Also known as Hitz Bed, sample 1 (HW1), Upper Whitewater Formation, Madison, IN
Where: Indiana (38.8° N, 85.4° W: paleocoordinates 25.6° S, 59.0° W)
• coordinate estimated from map
• hand sample-level geographic resolution
When: Rhipidognathus symmetricus conodont zone, Hitz Member (Upper Whitewater Formation), Richmondian (449.6 - 445.5 Ma)
• Late 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. C6.
• bed-level stratigraphic resolution
Environment/lithology: lagoonal or restricted shallow subtidal; lithified, pyritic, shelly/skeletal, gray wackestone and lithified, pyritic, shelly/skeletal, gray packstone
Size classes: macrofossils, mesofossils, microfossils
Preservation: cast, mold/impression, recrystallized, original calcite, replaced with calcite, replaced with phosphate
Collection methods: bulk, mechanical,
• Bulk collection made in field and weighed, cleaned, prepped, and identified in lab at University of Cincinnati. Sample weighed 2.7741 Kg. 41 specimens counted; 30 individuals estimated (using half of total disarticulated specimens with two parts plus number of articulated/intact specimens). Taxa counted using percent-coverage not included in this tally. Bryozoans and ostracodes 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 64165: authorized by Phil Novack-Gottshall, entered by Phil Novack-Gottshall on 03.09.2006
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
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Trilobita | |
Flexicalymene meeki Foerste 1910 trilobite 1 intact body (except cephalon) and 1 cephalon, recrystallized
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Deuteropoda | |
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Stenolaemata | |
? Batostomella sp. Bassler 1911 Smooth, thick, branching bryozoan colonies (possibly Batostomella) encrusting most other fossils, especially disarticulated Ambonychia valves
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Halloporidae indet. Bassler 1911 Abundant short, massive, stunted halloporid trepostome bryozoan colonies encrusting most other fossils, especially disarticulated Ambonychia valves
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Lophophorata | |
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Rhynchonellata | |
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"Plaesiomys subquadrata" = Plaesiomys subquadratus
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Strophomenata | |
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Gastropoda | |
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"Raphistomina richmondensis" = Scalites richmondensis
"Raphistomina richmondensis" = Scalites richmondensis Ulrich and Scofield 1897 snail 1 shell, recrystallized
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Cephalopoda | |
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Bivalvia | |
Ambonychia sp. Hall 1847 clam 21 disarticulated valves, all recrystallized or inferred from organic mold made from encrusting bryozoans; one specimen encrusted with Cornulites tube colony
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? Cuneamya miamiensis Hall and Whitfield 1875 clam 1 valve, preserved as sediment cast; possibly Modiolopsis concentrica
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Anthozoa | |
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