Tin 1 (Jurassic to of Tanzania)

Where: Lindi Region, Tanzania (9.7° S, 39.2° E: paleocoordinates 29.4° S, 16.7° E)

• coordinate estimated from map

When: Tangaru Formation, Middle Oxfordian to Middle Oxfordian (161.2 - 145.0 Ma)

Environment/lithology: terrestrial; lithified, calcareous siltstone and lithified, fine-grained, argillaceous sandstone

• At their type area the Tendaguru Beds form an

•approximately 110 m thick succession of three saurian

•beds with two marine intercalations, the Nerinea Bed

•and the Trigonia smeei Bed above the Lower and

•Middle Saurian Bed, respectively, and a third marine

•unit, the Trigonia schwarzi Bed, overlying the Upper

•Saurian Bed. The saurian beds have been described as

•mainly calcite-cemented siltstones and fine-grained

•sandstones, while the marine intercalations are predominantly

•calcite-cemented, bioclast-rich sandstones

•and silicious–sandy limestones (Heinrich et al. 2001;

•figure 1). Bussert and Aberhan (2004) interpreted

•conglomeratic layers in the Trigonia smeei Bed as

•storm deposits and in a few cases as tsunami deposits.

Size class: microfossils

Preservation: soft parts, original sporopollenin

Collection methods: chemical, hydrochloric, hydroflouric, sieve

Primary reference: E. Schrank. 2010. Pollen and spores from the Tendaguru Beds, Upper Jurassic and Lower Cretaceous of southeast Tanzania: palynostratigraphical and paleoecological implications. Palynology 34(1):3-42 [C. Jaramillo/G. Doria/A. Cardenas ]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 142755: authorized by Carlos Jaramillo, entered by Gabriela Doria on 16.04.2013, edited by Patricio Santamarina

Creative Commons license: CC BY (attribution)

Taxonomic list

 Pinales - Podocarpaceae
 Pinales - Araucariaceae
 Pinales - Cheirolepidiaceae
Classopollis spp. Pflug 1953
 Pinales -
Concavissimisporites spp. Delcourt and Sprumont 1955
 Schizaeales - Schizaeaceae
Biretisporites spp. Delcourt et al. 1963
Deltoidospora sp. Miner 1935
  - Selaginellaceae
Densoisporites sp. Dettmann 1963
Foraminisporis "sp. A" Krutzsch 1959
 Gymnospermophyta -
 Cupressales - Pinidae