Tuvaella gigantea Community at type locality, Mongolian Altai (Silurian to of Mongolia)

Where: Mongolia (47.0° N, 93.0° E: paleocoordinates 36.7° N, 14.9° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Chokusin Formation, Wenlock to Wenlock (433.4 - 423.0 Ma)

• Late Wenlock/Early Ludlow. Uppermost parts of Chokusin layers.

• member-level stratigraphic resolution

Environment/lithology: marine; gray, green siltstone and sandy limestone

• "The overall lithology...suggests a shallow water, normally turbulent environment somewhat removed from the coast itself. Coarse, terrigenous deposits are absent...BA2-3."
• "At the type locality [community] occurs in fine- and medium-grained, quartzose sandstone interbedded with feldspathic, fine-grained sandstone, greenish-gray siltstone and claystone and calcareous sandstone with lenses of shelly sandstone. [Sandy limestone also mentioned. Fossils from siltstone, shelly, calcareous sandstone, and sandy limestone (corals)."

Size class: macrofossils

Collection methods: Community covers a broad geographic area. Only taxa explicitly said to occur at type locality are included.

Primary reference: K.H. S. Rozman. 1999. Silurian brachiopod communities of Mongolia. in A. J. Boucot and J. D. Lawson, eds., Paleocommunities - a case study from the Silurian and Lower Devonian 164-176 [M. Foote/C. Simpson]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 41061: authorized by Michael Foote, entered by Michael Foote on 06.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Emphasis of reference is on brachiopods. Other elements occasionally mentioned as well.
 Strophomenida - Leptostrophiidae
"Leptostrophia (Leptostrophiella) filosa" = Mesoleptostrophia filosa
"Leptostrophia (Leptostrophiella) filosa" = Mesoleptostrophia filosa Sowerby 1839
 Spiriferida - Hedeinopsidae
 Atrypida - Anazygidae
 Rhynchonellida - Eatoniidae
 Auloporida - Syringoporidae
Syringopora gorsky tabulate coral
Syringopora scabra tabulate coral
 Favositida - Favositidae
"Palaeofavosites asper" = Paleofavosites tabulate coral
Favosites lichenaroides tabulate coral
Favosites antiquus Sokolov 1951 tabulate coral
Mesofavosites obliquus Sokolov 1951 tabulate coral
 Favositida - Alveolitidae
 Heliolitida - Halysitidae
Halysites senior Klaamann 1961 tabulate coral
Halysites junior Klaamann 1961 tabulate coral