Las Juntas, Sierra de Baza (Triassic to of Spain)

Also known as Reef 3611

Where: Spain (37.3° N, 2.9° W: paleocoordinates 2.1° N, 10.9° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Illyrian to Illyrian (247.2 - 235.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified bafflestone and lithified reef rocks

• The mounds developed at the edge of a platform seaward of a calcarenite barrier.
• Mounds consist of a core of bafflestone texture, with abundant sphinctozoans, hermatypic corals, inozoans, hydrozoans, solenoporaceans and dasycladaceans, covered on top by a boundstone formed by clusters of tubular organisms (serpulids) encrusted by Spongiostromata and with abundant interspace voids filled in by synsedimentary cements. At the top of the bioconstructions there exists a micrite facies with abundant fenestrae. The thickness of a single mound ranges from 1 to 10 m.

Size class: macrofossils

Collection methods: peel or thin section,

Primary reference: J. M. Martin and J. C. Braga. 1987. Bioconstrucciones del Anisiense-Ladiniense en el Trias Alpujarride [Anisian-Ladinian (Triassic) bioconstructions of the Alpujarrides, Spain]. Cuadernos de Geologia Iberica 11:421-444 [W. Kiessling/U. Merkel/U. Merkel]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 73970: authorized by Wolfgang Kiessling, entered by Uta Merkel on 16.07.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

 Corallinales - Corallinophycidae
Parachaetetes sp. Deninger 1906
 Spongiomorphida - Spongiomorphidae
 Hexacorallia -
Scleractinia indet. Bourne 1900 stony coral
 Scleractinia - Margarophylliidae
Margarosmilia sp. Volz 1896 stony coral
 Agelasida - Solenolmiidae
"? Dictyocoelia sp." = Solenolmia
"? Dictyocoelia sp." = Solenolmia Pomel 1872 demosponge
 Verticillitida - Colospongiidae
? Colospongia sp. Laube 1865 demosponge
 Hadromerida - Celyphiidae
? Uvanella sp. Ott 1967 demosponge
 Dasycladales - Polyphysaceae
Lamellitubus cauticus