Tsagaan Del Unit 3. Right bank of Buriduin-Gol River, 4 km NE of Bor-kuduk well (Ordovician of Mongolia)

Also known as Tsagan-Del.

Where: Bayanhongor, Mongolia (46.4° N, 100.3° E: paleocoordinates 27.3° N, 20.5° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Pleurograptus linearis graptolite zone, Tsagaan Del Formation, Katian (453.0 - 445.2 Ma)

• Chakyrskii (Russian) or Bayan-Khongor (Mongolian) stages

• group of beds-level stratigraphic resolution

Environment/lithology: lithified, shelly/skeletal, gray, yellow, argillaceous, sandy limestone

• Yellowish-gray, argillaceous limestones, with seams of sandy, bryozoan-brachiopod-coral material

Size class: macrofossils

Collection methods: peel or thin section,

Primary reference: K.h. S. Rozman. 1977. New Orthida and Strophomenida from the Upper Ordovician of Mongolia. Paleontologicheskii Zhurnal 3:83-97 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 170488: authorized by Pete Wagner, entered by Pete Wagner on 22.06.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Stromatoporoidea
 Clathrodictyida - Clathrodictyidae
Clathrodictyon vormsiense1 Riabinin 1951 stromatoporoid sponge
 Labechiida - Rosenellidae
Cystostroma sp.1 Galloway and St Jean 1957 stromatoporoid sponge
Anthozoa
 Stauriida - Streptelasmatidae
Grewingkia venusta1 horn coral
Streptelasma duncani1 Dybowski 1873 horn coral
 Heliolitida - Sibiriolitidae
 Heliolitida - Halysitidae
Catenipora pulchella2 tabulate coral
Catenipora minima2 tabulate coral
Catenipora bumbugurae2 tabulate coral
 Lichenariida - Lyoporidae
Strophomenata
 Strophomenida - Strophonellidae
Eostrophonella antiqua n. sp. Rozman 1977
 Strophomenida - Furcitellidae
Oepikina sp. Salmon 1942
 Strophomenida - Rafinesquinidae
Leptaena praequalis n. sp. Rozman 1977
Rhynchonellata
 Orthida - Hesperorthidae
 Pentamerida - Parastrophinidae
"Parastrophinella asimmetrica" = Protanastrophia asimmetrica
"Parastrophinella asimmetrica" = Protanastrophia asimmetrica Rozman 1970
Parastrophinella asimmetrica longiplicata