Garra Formation Brachiopods 1, Wellington Area: Pragian, Australia

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Iridstrophia sp.
Rhynchonellata - Pentamerida - Gypidulidae
Sieberella sp. Oehlert 1887
Gypidula cf. pelagica
Gypidula sp. Hall 1867
Rhynchonellata - Protorthida - Skenidiidae
Skenidioides aff. variabilis
Rhynchonellata - Orthida - Rhipidomellidae
Dalejina ovata n. sp.
Rhynchonellata - Orthida - Mystrophoridae
Mystrophora garraensis n. sp.
Rhynchonellata - Orthida - Dalmanellidae
Molongella wellingtonensis n. sp.
Molongella mawsoni n. sp.
Prokopia hillae
Isorthis (Tyersella) sp. ()
original and current combination Tyersella
Isorthis (Arcualla) minuta n. sp.
Isorthis (Protocortezorthis) cf. festiva Philip 1962
Isorthis (Protocortezorthis) impressiva n. sp.
Isorthis (Protocortezorthis) rotunda n. sp.
Rhynchonellata - Orthida - Schizophoriidae
Schizophoria aff. fragilis
Schizophoria latisulcata n. sp.
Schizophoria fecunda n. sp.
Schizophoria sp. King 1850
Rhynchonellata - Orthida - Draboviidae
Salopina cf. submurifer
Muriferella cf. punctata
Rhynchonellata - Orthida - Hesperorthidae
Ptychopleurella cf. cymbella
Ptychopleurella forticostata
Dolerorthis cf. borealis
Dolerorthis ornata n. sp.
Dolerorthis sp. Schuchert and Cooper 1931
Rhynchonellata - Spiriferida
? Boucotia australis
Strophomenata - Strophomenida - Chonetidae
? Devonochonetes sp. Muir-Wood 1962
sp. 1
Strophomenata - Strophomenida
Asymmetrochonetes planata n. sp.
Strophomenata - Strophomenida - Leptostrophiidae
Leptostrophia (Rhytistrophia) leptocostata n. sp.
Strophomenata - Strophomenida - Douvillinidae
Cymostrophia magnifica n. sp.
Nadiastrophia superba Talent 1963
Strophomenata - Strophomenida - Strophonellidae
? Strophoprion cf. podolica
synonym of Strophonella
Strophomenata - Strophomenida - Rafinesquinidae
Lepidoleptaena cf. lepidula Barrande 1879
Notoleptaena cf. linguifera Gill 1951
Strophomenata - Strophomenida - Sowerbyellidae
Plectodonta bipartita (Chapman 1913)
Strophomenata - Orthotetida - Areostrophiidae
Eoschuchertella quadrata n. sp.
Aesopomum sp. Havlicek 1965
see common names

Geography
Country:Australia State/province:New South Wales
Coordinates: 32.6° South, 149.0° East (view map)
Paleocoordinates:9.0° South, 174.0° East
Basis of coordinate:based on nearby landmark
Geographic resolution:local area
Time
Period:Devonian Epoch:Early/Lower Devonian
Stage:Pragian 10 m.y. bin:Devonian 1
Key time interval:Pragian
Age range of interval:410.80000 - 407.60000 m.y. ago
Stratigraphy
Formation:Garra
Stratigraphic resolution:formation
Stratigraphy comments: Authors interpret the formation as spanning mid and late Lochkovian to Pragian, based on conodonts and Brachiopods, with the conclusion that "a mid Lochkovian to Pragian age is reasonable for the lowest two-thirds of the formation." The material here is largely from the middle third. Strusz et al. (1999--PBDB ref.7152) conclude, based on brachiopods, that the material reported here is Pragian. Farrell (1992--PBDB ref. 7169), after studying the Garra in the type area to the south, concludes that the formation is diachronous, being younger here in the Wellington area, mainly Pragian sulcatus Zone, and late Lochkovian in the type area.
Lithology and environment
Primary lithology: grainstone
Secondary lithology: calcareous "shale"
Includes fossils?Y
Lithology description: Lenz and Johnson basically just refer to "pure limestones," from which this material comes Strusz (1965, ref. 7170) mentions a broader suite of lithologies for the formation as a whole, as does Farrell (1992, ref. 7169). These are predominantly calcareous shale and detrital limestone, interspersed with biohermal and biostromal deposits. The detrial limestones include many types, but are mainly calcarenites. In some places there are algal limestones, pellet or oolite calcarenties.
Environment:marine indet.
Geology comments: "The Garra limestones are the product of relatively shallow water deposition; the lower approximately one-third of the formation represents a progressive transgressive sequence, the middle portion is the product of still-sand and gradual infilling, and the upper one-third represents progressive shallowing to supratidal conditions."
Taphonomy
Modes of preservation:body,replaced with silica
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some macrofossils
Reason for describing collection:taxonomic analysis
Collection method comments: Faunal list given by authors in terms of composite section rather than individual sections. Numbers of specimens given for numerous individual collections in terms of meters above base of composite section. All collections reported are from between 500 m and 850 m in the composite section (essentially the middle third). I have combined these.
Taxonomic list comments:Orthida, Strophomenida, and Pentamerida only.
Metadata
Database number:25695
Authorizer:M. Foote Enterer:M. Foote
Modifier:M. Uhen Research group:marine invertebrate
Created:2002-09-23 09:09:13 Last modified:2018-11-15 12:59:53
Access level:the public Released:2002-09-23 09:09:13
Creative Commons license:CC BY
Reference information

Primary reference:
7167. A. C. Lenz and B. D. Johnson. 1985. Brachiopods of the Garra Formation (Lower Devonian), Wellington area, New South Wales, Australia: Orthida, Strophomenida, Pentamerida. Palaeontographica Abteilung A 188(1-3):35-70 [M. Foote/M. Foote/M. Foote]