Princess Bonebed, L2369 (Cretaceous to of Canada)

Also known as RTMP JR300, BB 300, DPP

Where: Alberta, Canada (50.7° N, 111.5° W: paleocoordinates 58.0° N, 76.0° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Dinosaur Park Formation (Belly River Group), Middle Campanian to Middle Campanian (83.5 - 70.6 Ma)

• middle of formation, 36 m above contact w/Oldman and 39 m below base of Bearpaw

• bed-level stratigraphic resolution

Environment/lithology: channel lag; fine-grained, medium, intraclastic sandstone and carbonaceous mudstone

• "hydraulically sorted lag deposit"
• "The lower half of the deposit is dominated by trough cross-bedded, fine-to-medium-grained sandstones (txss), intraclast conglomerates, and fossils. The upper half of the deposit comprises inclined heterolithic stratification (IHS)."

•

•"The sandstone comprises an assemblage of facies, and sedimentological and architectural features that indicate a paleochannel origin for the deposit (cf. Wood, 1985, 1989; Eberth, 2005). These include

•

•1. An overall upward-fining grain size pattern and thinning-upward set thickness. Grain sizes range from pebbly lag deposits at the base to very fine grained sandstone and mudstones from the middle of the deposit upward. Cross-bed set thicknesses range from ~1 m at the base (trough cross beds) up to cm-scale ripple cross lamination near the top.

•2. A basal lag of vertebrate fossils (the bonebed) mixed with ironstone intraclasts, angular to rounded mudstone clasts, and coalified plant remains."

•"3. Inclined heterolithic strata (IHS) dominate the upper one-half of the sandstone body and comprise alternating, decimeter-thick beds of organic-rich mudstone and fine grained sandstone that dip consistently toward the northeast."

Size classes: macrofossils, mesofossils

• "Highly focused, circular to oval areas of crushed laminar bone on 4 elements interpreted as evidence for biting."

•"A possible tooth mark is preserved on 1 element."

Collected in 2007-2009; reposited in the TMP

Collection methods: surface (in situ),

Primary reference: D. A. Eberth, D. C. Evans, and D. W. H. Lloyd. 2014. Occurrence and taphonomy of the first documented hadrosaurid bonebed from the Dinosaur Park Formation (Belly River Group, Campanian) at Dinosaur Provincial Park, Alberta, Canada. In D. A. Eberth & D. C. Evans (ed.), Hadrosaurs 502-523 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 167986: authorized by Matthew Carrano, entered by Matthew Carrano on 10.04.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Actinopteri
 Lepisosteiformes - Lepisosteidae
Lepisosteidae indet., Lepisosteus sp.
Lepisosteidae indet. Cuvier 1825 gar
Lepisosteus sp. Agassiz 1843 gar
 Amiiformes - Amiidae
Amiidae indet., Cyclurus sp.
Amiidae indet. Huxley 1861 bowfin
Cyclurus sp. Agassiz 1839 bowfin
Reptilia
 Choristodera - Champsosauridae
Champsosauridae indet.
Champsosauridae indet. Cope 1876 champsosaur
 Theropoda - Dromaeosauridae
Dromaeosauridae indet.
Dromaeosauridae indet. Colbert and Russell 1969 maniraptoran
 Theropoda - Tyrannosauridae
Tyrannosauridae indet.
Tyrannosauridae indet. Osborn 1906 tyrannosaurid
 Theropoda - Ornithomimidae
Ornithomimidae indet.
Ornithomimidae indet. Marsh 1890 ornithomimid
 Ornithischia -
Ornithischia indet.
Ornithischia indet. Seeley 1888 ornithischian
Most likely hadrosaur
 Ornithischia - Ankylosauridae
Ankylosauridae indet.
Ankylosauridae indet. Brown 1908 ankylosaurid
 Ornithischia - Hadrosauridae
Hadrosauridae indet., Lambeosaurinae indet.
Hadrosauridae indet. Cope 1869 hadrosaurid
Lambeosaurinae indet. Parks 1923 lambeosaurine
 Testudines - Nanhsiungchelyidae
Basilemys indet.
Basilemys indet. Hay 1902 turtle
 Testudines - Trionychidae
Trionychidae indet.
Trionychidae indet. softshell turtle
 Testudines - Chelydridae
Chelydridae indet.
Chelydridae indet. Swainson 1839 turtle
 Testudines - Macrobaenidae
? Macrobaenidae indet.
Osteichthyes
 Acipenseriformes - Polyodontidae
Polyodontidae indet.
Polyodontidae indet. Bonaparte 1838 paddlefish
Chondrichthyes
 Rajiformes - Rhinobatidae
Myledaphus sp.
Myledaphus sp. Cope 1876 guitarfish