Rebollarejo Hill, mud-mounds (Ordovician of Spain)

Also known as Reef 2422

Where: Aragon, Spain (41.2° N, 1.2° W: paleocoordinates 74.1° S, 74.9° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Rebollarejo Member (Cystoid Limestone Formation), Ashgill (449.5 - 443.7 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: slope or ramp reef; lithified bafflestone and lithified wackestone

• outer ramp
• Mud-mound complexes, individual mounds from 0.2 m thick and 0.4 m wide up to 1.8 m thick and 6 m wide. Mound facies: bafflestones, cementstones and cephalopod-rich mudstones/wackestones. Flanking beds: floatstones and packstones. Bryozoans and pelmatozoans 70% of fossil content.

Size class: macrofossils

Primary reference: E. Vennin, J. J. Alvaro, and E. Villas. 1998. High-latitude pelmatozoan-bryozoan mud-mounds from the Late Ordovician northern Gondwana platform. Geological Journal 33:121-140 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 80725: authorized by Wolfgang Kiessling, entered by Uta Merkel on 06.05.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

Cystoidea
  -
Cystoidea indet. von Buch 1846
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
Conodonta
  -
Brachiopoda
  -
Brachiopoda indet. Cuvier 1805
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
Cephalopoda
  -
Cephalopoda indet. Cuvier 1797
Gastropoda
  -
Gastropoda indet. Cuvier 1795 snail
Trilobita
 Corynexochida - Styginidae
Cekovia perplexa trilobite
subsp. perplexa
Alceste rugosa trilobite
 Corynexochida - Illaenidae
"Thaleops inflata" = Amphoriops inflata Hammann 1992 trilobite
 Proetida - Rorringtoniidae
Rorringtonia lenis Owens and Hammann 1990 trilobite
Rorringtonia cf. lenis Owens and Hammann 1990 trilobite
 Proetida - Scharyiidae
Panarchaeogonus sp. Oepik 1937 trilobite
 Proetida - Aulacopleuridae
Harpidella sp. M'Coy 1849 trilobite
 Proetida - Brachymetopidae
Radnoria carlsi Owens and Hammann 1990 trilobite
 Phacopida - Pliomeridae
Ovalocephalus cf. tetrasulcatus Kielan 1960 trilobite
 Phacopida - Cheiruridae
  - Isocolidae
 Lichida - Lichidae
Lichas cf. laciniatus Wahlenberg 1818 trilobite
Dicranopeltis polytoma Angelin 1854 trilobite
 Odontopleurida - Odontopleuridae
unclassified
  -
Porifera indet. Grant 1836