Hanna Creek, sample 1 (HC1), Waynesville Formation, Brookville, IN (Ordovician of the United States)

Also known as Hannah Creek

Where: Indiana (39.6° N, 84.9° W: paleocoordinates 25.2° S, 58.2° W)

• coordinate estimated from map

• hand sample-level geographic resolution

When: Waynesville Formation, Ashgillian (449.5 - 443.7 Ma)

• Middle Richmondian age. Sample #1 collected. Details on stratigraphy and sedimentation (lithology), and additional details of gastropod and bivalve fauna are included from Novack-Gottshall and Miller (2003) [PBDB reference #18186] and field notes.

• bed-level stratigraphic resolution

Environment/lithology: offshore shelf; lithified, burrowed, pyritic, shelly/skeletal claystone and lithified, shelly/skeletal wackestone

• Sequence C5 (from Holland and Patzkowsky, 1996)
• 18 cm thick, thick-bedded, massive claystone ("butter shales") with occasional pyritized burrows (Chondrites, subvertically-oriented with respect to the sediment layer). Claystones predominate section, with occasional wackestone/packstone interbeds. Sample made directly above an Onniella-rich claystone above a thick packstone tempestite; next large limestone bed is 61 cm above this bottom limestone.

Size classes: macrofossils, mesofossils, microfossils

Preservation: cast, mold/impression, adpression, trace, recrystallized, original calcite, original phosphate, original chitin, original carbon, replaced with calcite, replaced with pyrite

Collection methods: bulk, mechanical,

• Bulk collection made in field and weighed, cleaned, prepped, and identified in lab at University of Cincinnati. Sample dimensions are 15732 cubic-cm. 129 specimens counted; 65 individuals estimated (using half of total disarticulated specimens with two parts plus number of articulated/intact specimens). Trepostome bryozoans and fragmented trilobites were counted as estimated percent cover using standard percent cover reference chart.

Primary reference: P. M. Novack-Gottshall. 1999. Comparative geographic and environmental diversity dynamics of gastropods and bivalves during the Ordovician Radiation (M.S. thesis, University of Cincinnati). 1-191 [P. Novack-Gottshall/P. Novack-Gottshall/P. Novack-Gottshall]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 64230: authorized by Phil Novack-Gottshall, entered by Phil Novack-Gottshall on 04.09.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• Representative samples (standards) of species used for taxonomic identification reference are stored at the University of Cincinnati. Many unidentifiable bivalves are not included in taxonomic list.
unclassified
  -
Scolecodonta indet.
1 black scolecodont
Trilobita
 Phacopida - Calymenidae
Flexicalymene meeki Foerste 1910 trilobite
29 unidentified fragments (based on taphonomy in other Waynesville samples, assuming number of individuals approximately equal to 1/3 number of fragments)
 Asaphida - Asaphidae
Isotelus maximus Locke 1838 trilobite
Fragments; 25% by %-specimens; 2 pygidial spines, 4 cephala
Isotelus gigas Dekay 1824 trilobite
4 cephala
Lophophorata
 Tentaculitida - Tentaculitidae
Strophomenata
 Strophomenida - Rafinesquinidae
Rafinesquina ? alternata Conrad 1838
1 disarticulated valve
Rhynchonellata
 Orthida - Dalmanellidae
"Onniella meeki" = Cincinnetina meeki
"Onniella meeki" = Cincinnetina meeki Miller 1875
13 articulated specimens
Lingulata
 Lingulida - Trematidae
 Lingulida - Pseudolingulidae
Pseudolingula sp. Mickwitz 1909
16 fragmented valves
Bivalvia
 Myalinida - Ambonychiidae
Anomalodonta gigantea Miller 1874 clam
1 external mold
Ambonychia sp. Hall 1847 clam
1 external mold
 Ostreida - Pterineidae
"Caritodens demissa" = Pterinea demissa
"Caritodens demissa" = Pterinea demissa Conrad 1842 oyster
1 external mold with traces of recrystallized shell
 Cardiidia - Grammysiidae
Cuneamya miamiensis Hall and Whitfield 1875 clam
1 external mold
 Modiomorphida - Modiomorphidae
Modiolopsis modiolaris Conrad 1838 clam
9 external molds
Cymatonota recta Ulrich 1893 clam
3 external molds, disarticulated
Psiloconcha grandis Ulrich 1894 clam
1 external mold
 Unioni - Lyrodesmatidae
Lyrodesma major Ulrich 1879 clam
1 external and 6 internal molds; 1 specimen appears to be deformed
 Protobranchia - Ctenodontidae
Ctenodonta iphegenia clam
external mold
 Nuculida - Praenuculidae
Palaeoconcha faberi Miller 1889 clam
2 internal molds, disarticulated but associated
 Nuculida - Cardiolariidae
Deceptrix albertina clam
7 internal molds, valves disarticulated
Gastropoda
 Murchisoniina - Eotomariidae
Liospira micula Hall and Whitney 1862 snail
1 shell
Tergomya
 Cyrtonellida - Cyrtolitidae
Cyrtolites ornatus Conrad 1838
1 shell
Cephalopoda
 Nautiloidea -
? Nautiloidea indet. Agassiz 1847 nautiloid
1 deformed (compressed) orthocone
Stenolaemata
 Trepostomata - Halloporidae
Halloporidae indet. Bassler 1911
Fragments