Cape Stewart (gray sandstone) (Jurassic of Greenland)

Where: Greenland (70.4° N, 22.6° W: paleocoordinates 52.1° N, 5.8° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Cape Stewart Beds Formation, Pliensbachian (190.8 - 182.7 Ma)

• Callovian according to the author, based on resemblance to the fauna of Kuhn Island (repeated in the Index of Statigraphy of North America 1912 pg. 547).

•Revised as Charmouthian (Pliensbachian) by Rosenkrantz.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, fine-grained, micaceous, quartzose, gray, calcareous sandstone

• Sandstone, slightly calcareous rock with numerous small scales of white mica. Fine-grained, dense and somewhat quartzitic, sometimes conglomeratic.

Size classes: macrofossils, mesofossils

Primary reference: B. Lundgren. 1895. Jurafossil fran Kap Stewart i Ost-Gronland. Meddelelser om Gronland 7:191-214 [M. Clapham/M. Manojlovic/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 161208: authorized by Matthew Clapham, entered by Marko Manojlovic on 02.09.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Terebratulida - Lobothyrididae
Lobothyris sp. Buckman 1917
8-10 specimens
 Rhynchonellida - Tetrarhynchiidae
Grandirhynchia sp. Buckman 1917
Tetrarhynchia ? sp. Buckman 1917
Bivalvia
 Pectinida - Entoliidae
Entolium frontale, "Pecten callosus n. sp." = Entolium callosum
"Pecten callosus n. sp." = Entolium callosum Lundgren 1895 scallop
 Pectinida - Pectinoidae
"Aequipecten priscus" = Pecten priscus, Chlamys substriata
"Aequipecten priscus" = Pecten priscus Schlotheim 1820 scallop
Chlamys substriata Roemer 1835 scallop
 Pectinida - Limidae
"Lima (Plagiostoma) sp." = Plagiostoma, Limea acuticosta
"Lima (Plagiostoma) sp." = Plagiostoma Sowerby 1814 file clam
Limea acuticosta file clam
 Pectinida - Plicatulidae
 Pectinida - Anomiidae
Placunopsis minuta n. sp. Lundgren 1895 scallop
 Pectinida - Oxytomidae
"Oxytoma inaequivalve" = Oxytoma inequivalvis
"Oxytoma inaequivalve" = Oxytoma inequivalvis Sowerby 1819 scallop
 Ostreida - Gryphaeidae
Gryphaea cymbium Lamarck 1819 oyster
 Ostreida - Pinnidae
Pinna cf. folium Young and Bird 1822 oyster
 Mytilida - Mytilidae
Perna sp. Retzius 1788 mussel
 Carditida - Hippopodiidae
Hippopodium ponderosum Sowerby 1819 clam
 Carditida - Carditidae
 Pholadida - Pleuromyidae
 Pholadomyida - Pholadomyidae
Pholadomya ambigua Sowerby 1819 clam
 Protobranchia - Nuculanidae
Nuculana zieteni pointed nut clam
Gastropoda
 Ptychomphaloidea - Ptychomphalidae
 Turbinoidea - Turbinidae
Turbo sp. Linnaeus 1758 snail
 Pleurotomariida - Pleurotomariidae
Pleurotomaria sp. Defrance 1826 snail
Cephalopoda
 Belemnoidea -
Belemnitida indet. Zittel 1895 belemnite
 Ammonitida - Polymorphitidae
Uptonia jamesoni Sowerby 1827 ammonite