Bon Tsagaan (PIN collection 3559, outcrop 78/25) (Cretaceous of Mongolia)

Where: Mongolia (45.5° N, 99.1° E: paleocoordinates 46.1° N, 99.1° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Khurilt Member (Dzun-Bain Formation), Aptian (125.0 - 113.0 Ma)

• Possibly late Neocomian (Barremian)-early Aptian but typically treated as Aptian by paleoentomologists.

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine; lithified siliciclastic sediments

Size class: macrofossils

Preservation: adpression

Reposited in the PIN

Primary reference: K. Y. Eskov and S. Zonshtein. 1990. First Mesozoic mygalomorph spiders from the Lower Cretaceous of Siberia and Mongolia, with notes on the system and evolution of the infraorder Mygalomorphae (Chelicerata: Araneae). Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 178:325-368 [D. Smith/A. Kinchloe/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 146608: authorized by Matthew Clapham, entered by Matthew Clapham on 28.06.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

 Blattaria - Caloblattinidae
Nuurcala popovi Vršanský 2003 cockroach
PIN 3559/463, 564
 Dicondylia -
Blattodea indet. Latreille 1810 cockroach
PIN 3559/464
 Blattodea - Mesoblattinidae
Archimesoblatta altera Vršanský 1997 cockroach
PIN 3559/463
 Dicondylia - Blattulidae
Elisama parallela Vršanský 2003 winged insect
PIN 3559/466, 464
Elisama tsaganica Vršanský 1999 winged insect
PIN 3559/467, 468, 469
 Araneae - Atypidae
Ambiortiphagus ponomarenkoi n. gen. n. sp. Eskov and Zonshtein 1990 purse web spider
PIN 3559/5764