Allon (Cretaceous of the United States)

Where: Crawford County, Georgia (32.6° N, 84.0° W: paleocoordinates 32.3° N, 53.1° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Buffalo Creek Member (Gailard Formation), Late/Upper Santonian (85.8 - 83.5 Ma)

• Age is based on the presence of terrestrial palynomorphs that are considered to be biostratigraphically equivalent to those in marine units assigned to the Late Santonian based on calcareous nannofossil zone CC17 (R. Christopher unpublished data). Herendeen et al. 1999: 410.

• bed-level stratigraphic resolution

Environment/lithology: fine channel fill; unlithified claystone and unlithified sandstone

• Fossil preserved in clay lens within cross-bedded sands

Size classes: macrofossils, mesofossils, microfossils

Preservation: adpression, charcoalification, original carbon, original sporopollenin

Collection methods: bulk, sieve,

Primary reference: P. S. Herendeen, S. Magallon-Puebla, R. Lupia, P. R. Crane, and J. Kobylinska. 1999. A prelimimary conspectus of the Allon flora from the Late Cretaceous (Late Santonian) of central Georgia, U.S.A. Annals of the Missouri Botanical Garden 89(2):407-471 [H. Wang/H. Wang/H. Wang]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 28320: authorized by Hongshan Wang, entered by Hongshan Wang on 07.02.2003, edited by Monica Arakaki

Creative Commons license: CC BY (attribution)

Taxonomic list

• Does not include the palynoflora.
unclassified
  -
Eopolytrichum antiquum n. gen. n. sp.3
Campylopodium allonense n. gen. n. sp.4
Pteridophyte "Type 1"
"Fern leaf Type 1"
Pteridophyte "Type 2"
"Fern leaf Type 2"
Caryanthus sp.8
"cf. Juglandales/Myricales (family incertae sedis)"
Bedellia pusilla n. gen. n. sp.8
"cf. Betulaceae"
Spermatophyta "Miscelaneous axes with attached leaves/bracts, type 1"
"Miscelaneous axes with attached leaves/bracts, type 1"
Spermatophyta "Miscelaneous axes with attached leaves/bracts, type 2"
"Miscelaneous axes with attached leaves/bracts, type 2"
Spermatophyta "Axis with pinnate bracts"
"Axis with pinnate bracts"
Spermatophyta "Miscellaneous seed type 1"
"Miscellaneous seed type 1"
Spermatophyta "Miscellaneous seed type 2"
"Miscellaneous seed type 2"
Spermatophyta "Miscellaneous seed type 3"
"Miscellaneous seed type 3"
Angiospermae
  -
Angiospermae "Slender epigynous flower"
"Slender epigynous flower"
Angiospermae "Epigynous flower with spherical ovary"
"Epigynous flower with spherical ovary"
Angiospermae "Flower with very broad perianth parts and coarse fimbriate trichomes"
"Flower with very broad perianth parts and coarse fimbriate trichomes"
cf. Angiospermae "Bicarpellate superior fruit"
"Bicarpellate superior fruit"
Angiospermae "Epigynous flower with rounded sepals"
"Epigynous flower with rounded sepals"
Angiospermae "Immature bicarpellate fruit"
"Immature bicarpellate fruit"
cf. Angiospermae "Inflorescence with trimerous flowers"
"Inflorescence with trimerous flowers"
Angiospermae "Strobiloid spicate axis"
"Strobiloid spicate axis"
Angiospermae "Spherical capitate inflorescence"
"Spherical capitate inflorescence"
Angiospermae "Dicot leaf type 1"
"Dicot leaf type 1"
Angiospermae "Dicot leaf type 2"
"Dicot leaf type 2"
Angiospermae "Dicot leaf type 3"
"Dicot leaf type 3"
Angiospermae "Dicot leaf type 4"
"Dicot leaf type 4"
Angiospermae "Dicot leaf type 5"
"Dicot leaf type 5"
Angiospermae "Dicot leaf type 6"
"Dicot leaf type 6"
Angiospermae "Dicot leaf type 7"
"Dicot leaf type 7"
Angiospermae "Dicot leaf type 8"
"Dicot leaf type 8"
"Monocotyledonae indet." = Monocotyledoneae
Tricarpellate flower
"Monocotyledonae "Foliage Type 1"" = Monocotyledoneae
"Monocot leaf Type 1"
"Monocotyledonae "Foliage Type 2"" = Monocotyledoneae
"Monocot leaf Type 2"
Dicotyledoneae
 Ericales - Actinidiaceae
Parasaurauia allonensis n. gen. n. sp.2
Parasaurauia allonensis n. gen. n. sp.2 Keller et al. 1996
Angiospermae
 Rosids -
Fagales "Normapolles flower Type A"8 Engler 1892
"Normapolles flower Type A"
 Fagales - Fagaceae
Protofagacea allonensis n. gen. n. sp. Herendeen et al. 1995
"Fagaceae sensu lato"
Protofagacea allonensis1 Herendeen et al. 1995
 Magnoliid -
cf. Detrusandra sp. Crepet and Nixon 1998
 Laurales - Lauraceae
Mauldinia sp. Drinnan et al. 1990 laurel
 Pandanales - Triuridaceae
cf. Triuridaceae indet. Gardner 1843
Trimerous staminate flower
 Eudicots -
Eudicot "Pentamerous flower with inferior ovary" Doyle and Hotton 1991
"Pentamerous flower with inferior ovary"
aff. Eudicot "Pentamerous flower with semi-inferior ovary" Doyle and Hotton 1991
"Pentamerous flower with semi-inferior ovary"
Eudicot "Flower with lobed petals" Doyle and Hotton 1991
"Flower with lobed petals"
Eudicot "Trimerous flower with numerous coarse trichomes" Doyle and Hotton 1991
"Trimerous flower with numerous coarse trichomes"
Eudicot "Capitate inflorescence of pentamerous flowers" Doyle and Hotton 1991
"Capitate inflorescence with pentamerous flowers"
Eudicot "Flower with pentamerous perianth and trimerous gynoecium" Doyle and Hotton 1991
"Flower with pentamerous perianth and trimerous gynoecium"
Eudicot "Flower with pentamerous calyx composed of thick valvate sepals" Doyle and Hotton 1991
"Flower with pentamerous calyx composed of thick valvate sepals"
Eudicot "Pentamerous flower with bracteoles" Doyle and Hotton 1991
"Pentamerous flower with bracteoles"
 Saxifragales - Hamamelidaceae
Allonia decandra n. gen. n. sp.7, Androdecidua endressii n. gen. n. sp.6
Allonia decandra n. gen. n. sp.7 witch-hazel
Androdecidua endressii n. gen. n. sp.6 Magallon et al. 2001 witch-hazel
"cf. Hamamelidaceae. Flower with apically connate stamen connectives
 Saxifragales - Altingiaceae
cf. Altingioideae indet. Reinsh 1890
"cf. subfamily Altingioideae, Hamamelidaceae. Capitate inflorescece"
 Eudicots -
Noferinia fusicarpa n. gen. n. sp.5
Noferinia fusicarpa n. gen. n. sp.5
"Flower with spindle-shaped inferior ovary"
 Ericales - Ericales
cf. Ericales "Flower with stellate trichomes, Type 1"
"cf. Ericales. Flower with stellate trichomes, Type 1"
cf. Ericales "Flower with stellate trichomes, Type 2"
"cf. Ericales. Flower with stellate trichomes, Type 2"
cf. Ericales "Fruits bearing large peltate trichomes"
"Fruits bearing large peltate trichomes"
 Coniferales -
Coniferales "Foliage Type 1"
"Conifer foliage Type 1 (cf. Brachyphyllum Brongniart)
Coniferales "Foliage Type 2"
"Conifer foliage Type 2"
Coniferales "Foliage Type 4"
"Conifer foliage Type 4 (cf. Brachyphyllum Brongniart)"
Coniferales indet.
Conifer pollen cone and dispersed cone scales
Pinopsida
 Pinales - Taxodiaceae
cf. Taxodiaceae "Foliage Type 3" Saporta 1865
"Conifer foliage Type 3"
Polypodiopsida
  - Gleicheniaceae
cf. Boodlepteris sp. Gandolfo et al. 1997
unclassified
  -
Tracheophyta "Root with nodules?"
"Root with nodules?"