Also known as Reef 2668; 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, Lower Member (Tsagaan Del Formation), Katian (453.0 - 445.2 Ma)
• unit 2, 12 m thick. However, Rozman & Minzin (1980) give it as 10 meters. Chakyr or Chakyrii stage locally.
• bed-level stratigraphic resolution
Environment/lithology: reef, buildup or bioherm; lithified limestone
•
•Rozman & Minzhin 1980: Grey pelitomorphic, medium-laminated, compact (they form the high ridge recognizable in relief), organogenic limestones: individual intercalations are packed with gastropods, with scarce remains of tabulate corals; eastward along the strike, these coral-gastropod limestones are replaced by sandy brachiopod limestones with sandstone seams.
Size class: macrofossils
Collection methods: peel or thin section,
Primary reference: L. N. Bolshakova and L. M. Ulitina. 1985. Stromatoporaty i biostratigrafiya nizhnego paleozoya Mongolii [Stromatoporata and biostratigraphy of the Lower Paleozoic of Mongolia]. Trudy Sovmestnaya Sovetsko-Mongolskaya Paleontologicheskaya Ekspeditisiya [Transactions of the Joint Soviet-Mongolian Paleontological Expedition] 27:5-94 [W. Kiessling/U. Merkel]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 79589: authorized by Wolfgang Kiessling, entered by Uta Merkel on 14.03.2008, edited by Pete Wagner
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Stromatoporoidea | |
Clathrodictyon vormsiense Riabinin 1951 stromatoporoid sponge | |
Cystostroma fritzae stromatoporoid sponge | |
Anthozoa | |
Tabulata indet. Milne-Edwards and Haime 1850 tabulate coral | |
Transitolites transitus tabulate coral | |
Heliolitida indet. Frech 1897 tabulate coral | |
Procatenipora approximatoforma tabulate coral | |
Palaeophyllum thomi horn coral | |
Grewingkia venusta horn coral
Grewingkia contexta Neuman 1969 horn coral | |
Brachiopoda | |
Brachiopoda indet. Cuvier 1805 | |
Strophomenata | |
"Epacroplecia acuminata" = Craigella
"Epacroplecia acuminata" = Craigella | |
Leptaena praequalis Rozman 1977 | |
Eostrophonella antiqua Rozman 1977 | |
Rhynchonellata | |
Hesperorthis acuticostata, "Hesperorthis laticostata" = Hesperorthis latecostata
"Hesperorthis laticostata" = Hesperorthis latecostata Rozman 1977 | |
Rostricellula "sp. nov." Ulrich and Cooper 1942 |