Jomsom A, bed 78d (Triassic of Nepal)

Where: Nepal (28.8° N, 83.7° E: paleocoordinates 31.2° S, 48.5° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Guembelites jandianus ammonoid zone, Upper Thinigaon Member (Mukut Formation), Lacian (221.5 - 215.6 Ma)

• informal "Upper Thinigaon" Beds

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal; lithified marl

• alternation of marly limestones and silty marls

Size class: macrofossils

Primary reference: L. Krystyn. 1982. Obertriassische Ammonoideen aus dem Zentralnepalesischen Himalaya (Gebiet von Jomsom) [Upper Triassic ammonoids from the central Nepalese Himalaya (Jomsom area)]. Abhandlungen der Geologischen Bundesanstalt 36:1-63 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 142480: authorized by Matthew Clapham, entered by Matthew Clapham on 12.04.2013, edited by Uta Merkel

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ceratitida - Juvavitidae
Guembelites jandianus von Mojsisovics 1896 ceratite
Guembelites clavatus McLearn 1939 ceratite
 Ceratitida - Tibetitidae
Thiniites acutus Wang and He 1976 ceratite