Hickory Corners: Aeronian, New York

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Stenolaemata - Cyclostomata - Diploclemidae
Diploclema argutum (Bassler 1906)
Stenolaemata - Cystoporata - Fistuliporidae
Cheilotrypa aff. variolata (Hall 1876)
Stenolaemata - Cystoporata - Xenotrypidae
Hennigopora apta Perry et al. 1960
Stenolaemata - Trepostomida - Monticuliporidae
Homotrypa niagarensis n. sp. Ernst et al. 2019
Stenolaemata - Trepostomata - Halloporidae
Hallopora aff. elegantula (Hall 1851)
original and current combination Callopora elegantula
Leioclema adsuetum n. sp. Bassler 1911
recombined as Hallopora elegantula
Stenolaemata - Phylloporinidae
Chasmatopora foerstei McKinney and Wyse Jackson 2010
Stenolaemata - Cryptostomata - Fenestellidae
Fenestella jupiterensis Bassler 1928
Stenolaemata - Cryptostomata - Arthrostylidae
Moyerella parva n. sp. Ernst et al. 2019
Stenolaemata - Cryptostomata - Ptilodictyidae
Ptilodictya sulcata Billings 1866
Phaenopora multifida (Hall 1883)
Stenolaemata - Cryptostomata - Rhinidictyidae
Trigonodictya sp.
Metadictya sp.
see common names

Geography
Country:United States State/province:New York County:Niagara
Coordinates: 43.2° North, 78.8° West (view map)
Paleocoordinates:23.4° South, 48.6° West
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period:Silurian Epoch:Llandovery
Stage:Aeronian 10 m.y. bin:Silurian 1
Key time interval:Aeronian
Age range of interval:440.80000 - 438.50000 m.y. ago
Stratigraphy
Formation:Reynales Member:Hickory Corners
Stratigraphic resolution:group of beds
Stratigraphy comments: Most material was obtained from loose slabs that can only be from the Hickory Corners Member; these are mainly from above the basal Budd Road phosphatic beds, but the exact horizon could not be determined.

The Reynales Formation has long been known to be of mid-Llandovery and probably Aeronian age (Berry and Boucot, 1970). Recently, Waid and Over (2015) discovered conodonts in the lower Reynales Formation (basal Budd Road phosphate bed of LoDuca and Brett, 1994) from Budd Road about 2.5 km west of Hickory Corners, representing the Pranognathus tenuis Zone (lower to middle Aeronian).
Lithology and environment
Primary lithology:lenticular,grading,shelly/skeletal lithified packstone
Secondary lithology:gray,green lithified "shale"
Includes fossils?Y
Lithology description: The Hickory Corners Member comprises a thin interval of interbedded, sparsely fossiliferous greenish gray shale and fossiliferous wackestones and packstones with minor crinoidal grainstones near the top. Beds are thin and commonly lenticular; some show evidence of grading suggestive of storm processing of skeletal material and silty carbonate muds.
Environment:deep subtidal ramp
Geology comments: A majority of the brachiopods are disarticulated whole valves without much fragmentation, and the bryozoans are partially intact, branched colonies. This evidence suggests a predominantly low-energy setting with frequent storm agitation and an overall low rate of sediment accumulation. However, layers about 30–50 cm above the base of the Hickory Corners yield evidence of rapid redeposition; these include rare obrution beds that enclose complete crinoids buried in thin mud layers (Eckert and Brett, 2001). The diverse fauna and primarily matrix-supported limestones indicate that the Reynales Formation in this locality represents the shallow (30–60 m depth) outer shelf environment of Benthic Assemblage 4 of Brett et al. (1993).
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:surface (float),peel or thin section
Reason for describing collection:taxonomic analysis
Museum repositories:SMF
Metadata
Database number:202121
Authorizer:M. Clapham Enterer:M. Clapham
Research group:marine invertebrate
Created:2019-06-25 00:31:11 Last modified:2019-06-25 00:31:11
Access level:the public Released:2019-06-25 00:31:11
Creative Commons license:CC BY
Reference information

Primary reference:

69207. A. Ernst, C. E. Brett, and M. A. Wilson. 2019. Bryozoan fauna from the Reynales Formation (lower Silurian, Aeronian) of New York, USA. Journal of Paleontology 93:628-657 [M. Clapham/M. Clapham/M. Clapham]