- Source: Bloyd Formation
The Bloyd Formation, or Bloyd Shale, is a geologic formation in Arkansas. It preserves fossils dating back to the Carboniferous period.
Stratigraphy
The Bloyd Formation conformably overlies the Hale Formation and unconformably underlies the Atoka Formation. Five formal and one informal members are recognized in the Bloyd Formation (in stratigraphic order):
Kessler Limestone Member
Dye Shale Member
Parthenon Sandstone Member (also known as the "middle Bloyd sandstone")
Woolsey Member
Baldwin coal (an informal unit at the top of the Woolsey Member)
Brentwood Limestone Member
In the eastern parts of the Ozarks in Arkansas, the Bloyd Formation becomes undifferentiated with the underlying Hale Formation and is called the Witts Springs Formation.
Paleontology
= Brachiopods
== Bryozoans
== Cephalopods
== Conodonts
== Crinoids
== Flora
=Archaeolithophyllum
A. missouiense
Cuneiphycus
C. aliquantulus
Donezella
Eflugelia
Girvanella
G. minuta
Paraepimastopora
Stachedoides
S. spissa
= Foraminifera
== Ostracods
=Amphissites
A. confluens
A. nodosus
A. rothi
Bairdiolites
Hollinella
H. bassleri
Kegelites
Kirkbya
K. bendensis
K. jolliffana
Pseudoparaparchites
= Sponges
=Haplistion
H. sphaericum
Steioderma
S. hadra
Virgaspongia
V. ichnata
= Trace Fossils
=Conostichus
C. arkansanus
= Incertae sedis
=Asphaltina
A. cordillerensis
Clacisphaera
C. laevis
Nostocites
Osagia
Proninella
P. strigosa
See also
List of fossiliferous stratigraphic units in Arkansas
Paleontology in Arkansas
References
Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
Kata Kunci Pencarian:
- Bloyd Formation
- Ctenacanthus
- Bloyd Shale
- Hale Formation
- Morrow Group
- List of fossiliferous stratigraphic units in Oklahoma
- Atoka Formation
- List of fossiliferous stratigraphic units in Arkansas
- Eobaphetes
- Ozarks
