Umgazana River [Umgazana Fm] (Cretaceous of South Africa)

Where: South Africa (31.7° S, 29.4° E: paleocoordinates 45.6° S, 6.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Umgazana Formation, Late/Upper Valanginian (140.2 - 136.4 Ma)

• STRATIGRAPHIC RELATIONS: From the Umgazana Fm, for which lithostratigraphic relationships are unknown. AGE: Early Valanginian, on the basis of ammonite and palynological biostratigraphy. STRATIGRAPHIC POSITION: Unknown position within unit.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; lithified, lenticular, shelly/skeletal limestone and lithified, green, sandy conglomerate

• ENVIRONMENT: Shallow marine siliciclastic setting.
• SPECIFIC LITHOLOGY: Darkish green conglomerates with some bands of coarse sandstone and grit, with occasional fossiliferous limestone lentils. LITHIFICATION: Lithified, assumed on the basis of facies descriptions from regionally dominant lithology, and figures from subsequent publications (e.g. Kennedy and Kinger 1977).

Size class: macrofossils

Collected by McLachlan et al.

Collection methods: surface (in situ),

• COLLECTORS: Collected by McLachlan et al. REPOSITORY: SAM.

Primary reference: H. C. Klinger and W. J. Kennedy. 1979. Cretaceous faunas from Southern Africa. Lower Cretaceous ammonites, including a new bochianitid genus, from Umgazana, Transkei. Annals of the South African Museum 78(2):11-19 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 82627: authorized by Austin Hendy, entered by Austin Hendy on 30.07.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Includes ammonites, bivalves, and some plants NOMENCLATURE: An authoritative publication for ammonites, with modern nomenclature. Not all taxa identified to species-resolution.
Show authors, comments, and common names
unclassified
  -
Onchiopsis sp.
Gastropoda
 Pseudomelanoidea - Pseudomelaniidae
Pseudomelania sp.
Pseudomelania sp. Pictet and Campiche 1862 snail
Bivalvia
 Lucinida - Mactromyidae
Thetironia sp.
Thetironia sp. Stoliczka 1870 clam
 Trigoniida - Trigoniidae
Trigonia sp.
Trigonia sp. Bruguière 1789 clam
Cephalopoda
 Ammonitida - Baculitidae
Baculites sp.
Baculites sp. Lamarck 1799 ammonite
 Ammonitida - Himantoceratidae
Umgazaniceras thieuloyi
Umgazaniceras thieuloyi Klinger and Kennedy 1979 ammonite
 Ammonitida - Bochianitidae
Bochianites cf. renevieri
Bochianites cf. renevieri Ooster 1860 ammonite
 Ammonitida - Neocomitidae
Neohoploceras sp.
Neohoploceras sp. Spath 1939 ammonite
Cycadopsida
 Cycadales -
"Nilssonia sp." = Nilsonia
"Nilssonia sp." = Nilsonia Brongniart 1825 cycads
Polypodiopsida
  -
Cladophlebis sp.
Cladophlebis sp. Brongniart 1849
 Bennettitales -
Dictyozamites sp., Otozamites sp.
Dictyozamites sp. Oldham 1863
Otozamites sp. Braun 1843