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Benjamin Limestone, Tasmania, Australia

Formation	Benjamin Limestone
Member(s)	Lords Siltstone Upper Limestone
Age:	452 - 450 Ma Late/Upper Ordovician
Interval	Onnian
Lithology	limestone
Number of Collections	1
Number of Occurrences	15

Recorded Sample Locations

Location	Region	Stratigraphic Name
Florentine Synclinorium	West Coast municipality, Tasmania, Australia	Benjamin Limestone - Lords Siltstone
Top of Benjamin Limestone	Derwent Valley municipality, Tasmania, Australia	Benjamin Limestone
Near Florentine River	Derwent Valley municipality, Tasmania, Australia	Benjamin Limestone - Lords Siltstone
Adamsfield Track	Derwent Valley municipality, Tasmania, Australia	Benjamin Limestone - Upper Limestone
near Eden Creek	Central Highlands municipality, Tasmania, Australia	Benjamin Limestone - Upper Limestone

Associated Units

Stratigraphic Name	Age	Lithology	Occurrence Records
Benjamin Limestone - Lords Siltstone	456 - 450 Ma Late/Upper Ordovician	siltstone	43
Benjamin Limestone - Upper Limestone	456 - 450 Ma Late/Upper Ordovician	limestone	2
Florentine Valley Limestone	485 - 477 Ma Paleozoic	sandstone/siltstone	33
Karmberg	467 - 458 Ma Middle Ordovician	limestone/siltstone, "limestone"	20
Westfield Beds	456 - 450 Ma Late/Upper Ordovician	siltstone	17
Westfield Sandstone	443 - 441 Ma Silurian	sandstone/siltstone, sandstone, siltstone	70
Gordon - Benjamin Limestone - Upper	456 - 450 Ma Late/Upper Ordovician	dolomite/lime mudstone	35

Recorded Fossils

Accepted Name	Type	Hierarchy	Age
Eoleperditia sp. genus	6	Animalia : Arthropoda : Ostracoda : Leperditiidae : *Eoleperditia*	460.9 - 449.5 Ma Ordovician
Beyrichiidae family	5	Animalia : Arthropoda : Ostracoda : Palaeocopida : Beyrichiidae	460.9 - 449.5 Ma Ordovician
Asaphellus sp. genus	6	Animalia : Arthropoda : Trilobita : Asaphida : Asaphidae : *Asaphellus*	460.9 - 449.5 Ma Ordovician
Homotelus sp. genus	6	Animalia : Arthropoda : Trilobita : Asaphida : Asaphidae : *Homotelus*	460.9 - 449.5 Ma Ordovician
Ampyx sp. genus	6	Animalia : Arthropoda : Trilobita : Asaphida : Raphiophoridae : *Ampyx*	460.9 - 449.5 Ma Ordovician
Bumastus sp. genus	6	Animalia : Arthropoda : Trilobita : Corynexochida : Illaenidae : *Bumastus*	460.9 - 449.5 Ma Ordovician
Eokosovopeltis grandicurvatus species	7	Animalia : Arthropoda : Trilobita : Corynexochida : Styginidae : Eokosovopeltis : *Eokosovopeltis grandicurvatus*	456.1 - 449.5 Ma Late/Upper Ordovician
Amphilichas sp. genus	6	Animalia : Arthropoda : Trilobita : Lichida : Lichidae : *Amphilichas*	460.9 - 449.5 Ma Ordovician
Ogygiocaridinae subfamily	5.3	Animalia : Arthropoda : Trilobita : Ogygiocaridinae	460.9 - 449.5 Ma Ordovician
Ectenonotus sp. genus	6	Animalia : Arthropoda : Trilobita : Phacopida : Pliomeridae : *Ectenonotus*	460.9 - 449.5 Ma Ordovician
Pliomerina trisulcata species	7	Animalia : Arthropoda : Trilobita : Phacopida : Pliomeridae : Pliomerina : *Pliomerina trisulcata*	460.9 - 449.5 Ma Ordovician
Orthida order	4	Animalia : Brachiopoda : Rhynchonellata : Orthida	460.9 - 449.5 Ma Ordovician
Orthidae family	5	Animalia : Brachiopoda : Rhynchonellata : Orthida : Orthidae	460.9 - 449.5 Ma Ordovician
Dinorthis sp. genus	6	Animalia : Brachiopoda : Rhynchonellata : Orthida : Plaesiomyidae : *Dinorthis*	452 - 449.5 Ma Late/Upper Ordovician
Rhynchonellidae family	5	Animalia : Brachiopoda : Rhynchonellata : Rhynchonellida : Rhynchonellidae	460.9 - 449.5 Ma Ordovician
Strophomena sp. genus	6	Animalia : Brachiopoda : Strophomenata : Strophomenida : Strophomenidae : *Strophomena*	460.9 - 449.5 Ma Ordovician
Sowerbyites sp. genus	6	Animalia : Brachiopoda : Strophomenata : Strophomenida : Syndielasmatidae : *Sowerbyites*	460.9 - 449.5 Ma Ordovician
Stictopora sp. genus	6	Animalia : Bryozoa : Stenolaemata : Cryptostomida : Ptilodictyidae : *Stictopora*	460.9 - 449.5 Ma Ordovician
Amplexopora sp. genus	6	Animalia : Bryozoa : Stenolaemata : Trepostomatida : Amplexoporidae : *Amplexopora*	460.9 - 449.5 Ma Ordovician
Phragmodus sp. genus	6	Animalia : Chordata : Conodonta : *Phragmodus*	452 - 449.5 Ma Late/Upper Ordovician
Belodina compressa species	7	Animalia : Chordata : Conodonta : Panderodontida : Panderodontidae : Belodina : *Belodina compressa*	452 - 449.5 Ma Late/Upper Ordovician
Bajgolia sp. genus	6	Animalia : Cnidaria : Anthozoa : Bajgoliidae : *Bajgolia*	460.9 - 449.5 Ma Ordovician
Paleofavosites sp. genus	6	Animalia : Cnidaria : Anthozoa : Favositidae : *Paleofavosites*	452 - 449.5 Ma Late/Upper Ordovician
Acidolites sp. genus	6	Animalia : Cnidaria : Anthozoa : Heliolitidae : *Acidolites*	460.9 - 449.5 Ma Ordovician
Coccoseris sp. genus	6	Animalia : Cnidaria : Anthozoa : Heliolitidae : *Coccoseris*	452 - 449.5 Ma Late/Upper Ordovician
Protaraea sp. genus	6	Animalia : Cnidaria : Anthozoa : Coccoserididae : *Protaraea*	460.9 - 449.5 Ma Ordovician
Catenipora sp. genus	6	Animalia : Cnidaria : Anthozoa : Halysitidae : *Catenipora*	452 - 449.5 Ma Late/Upper Ordovician
Falsicatenipora sp. genus	6	Animalia : Cnidaria : Anthozoa : Halysitidae : *Falsicatenipora*	452 - 449.5 Ma Late/Upper Ordovician
Trochiscolithus sp. genus	6	Animalia : Cnidaria : Anthozoa : Palaeoporitidae : *Trochiscolithus*	460.9 - 449.5 Ma Ordovician
Lichenaria sp. genus	6	Animalia : Cnidaria : Anthozoa : Lichenariidae : *Lichenaria*	460.9 - 449.5 Ma Ordovician
Eofletcheria sp. genus	6	Animalia : Cnidaria : Anthozoa : Auloporidae : *Eofletcheria*	452 - 449.5 Ma Late/Upper Ordovician
Lyopora sp. genus	6	Animalia : Cnidaria : Anthozoa : Syringophyllidae : *Lyopora*	460.9 - 449.5 Ma Ordovician
Nyctopora sp. genus	6	Animalia : Cnidaria : Anthozoa : Syringophyllidae : *Nyctopora*	460.9 - 449.5 Ma Ordovician
Billingsaria sp. genus	6	Animalia : Cnidaria : Anthozoa : Syringophyllidae : *Billingsaria*	460.9 - 449.5 Ma Ordovician
Foerstephyllum sp. genus	6	Animalia : Cnidaria : Anthozoa : Favositidae : *Foerstephyllum*	460.9 - 449.5 Ma Ordovician
Calapoecia sp. genus	6	Animalia : Cnidaria : Anthozoa : Favositidae : *Calapoecia*	452 - 449.5 Ma Late/Upper Ordovician
Cyathophylloides sp. genus	6	Animalia : Cnidaria : Anthozoa : Stauriidae : *Cyathophylloides*	452 - 449.5 Ma Late/Upper Ordovician
Favistina sp. genus	6	Animalia : Cnidaria : Anthozoa : Stauriidae : *Favistina*	452 - 449.5 Ma Late/Upper Ordovician
Palaeophyllum sp. genus	6	Animalia : Cnidaria : Anthozoa : Streptelasmatidae : *Palaeophyllum*	452 - 449.5 Ma Late/Upper Ordovician
Comarocystites sp. genus	6	Animalia : Echinodermata : Paracrinoidea : Comarocystitida : Comarocystitidae : *Comarocystites*	460.9 - 449.5 Ma Ordovician
Ctenodonta sp. genus	6	Animalia : Mollusca : Bivalvia : Solemyida : Ctenodontidae : *Ctenodonta*	460.9 - 449.5 Ma Ordovician
Hecatoceras sp. genus	6	Animalia : Mollusca : Cephalopoda : Westonoceratidae : *Hecatoceras*	460.9 - 449.5 Ma Ordovician
Beloitoceras sp. genus	6	Animalia : Mollusca : Cephalopoda : Oncoceratidae : *Beloitoceras*	452 - 449.5 Ma Late/Upper Ordovician
Anaspyroceras sp. genus	6	Animalia : Mollusca : Cephalopoda : Nautilida : Nautilidae : *Anaspyroceras*	460.9 - 449.5 Ma Ordovician
Gastropoda class	3	Animalia : Mollusca : Gastropoda	460.9 - 449.5 Ma Ordovician
Stromatoporoidea class	3	Animalia : Porifera : Stromatoporoidea	452 - 449.5 Ma Late/Upper Ordovician
Thamnobeatricea sp. genus	6	Animalia : Porifera : Stromatoporoidea : Labechiida : Aulaceratidae : *Thamnobeatricea*	460.9 - 449.5 Ma Ordovician
Rhodophyta phylum	2	Plantae : Rhodophyta	460.9 - 449.5 Ma Ordovician
Tetradium sp. genus	6	Plantae : Tracheophyta : Magnoliopsida : Sapindales : Rutaceae : *Tetradium*	460.9 - 449.5 Ma Ordovician

References

Corbett K. D., Banks M. R. (1974) Ordovician stratigraphy of the Florentine Synclinorium, southwest Tasmania, Papers and Proceedings of the Royal Society of Tasmania 107, 207-238

Banks M. R. (1988) The base of the Silurian System in Tasmania, Bulletin of the British Museum (Natural History) (Geology Series) 43, 191-194

Edgecombe G. D., Banks M. R., et al (1999) Upper Ordovician Phacopida (Trilobita) from Tasmania, Alcheringa 23 4, 235-257 doi:10.1080/03115519908527808

Edgecombe G. D., Banks M. R., et al (2007) Late Ordovician trilobites from Tasmania: Styginidae, Asaphidae and Lichidae, Memoirs of the Association of Australasian Palaeontologists 30, 59-77

Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!