New Eggshell Site, RTMP BB 98 (Cretaceous of Canada)

Also known as microvertebrate, NESS, DPP, Bonebed 98

Where: Alberta, Canada (50.8° N, 111.5° W: paleocoordinates 58.1° N, 76.0° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Dinosaur Park Formation (Belly River Group), Late/Upper Campanian (83.5 - 70.6 Ma)

• Microvertebrate sites of Brinkman (1990) are "...placed in stratigraphic sequence by reference to a disconformity located about sixty meters below the base of the Lethbridge Coal (Eberth, 1990). The stratigraphic position of each site is expressed in terms of meteres above or below the disconformity (Fig. 2, Brinkman, 1990)" where positive numbers are above and negative below. DPP-Brinkman section measurement = 1.0 m

• bed-level stratigraphic resolution

Environment/lithology: crevasse splay; fine-grained, medium, silty sandstone and lenticular, carbonaceous mudstone

• Splay deposits typically comprise stacked sequences of interlaminated sands and siltstones separated by erosional surfaces, thus indicating repeated flooding and aggradation.
• BB 98 occurs within a laterally extensive (>100 m) 1.5-2.5 m thick, horizontally laminated, fine-to-medium-grained sandstone lithosome. Fossils were collected from a 50 cm thick unit of contorted, silty, fine-to-medium-grained sandstone with small lenses of mudstone as well as carbonaceous laminae. Microfossils have een collected exclusively from this lower unit.

Size classes: macrofossils, mesofossils

Collected by D. Brinkman; reposited in the TMP

Collection methods: bulk, surface (float),

• Weight % fossil content 0.0545 kg fossil weight, fossil/sample = 0.03% (Table 3, Eberth 1990). Screenwashed elements were collected using a screen with 9 openings per centimeter.

Primary reference: D. B. Brinkman. 1986. Microvertebrate sites: progress and prospectus. In B. G. Naylor (ed.), Field Trip Guidebook to Dinosaur Provincial Park, 2 June 1986. Dinosaur Systematics Symposium, Tyrrell Museum of Palaeontology, Drumheller, Alberta 24-37 [M. Carrano/M. Carrano]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 47793: authorized by Robin Whatley, entered by Robin Whatley on 01.03.2005, edited by Matthew Carrano, Patricia Holroyd and John Alroy

Creative Commons license: CC BY (attribution)

Taxonomic list

• "many invertebrate shells"
Gnathostomata
  -
Amphibia
 Salientia -
Anura indet. Fischer von Waldheim 1813 frog
Anura "Gen. et sp. nov. 3"6 Fischer von Waldheim 1813 frog
Tyrrellbatrachus brinkmani n. gen. n. sp.5 Gardner 2015 frog
TMP 1985.066.0035 - holotype (incomplete right maxilla)
 Caudata - Urodela
Scapherpeton tectum2 Cope 1876 salamander
 Proteida - Batrachosauroididae
Opisthotriton kayi2 Auffenberg 1961 salamander
Reptilia
 Ornithischia -
 Ornithischia - Ceratopsidae
Ceratopsidae indet.2 Marsh 1888 ceratopsid
 Ornithischia - Hadrosauridae
Hadrosauridae indet.2 Cope 1869 hadrosaurid
 Theropoda -
 Theropoda - Elongatoolithidae
Continuoolithus canadensis9 Zelenitsky et al. 1996 theropod
 Theropoda - Dromaeosauridae
Saurornitholestes langstoni2 Sues 1978 maniraptoran
  - Prismatoolithidae
Prismatoolithus sp.9 Zhao and Li 1993 dinosaur
RTMP 2004.31.4
 Crocodylia -
Leidyosuchus canadensis2 Lambe 1907 crocodilian
 Choristodera -
Champsosaurus natator2 Parks 1933 choristodere
 Squamata -
 Testudines - Trionychidae
Trionychinae indet.1 Gray 1825 softshell turtle
 Testudines - Chelydridae
Chelydridae indet.2 Swainson 1839 turtle
Mammalia
  -
Mammalia indet.2 Linnaeus 1758 mammal
 Allotheria -
Multituberculata indet.3 Cope 1884 multituberculate
 Theriamorpha -
Metatheria indet.3 Huxley 1880 metatherian
Actinopteri
 Teleostei -
 Elopiformes - Phyllodontidae
Paralbula casei2 Estes 1969
 Albuliformes - Albulidae
Coriops amnicolus2 Estes 1969 bonefish
 Esociformes - Esocidae
Estesesox foxi8 Wilson et al. 1992
 Salmoniformes -
Esocoidea indet.2 Bleeker 1859
 Amiiformes - Amiidae
"Kindleia sp." = Cyclurus2
"Kindleia sp." = Cyclurus2 Agassiz 1839 bowfin
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp.2 Agassiz 1843 gar
may be same as Atractosteus occidentalis in Table 1?
Chondrichthyes
 Rajiformes - Rhinobatidae
Myledaphus bipartitus Cope 1876 guitarfish
Bivalvia
 Cardiida - Sphaeriidae
Sphaeriidae indet.7 Deshayes 1855 clam