bulletin 35:7-29
  • Weishampel, David B; Dodson, Peter; and Osmólska, Halszka eds: The Dinosauria, 2nd, Berkeley: University of California Press 861 pp ISBN 0-520-24209-2

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