Late Tremadoc Bioherm at San Juan Fm., Cerro la Silla and Jachal ( of Argentina)

Also known as Reef 2456

Where: Argentina (30.0° S, 69.0° W: paleocoordinates 38.8° S, 128.1° W)

• local area-level geographic resolution

When: San Juan Formation, Tremadoc (486.5 - 477.7 Ma)

• Late Tremadoc section of San Juan

• member-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified, intraclastic, shelly/skeletal wackestone and reef rocks

• massive skeletal and lithoclastic wackestone and packstone bioherms

Collection methods: microbial-sponge-receptaculitid paleoecology

Primary reference: F. Canas and M. Carrera. 1993. Early Ordovician microbial-sponge-receptaculitid bioherms of the Precordillera, Western Argentina. Facies 29:169-178 [A. Miller/P. Novack-Gottshall]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 8704: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 27.08.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• primarily sponges and receptaculitids
Show authors, comments, and common names
Trilobita
 Proetida - Bathyuridae
Peltabellia sp.
Peltabellia sp. Whittington 1953 trilobite
Conodonta
 Prioniodontida - Acodontidae
"Acontiodus sp." = Acodus
"Acontiodus sp." = Acodus Pander 1856 conodont
 Protopanderodontida - Protopanderodontidae
Eucharodus sp., "Glyptoconus sp." = Colaptoconus
Eucharodus sp. Kennedy 1980 conodont
"Glyptoconus sp." = Colaptoconus Kennedy 1994 conodont
 Protopanderodontida - Acanthodontidae
Ulrichodina sp.
Ulrichodina sp. Furnish 1938 conodont
 Protopanderodontida - Drepanoistodontidae
Paroistodus sp.
Paroistodus sp. Lindström 1971 conodont
 Panderodontida - Panderodontidae
Parapanderodus sp.
Parapanderodus sp. Stouge 1984 conodont
Demospongiae
 Lithistida - Streptosolenidae
Hudsonospongia sp.
Hudsonospongia sp. Raymond and Okulitch 1940 demosponge
 Lithistida - Anthaspidellidae
Calycocoelia sp., Archaeoscyphia sp.
Calycocoelia sp. Bassler 1927 demosponge
Archaeoscyphia sp. Hinde 1889 demosponge
Radiocyatha
  - Soanitidae
Calathium sp.
Calathium sp. Billings 1865