La Riba, Tarragona, mud-mounds with reefal caps (Triassic of Spain)

Also known as Reef 56

Where: Spain (41.3° N, 1.2° E: paleocoordinates 5.9° N, 14.5° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Longobardian (242.0 - 235.0 Ma)

• "La Riba Unit"

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified lime mudstone and lithified framestone

• mounds on a carbonate ramp in moderate water depths
• Mounds are 5-70 m thick, 100 m wide and several kilometres in lenght. The dominant mound-core facies consists of massive lime mudstone to packstone, the overlying reefal facies of framestone.

Size classes: macrofossils, mesofossils, microfossils

Collection methods: peel or thin section,

Primary reference: F. Calvet and M. E. Tucker. 1995. Mud-mounds with reefal caps in the Upper Muschelkalk (Triassic), eastern Spain. in C. L. V. Monty, D. W. J. Bosence, P. H. Bridges, B. R. Pratt, eds., Carbonate mud-mounds - their origin and evolution. Special Publication International Association of Sedimentologists 23:311-333 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 73813: authorized by Wolfgang Kiessling, entered by Uta Merkel on 02.07.2007, edited by Wolfgang Kiessling

Creative Commons license: CC BY (attribution)

Taxonomic list

Cyanophyceae
  - Garwoodiaceae
Nodosariata
 Robertinida - Duostominidae
Duostomina sp. Kristan-Tollmann 1960
Foraminifera
  -
Ophthalmidium sp. Kübler and Zwingli 1870
 Trochamminacea - Trochamminidae
Trochammina sp. Parker and Jones 1859
 Hormosinacea - Hormosinidae
Reophax sp. Montfort 1808
Tubothalamea
 Miliolida - Meandrospiridae
Turriglomina sp. Limongi et al. 1987
Foraminifera
 Endothyroidea - Endothyridae
 Sphinctozoa -
Sphinctozoa indet. Steinmann 1882
Hydrozoa
  - Nigriporellidae
"Tubiphytes" sp. Maslov 1956
Anthozoa
 Scleractinia - Reimaniphylliidae
Retiophyllia sp. Cuif 1966 stony coral
Plexoramea cerebriformis
  -
Gastropoda
  -
Gastropoda indet. Cuvier 1795 snail
Bivalvia
  -
Bivalvia indet. Linnaeus 1758 clam
Polychaeta
 Sabellida - Serpulidae
Serpulidae indet. Rafinesque 1835
Deuteropoda
  -
Ostracoda indet. Latreille 1802 ostracod
unclassified
  -
Nullipora
  -
"Diplopora annulata" = Nullipora annulata
"Diplopora annulata" = Nullipora annulata Schafhaeutl 1853