Pisocrinus(P.) gemmiformis-Astraeospongium Assoc., Lego Lst, McCory Lane Roadcut: Wenlock - Ludlow, Tennessee
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Polychaeta
- Phyllodocida
- Lepidocoleidae
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Lepidocoleus sp.
Faber 1886
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Polychaeta
- Sabellida
- Serpulidae
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Spirorbis sp.
Daudin 1800
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unclassified
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Mollusca indet.
Linnaeus 1758
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| progalerinid | ||||||||||
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Tentaculitida
- Cornulitidae
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Cornulites sp.
Schlotheim 1820
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unclassified
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Bryozoa indet.
Ehrenberg 1831
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Rhynchonellata
- Rhynchonellida
- Rhynchotrematidae
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Stegerhynchus sp.
(Foerste 1909)
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| original and current combination Rhynchonella (Stegerhynchus) | ||||||||||
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Rhynchonellata
- Protorthida
- Skenidiidae
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Skenidioides sp.
Schuchert and Cooper 1931
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Rhynchonellata
- Spiriferida
- Delthyrididae
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Howellella sp.
Kozlowski 1946
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Rhynchonellata
- Spiriferida
- Cyrtiidae
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Striispirifer sp.
Cooper and Muir-Wood 1951
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Rhynchonellata
- Orthida
- Dicoelosiidae
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Dicoelosia sp.
King 1850
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Rhynchonellata
- Orthida
- Dalmanellidae
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Isorthis sp.
Kozlowski 1929
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Resserella sp.
Bancroft 1928
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Rhynchonellata
- Athyridida
- Nucleospiridae
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Nucleospira sp.
Hall 1859
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Rhynchonellata
- Athyridida
- Meristellidae
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Meristina sp.
Hall 1867
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Trilobita
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Trilobita indet.
Walch 1771
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Thecostraca
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Cirripedia indet.
Rafinesque 1816
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Ostracoda
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Ostracoda indet.
Latreille 1802
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Stylophora
- Mitrata
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Mitrata indet.
Jaekel 1918
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Crinoidea
- Sagenocrinida
- Lecanocrinidae
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Lecanocrinus cf. pusillus
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Crinoidea
- Calceocrinida
- Calceocrinidae
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Eohalysiocrinus cf. stigmatus
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Crinoidea
- Pisocrinida
- Pisocrinidae
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Pisocrinus (Pisocrinus) gemmiformis
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Parapisocrinus quinquelobus
Ausich and Copper 2010
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Echinoidea
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Echinoidea indet.
(Leske 1778)
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Asteroidea
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Asteroidea indet.
de Blainville 1830
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| "starfish plate" | ||||||||||
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Cyclocystoidea
- Cyclocystoididae
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Sievertsia sp. n. sp.
Smith and Paul 1982
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Anthozoa
- Rugosa
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Rugosa indet.
Milne-Edwards and Haime 1850
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Anthozoa
- Auloporida
- Auloporidae
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Auloporella indet.
Grubbs 1939
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Heteractinida
- Octactinellida
- Astraeospongiidae
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Astraeospongium spp.
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Tennessee |
| Coordinates: | 38.1° North, 87.0° West (view map) | ||
| Paleocoordinates: | 28.7° South, 52.7° West | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | outcrop |
Stratigraphy
| Formation: | Wayne | Member: | Lego Limestone | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Lego Limestone Member, Wayne Formation: top 2 m, mostly from shaley limestone unit 3 cm thick near top of unit. Kockelella amsdeni Zone-K. variabilis Zone | |||||
Lithology and environment
| Primary lithology: | gray,red or brown calcareous "shale" | ||
| Secondary lithology: | argillaceous "limestone" | ||
| Includes fossils? | Y | ||
| Includes fossils? | Y | ||
| Lithology description: "The most frequent lithology is a calcareous brownish-gray to reddish shale, often intercalated with thin beds of similarly colored shaley limestone.. In other occurrences the terrigenous component is definitely subordinate. Skeletal debris is often sparese..." | |||
| Environment: | deep subtidal ramp | Tectonic setting: | foreland basin |
| Geology comments: "Crinods and brachiopods may be preserved intact...but most frequently are diarticulated...root systems uncommon...little evidence of current winnowing or sorting, but the concentratioon of whole fossils in particular units may indicate either rare sstorm disturbance or a storm-caused sudden increase in sed. rate. Detrital limonite and partly oxidized glauconite grains up to sand size are common. Burrows locally common in some horizons....BA 4-5, somewhat restricted environment.."
SEP environmental call based on given info | |||
Taphonomy
Collection methods and comments
| Reason for describing collection: | paleoecologic analysis |
| Collection method comments: Taxa in table 45.46, which gives abundances. | |
Metadata
| Database number: | 26817 | ||
| Authorizer: | M. Foote | Enterer: | M. Foote |
| Modifier: | S. Peters | Research group: | marine invertebrate |
| Created: | 2002-11-04 11:18:11 | Last modified: | 2003-05-05 15:40:37 |
| Access level: | the public | Released: | 2002-11-04 11:18:11 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 4379. | T. J. Frest, C. E. Brett, and B. J. Witzke. 1999. Caradocian-Gedinnian echinoderm associations of Central and Eastern North America. Paleocommunities--a case study from the Silurian and Lower Devonian 638-783 [M. Foote/K. Koverman/P. Wagner] |