Highgate Fm., lower part, Tremadocian: Tremadoc, Vermont
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Pterobranchia
- Dendroidea
- Acanthograptidae
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Dictyonema sp.
Hall 1851
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Gymnolaemata
- Ctenostomata
- Vinellidae
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Heteronema sp.
Ulrich and Bassler 1904
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| "unrecognizable" | ||||||||||
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Rhynchonellata
- Pentamerida
- Huenellidae
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Glyptotrophia sp.
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Rhynchonellata
- Pentamerida
- Clarkellidae
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Syntrophina sp.
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Rhynchonellata
- Orthida
- Eoorthidae
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Apheoorthis sp.
Ulrich and Cooper 1936
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Rhynchonellata
- Orthida
- Orthidae
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Orthis sp.
Dalman 1828
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Rhynchonellata
- Orthida
- Archaeorthidae
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Archaeorthis sp.
Schuchert and Cooper 1931
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Polychaeta
- Serpulimorpha
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Serpulites sp.
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Gastropoda
- Sinuopeidae
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Dirhachopea sp.
Ulrich et al. 1931
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Trilobita
- Ptychopariida
- Norwoodiidae
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Hardyoides sp.
Kobayashi 1938
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Trilobita
- Asaphida
- Nileidae
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Symphysurina sp.
Ulrich 1924
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Trilobita
- Corynexochida
- Missisquoiidae
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Missisquoia sp.
Shaw 1951
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Trilobita
- Olenida
- Olenidae
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Highgatella sp.
Shaw 1955
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Parabolinella sp.
Brögger 1882
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Plicatolina sp.
Shaw 1951
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Agnostida
- Metagnostidae
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Geragnostus sp.
Howell 1935
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Agnostida
- Diplagnostidae
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Pseudagnostus sp.
Jaekel 1909
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Litagnostus sp.
Rasetti 1944
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Agnostida
- Agnostidae
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Homagnostus sp.
Howell 1935
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Vermont |
| Coordinates: | 44.5° North, 73.2° West (view map) | ||
| Paleocoordinates: | 31.2° South, 66.5° West | ||
| Basis of coordinate: | based on political unit | ||
| Geographic resolution: | basin |
Time
| 10 m.y. bin: | Cambrian-Ordovician | ||
| *Period: | Ordovician | *Epoch: | Tremadoc |
| Key time interval: | Tremadoc | ||
| Age range of interval: | 485 - 477.7 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Highgate | ||||
| Stratigraphy comments: "Tremadocian" |
Lithology and environment
| Primary lithology: | black "limestone" |
| Environment: | marine indet. |
| Geology comments: "dolomitic congl and black, xtaline fossiliferous ls., thin-bedded (1/4-1"); slate above- some slumped ls? BA3-4, BA4 [circled] 5? geosynclinal." | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | general faunal/floral analysis |
| Taxonomic list comments:"A.B.Shaw, 1958. Stratigraphy and structure of the St. Albans Area, northwestern Vermont. GSA Bull. 69:519-568" | |
Metadata
| Database number: | 277 | ||
| Authorizer: | J. Sepkoski | Enterer: | M. Sommers |
| Modifier: | J. Ju | Research group: | marine invertebrate |
| Created: | 1998-11-20 10:07:18 | Last modified: | 2016-12-29 01:18:07 |
| Access level: | the public | Released: | 1998-11-20 10:07:18 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 60871. | A. B. Shaw. 1958. Stratigraphy and structure of the St. Albans Area, northwestern Vermont. Geological Society America Bulletin 69:519-568 [M. Uhen/M. Uhen] |