Regatta Point Eocene (Eocene of Australia)

Where: Tasmania, Australia (42.2° S, 145.3° E: paleocoordinates 64.1° S, 152.5° E)

• coordinate stated in text

When: Malvacipollis diversus zone pollen zone, Early/Lower Eocene (55.8 - 48.6 Ma)

• The Regatta Point mudstone was placed in the Malvacipollis diversus zone, based on the presence of Intratriporopollenites notabilis, Liliacidites lanceolatus, Polycolpites esobalteus, Proteacidites grandis, P. leightonii and Spinizonocolpites priminatus, which have their first appearance in the M. diversus zone. None of the species characteristic of the more recent Proteacidites asperopolus zone were present. Therefore the Regatta Point mudstone is of Early Eocene age.

Environment/lithology: fluvial-deltaic; silty, carbonaceous mudstone and sandstone

• It may have been deposited as a tidal bar at the mouth of an estuary (Pole & Macphail, 1996). Mangroves (Pole, 2007).

Size class: macrofossils

Preservation: adpression

Collection methods: chemical

Primary reference: A. J. Bigwood and R. S. Hill. 1985. Tertiary Araucarian Macrofossils from Tasmania. Australian Journal of Botany 33(6):645-656 [C. Jaramillo/C. Jaramillo]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 166977: authorized by Carlos Jaramillo, entered by Carlos Jaramillo on 05.03.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Monocot "indet. JBC"5, Angiosperm "indet. JBB"5, Angiosperm "indet. GCF"5, Angiosperm "indet. JJH"5, Angiosperm "indet. JAE"5, Angiosperm "indet. JEE"5, Angiosperm "indet. JJF"5, Angiosperm "indet. JJA"5, Monocot "indet. GCE"5, Angiosperm "indet. JEA"5, Angiosperm "indet. JJE"5
Monocot "indet. JBC"5
Parataxa CUT-Mo-JBC
Angiosperm "indet. JBB"5
Group A, Parataxa CUT-Z-JBB
Angiosperm "indet. GCF"5
Group A, Parataxa CUT-Z-GCF
Angiosperm "indet. JJH"5
Group D, Parataxa CUT-Z-JJH
Angiosperm "indet. JAE"5
Group D, Parataxa CUT-Z-JAE
Angiosperm "indet. JEE"5
Group D, Parataxa CUT-Z-JEE
Angiosperm "indet. JJF"5
Group D, Parataxa CUT-Z-JJF
Angiosperm "indet. JJA"5
Group B, Parataxa CUT-Z-JJA
Monocot "indet. GCE"5
Parataxa CUT-Mo-GCE
Angiosperm "indet. JEA"5
Parataxa CUT-Z-JEA
Angiosperm "indet. JJE"5
Group B, Parataxa CUT-Z-JJE
Equisetopsida
 Pinidae - Pinidae
Araucarioides sp.5, Araucarioides sinuosa n. sp., Araucarioides linearis n. gen. n. sp., Araucaria "sp. A"5, Araucaria readiae n. sp.2
Araucarioides sp.5 Bigwood and Hill 1985
Araucarioides sinuosa n. sp. Bigwood and Hill 1985
Araucarioides linearis n. gen. n. sp. Bigwood and Hill 1985
Araucaria "sp. A"5 de Jussieu 1789
Araucaria readiae n. sp.2 Hill and Bigwood 1987
Cycadopsida
 Cycadales - Zamiaceae
Bowenia eocenica5
Bowenia eocenica5 Hill 1978 cycads
 Gnetales - Gnetaceae
Gnetaceae "indet. GDB"5
Gnetaceae "indet. GDB"5 Lindley 1834 cycads
Parataxa CUT-Z-GDB
Angiospermae
 Malpighiales - Rhizophoraceae
Rhizophoraceae "indet. JAG"5
Rhizophoraceae "indet. JAG"5 Persoon 1807
Parataxa CUT-Z-JAG
 Fagales - Casuarinaceae
Gymnostoma sp.5
Gymnostoma sp.5 Johnson 1980
 Oxalidales - Cunoniaceae
Eucryphia microstoma n. sp.1
Eucryphia microstoma n. sp.1 Hill 1991
 Canellales - Winteraceae
Winteraceae "indet. DDD"5
Winteraceae "indet. DDD"5 Lindley 1830 magnoliids
Parataxa CUT-Z-DDD
 Proteales - Proteaceae
Proteaceae "indet. EJG"5, Proteaceae "indet. EJI"5
Proteaceae "indet. EJG"5 de Jussieu 1789
Parataxa CUT-P-EJG
Proteaceae "indet. EJI"5 de Jussieu 1789
Parataxa CUT-P-EJI
 Aquifoliales - Aquifoliaceae
Aquifoliaceae "indet. JJB"5, Aquifoliaceae "indet. ACB"5
Aquifoliaceae "indet. JJB"5 Richard 1820
Parataxa CUT-Z-JJB
Aquifoliaceae "indet. ACB"5 Richard 1820
Parataxa CUT-Z-ACB
 Laurales - Lauraceae
Lauraceae "indet. DCG"5, Lauraceae "indet. DCI"5, Lauraceae "indet. DDJ"5, Lauraceae "indet. JBA"5, Lauraceae "indet. DDE"5, Lauraceae "indet. GCG"5
Lauraceae "indet. DCG"5 Jussieu 1789 laurel
Parataxa CUT-L-DCG
Lauraceae "indet. DCI"5 Jussieu 1789 laurel
Parataxa CUT-L-DCI
Lauraceae "indet. DDJ"5 Jussieu 1789 laurel
Possible Endiandra sp.
Lauraceae "indet. JBA"5 Jussieu 1789 laurel
Parataxa CUT-L-JBA
Lauraceae "indet. DDE"5 Jussieu 1789 laurel
Parataxa CUT-Z-DDE
Lauraceae "indet. GCG"5 Jussieu 1789 laurel
Parataxa CUT-L-GCG
 Coniferales - Cupressaceae
Libocedrus microformis n. sp.4
Libocedrus microformis n. sp.4 Paull and Hill 2009 cypress
 Coniferales - Podocarpaceae
Podocarpaceae "sp. G"5, Podocarpaceae "sp. C"5, Podocarpaceae "sp. B"5, Podocarpaceae "sp. F"5, Prumnopitys sp.5, Dacrycarpus linifolius3, Dacrycarpus mucronatus3, Acmopyle glabra n. sp.3
Podocarpaceae "sp. G"5 Endlicher 1847 podocarp
Podocarpaceae "sp. C"5 Endlicher 1847 podocarp
Podocarpaceae "sp. B"5 Endlicher 1847 podocarp
Podocarpaceae "sp. F"5 Endlicher 1847 podocarp
Prumnopitys sp.5 Philippi 1860 podocarp
Dacrycarpus linifolius3 Wells and Hill 1989 podocarp
Dacrycarpus mucronatus3 Wells and Hill 1989 podocarp
Acmopyle glabra n. sp.3 Hill and Carpenter 1991 podocarp
1Hill 1991; 2Hill and Bigwood 1987; 3Hill and Carpenter 1991; 4Paull and Hill 2009; 5Pole 2007