A new dinoflagellate species from the Upper Cretaceous of New Zealand - a morphological intermediate between three genera

The new dinoflagellate Isabelidinium marshallii sp. nov. was encountered in the lower to middle Campanian Satyrodinium haumuriense Interval Zone and in the middle to upper Campanian Isabelidinium korojonense Interval Zone, in southern Marlborough, South Island, New Zealand. The new taxon is attributed to Isabelidinium but it also closely resembles species of Alterbidinium and Satyrodinium. Despite its close morphological affiliation to three dinoflagellate genera, I. marshallii represents a discrete population of peridinioid cysts that has a stratigraphically useful range in New Zealand.     

Early Cretaceous (Neocomian) microplankton from the Carpentaria Basin,northern Queensland

The Neocomian upper Helby Beds, basal Rolling Downs Group and Gilbert River Formation of the Carpentaria Basin contain a dinoflagellate sequence divisible into three zonal intervals; the zones represent the oldest continuous marine Cretaceous record for eastern Australia. Zone DK1 (dated latest Jurassic to Berriasian) commences with the first appearance of four species, zone DK2 (dated Valanginian) with that of four or five species, and zone DK3 (dated Hauterivian to Barremian) with that of three species.

Biostratigraphic aspects are discussed of species selected as possible zone marker fossils in so far as they (a) are relatively poorly known, or represent new species, and (b) have no previously published Neocomian record. New combinations are proposed of one acritarch species and six dinoflagellate species. One new acritarch genus and species, Pseudofromea collaris, and four new dinoflagellate species — Canningia crassicingulata, Cleistosphaeridium australe, Cyclonephelium asymmetricum, and Muderongia testudinaria — are proposed and described.     

A palynological investigation of plesiosaur-bearing rocks from the Upper Cretaceous Tahora Formation,Mangahouanga, New Zealand

High-palaeolatitude plesiosaur, mosasaur and, more rarely, dinosaur fossils are well known from the Maungataniwha Sandstone Member of the Tahora Formation in Mangahouanga Stream, Hawkes Bay, New Zealand. A palynological investigation of strata exposed along Mangahouanga Stream and of transported boulders hosting vertebrate fossils reveals well-preserved assemblages dominated by terrestrial pollen and spores but also including marine dinoflagellate cysts in some samples. The palynofacies are strongly dominated by wood fragments including charcoal; one outcrop sample and the sample taken from a boulder hosting plesiosaur vertebrae contain entirely terrestrially derived palynoassemblages, suggesting a freshwater habitat for at least some of the plesiosaurs. The host unit spans the Santonian to lowermost Maastrichtian, while the key pollen taxa Nothofagidites senectus and Tricolpites lilliei, together with the dinocyst Isabelidinium pellucidum and the megaspore Grapnelispora evansii, indicate a late Campanian to early Maastrichtian age for the fossiliferous boulders. The palynoflora indicates a mixed local vegetation dominated by podocarp conifers and angiosperms with a significant tree-fern subcanopy. The presence of taxa with modern temperate distributions, such as Nothofagus (southern beech), Proteaceae and Cyatheaceae (tree-ferns), indicates a mild-temperate climate and lack of severe winter freezing during the latest Cretaceous, providing an ecosystem that most probably made it possible for polar dinosaurs to overwinter in this part of the world.     

A rare,late Paleocene molluscan faunule from the Kings Park Formation,Perth Basin,Western Australia

A shallow marine faunule of eight taxa from the Kings Park Formation of the Perth Basin is the first described Paleocene molluscan assemblage from Western Australia. These species are part of a depauperate suite of macroinvertebrates (molluscs, echinoids and corals) derived from deep, onshore caissons in Perth and are inferred to be late Paleocene in age, based on planktonic foraminiferal biostratigraphy and associated age ranges of the molluscan fauna. Bivalves are Sarepta austranaxa sp. nov. (Sareptidae), Solemya kingsparki sp. nov. (Solemyidae), Periploma vivarirex sp. nov. (Periplomatidae), Parvamussium sp. nov.? (Propeamussiidae), Serripecten? sp. (Pectinidae) and Venericardia (Rotundicardia) petraea Darragh (Carditidae). Gastropods are Levifusus? sp. cf. L.? quadrifunifer Darragh (Buccinidae), and Columbarium rumatoides Darragh (Turbinellidae). Bivalves dominate the fauna in dark, glauconitic siltstone and sandstone facies; gastropods are of relatively poor preservation and low diversity.     

Diatom and dinoflagellate assemblages of the Hawkesbury River,N.S.W., over the last two centuries: evidence for changes in hydrology

Diatom and dinoflagellate cyst analysis of a 77 cm long sediment core from Cowan Creek, Hawkesbury River estuary, N.S.W., revealed changes in the catchment hydrology over the last 266 years. High abundances of the freshwater/brackish diatom genus Cyclotella at the base of the core imply sustained periods of reduced salinity that now no longer occur. Reduction of freshwater flow after approximately circa 1800 (60 cm) has allowed the development of marine planktonic diatoms Thalassiosira spp.,Ditylum brightwellii, Rhizosolenia setigera, Pseudo-nitzschia pungens and Chaetoceros spp. Benthic diatom diversity has remained relatively unchanged. The toxic dinoflagellate Gymnodinium catenatum, although identified in a cyst survey in April 1995, was not found in the sediment cores. Changes in dinoflagellate assemblage are consistent with the effects of increasing urbanisation and eutrophication.     

Prehistoric Whale Bone Technology in Southern New Zealand

Whale bone was used by Māori throughout New Zealand prehistory as an industrial resource for the manufacture of a range of artefacts. However, the selection of bone and the methods used to process it are poorly understood. This paper details the analysis of a southern right whale (Eubalaena australis) bone working floor that was excavated from a fifteenth‐century coastal fishing camp at Kahukura, on the southeast coast of New Zealand. The whale bone working floor assemblage, comprising a large quantity of debitage fragments, was used to reconstruct reduction methods and to determine the products being made at the site. Rib bones were the main element being worked, and were reduced longitudinally using a chipping technique. The intensive bone working assemblage at Kahukura represents the by‐products from primary processing. This stage focused on reducing the bones into workable portions so that they could be easily transported to another location, where they were likely further reduced into artefacts. Copyright © 2015 John Wiley & Sons, Ltd.     

Late Paleocene foraminiferal faunas with Chapmanina and Reticulophragmium from offshore southeastern Australia: a Tethyan influence

Samples from off southern New South Wales in approximately 1750 m water depth have yielded late Paleocene faunas of benthic and planktonic foraminifera and other invertebrates. Two faunal associations with a strong Tethyan influence, dominated respectively by Chapmanina conjuncta sp. nov. and Reticulophragmium naroomaensis sp. nov., are described; this is the first formal record of these genera from Australasia. The age of the host sediment is based on both benthic species and few planktonic foraminifera.

The environment at the time was warm temperate to subtropical at the southwestern extremity of a counter-clockwise Pacific Ocean gyre. The new occurrence extends the record of Palaeogene marine sediments and palaeoenvironments along the eastern margin of Australia and confirms earlier observations that conditions in the marine environment at that time were considerably warmer along the east coast of Australia than those along the southern margin; the biogeographic association was Tethyan. The circulation model may go some way to explaining coeval warmth along the east Antarctic coast.     

Mid-Cenozoic ostracod biostratigraphic range extensions and taxonomic notes on selected species from a new Oligocene (Duntroonian–Waitakian) fauna from southern New Zealand

AYRESS, M., ROBINSON, J.H. & LEE, D.E., March 2017. Mid-Cenozoic ostracod biostratigraphic range extensions and taxonomic notes on selected species from a new Oligocene (Duntroonian–Waitakian) fauna from southern New Zealand. Alcheringa 41, 487–498.

This paper discusses a highly diverse assemblage of Ostracoda, particularly biostratigraphically useful species, from a richly fossiliferous shallow-marine deposit of late Oligocene age on Cosy Dell farm, near Waimumu, Southland, New Zealand. The ostracod fauna, consisting of 126 species, is yet to be fully analysed, although it is clear that this new window into the nearshore fauna of the mid-Cenozoic provides the earliest records of many characteristic extant New Zealand genera and species, including several species hitherto only known as far back as the early Miocene (Otaian–Altonian New Zealand local Stages). Finding these younger species in an Oligocene deposit was unexpected and indicates that our current knowledge of mid-Cenozoic ostracod age ranges, particularly for nearshore species, is incomplete. Using nannofossils and molluscs, the Cosy Dell deposit is dated as late Oligocene (Duntroonian or lower Waitakian local Stages) in age; therefore, the new ostracod species occurrences described here are considered valid range extensions. Although the biostratigraphic application of the benthonic ostracod species discussed is limited owing to the effects of sedimentary facies and other palaeoenvironmental factors, the ostracod fossil record does include significant extinction and inception events that offer correlative potential for mid-Cenozoic stratigraphical studies. This study identified a need for modern illustration of many species, and we provide scanning electron microscope illustrations of those Cosy Dell taxa previously considered biostratigraphically useful, as support for species identification and associated biostratigraphic conclusions.

Michael Ayress [mike.ayress@rpsgroup.com], RPS ichron Group, Gadbrook Business Centre, Northwich CW9 7TN, UK; Jeffrey Robinson [jeffreyhrobinson@yahoo.co.nz] and Daphne Lee [daphne.lee@otago.ac.nz], Geology Department, University of Otago, Dunedin, New Zealand     

Subsistence continuity,change, and environmental adaptation at the site of Nugljanska,Istria, Croatia

This paper investigates changes in subsistence strategies at the upland cave site of Nugljanska (Croatia) at the end of the last ice age, during a time of rapid sea level rise and changing environment. We analysed the faunal assemblage from archaeological levels spanning the Pleistocene–Holocene transition (15,000–8000 years BP) and evaluated changes in relative abundance of species, measured species diversity, and compared the representation of terrestrial mammal and marine resources. We found a significant shift in the most abundant prey species exploited (from red deer, Cervus, to wild boar, Sus). There was some correlation between dietary diversification and periods of increased moisture availability and the spread of deciduous forest in the area. Our results suggest that there was a continuing reliance on terrestrial resources throughout time and that changes in dietary patterns were likely due to local environmental change and potentially, changing seasonal mobility strategies, at the Pleistocene–Holocene transition.     

The age of the Takatika Grit,Chatham Islands,New Zealand

Hollis, C.J, Stickley, C.E., Bijl, P.K., Schiøler, P., Clowes, C.D., Li, X, Campbell, H. March 2017. The age of the Takatika Grit, Chatham Islands, New Zealand. Alcheringa 41, xxx–xxx. ISSN 0311-5518.

The oldest Paleogene strata on Chatham Islands, east of New Zealand, are the phosphatized conglomerates and sandstones of the Takatika Grit that crops out on the northeastern coast at Tioriori and unconformably overlies the Chatham Schist. An intact Cretaceous–Paleogene boundary transition is not preserved at this locality. New biostratigraphic analysis of dinoflagellate, diatom and radiolarian microfossil assemblages confirms that the Takatika Grit is of late early–middle Paleocene (New Zealand Teurian stage) age but contains reworked microfossils of early Campanian (Early Haumurian) age. Vertebrate fossils found in this unit are inferred to be a mixture of reworked Cretaceous and in situ Paleocene bones and teeth. The overlying Tutuiri Greensand is of middle–late Paleocene age in its lower part and also contains reworked Cretaceous microfossils.

Christopher J. Hollis [c.hollis@gns.cri.nz], Chris Clowes [c.clowes@gns.cri.nz], Xun Li [x.li@gns.cri.nz], Hamish Campbell [h.campbell@gns.cri.nz], GNS Science, PO Box 30-368, Lower Hutt 5040, New Zealand; Catherine Stickley, Evolution Applied Limited, 50 Mitchell Way, Upper Rissington, Cheltenham GL54 2PL, UK [catherine.stickley@gmail.com]; Peter Bijl [p.k.bijl@uu.nl], Marine Palynology and Paleoceanography, Department of Earth Sciences, Utrecht University, 3584 CS Utrecht, the Netherlands; Poul Schiøler [poul.schioler@mgpalaeo.com.au], Morgan Goodall Palaeo, Unit 1/5 Arvida St, Malaga, WA 6090, Australia.     

Algae from Early and Middle Devonian limestones,tamworth belt,New South Wales,Australia

Eighteen genera of cosmopolitan marine algae are reported from Emsian and Eifelian limestones of New South Wales. Couvinianella, Paralitanaia, Perrierella, Pseudopalaeoporella and Renalcis are the most abundant taxa. Three distinctive floras are recognized: a prolific dasycladale-coccoid assemblage; a diverse udoteacean assemblage; and an undiversified udoteacean assemblage. None of these floras has a precise stratigraphic significance, although they indicate a latest Silurian-Middle Devonian age. Maslovina australense sp. nov. is described.     

Cretaceous plant fossils of Pitt Island,the Chatham group,New Zealand

Pitt Island, a part of the Chathams Islands group, lies 700 km east of New Zealand. Its geology includes the Tupuangi Formation, dated as Motuan to Teratan (late Albian to Santonian) on the basis of palynology. Samples of Tupuangi Formation mudstone yielded leaf cuticle assemblages dominated by araucarian and podocarp conifers and locally by angiosperms. The 12 distinguishable conifer taxa include a new species of Araucaria, A. rangiauriaensis, and the extinct genera Eromangia, Kakahuia (both Podocarpaceae), Otwayia (Cheirolepidiaceae), Paahake (Taxodiaceae or Taxaceae) and possibly Katikia (Podocarpaceae). Ginkgo and two types of dicotyledonous angiosperm cuticle are present. Based on the absence of bennettitaleans and rarity of Ginkgo, a Turonian or slightly younger age is inferred, making the Pitt Island assemblage the first Turonian plant macrofossils documented from New Zealand. The fossils provide a window into southern high-latitude (polar) vegetation of the mid-Cretaceous. Conifer charcoal (probably of Podocarpaceae) is locally abundant and suggests that fire was an important part of the ecosystem. A broad analogy with modern boreal conifer-deciduous angiosperm forests is suggested although clearly with warmer temperatures.     

Thelodont fish and conodonts from the Early Devonian of Reefton,New Zealand

Thelodont scales and associated fragments of conodont elements identified as Turinia sp. cf. Turinia australiensis and Ozarkodina sp. cf. Ozarkodina buchanensis respectively are described for the first time from the Early Devonian Murray Creek Formation of Reefton, New Zealand. The conodont and thelodont components of the fauna suggest a late Pragian to early Emsian age for the assemblage.     

Lark Quarry revisited: a critique of methods used to identify a large dinosaurian track-maker in the Winton Formation (Albian–Cenomanian), western Queensland,Australia

Thulborn, R.A., 2013. Lark Quarry revisited: a critique of methods used to identify a large dinosaurian track-maker in the Winton Formation (Albian–Cenomanian), western Queensland, Australia. Alcheringa, http://dx.doi.org/10.1080/03115518.2013.748482

A remarkable assemblage of dinosaur tracks in the Winton Formation (Albian–Cenomanian) at Lark Quarry, a site in western Queensland, Australia, has long been regarded as evidence of a dinosaurian stampede. However, one recently published study has claimed that existing interpretation of Lark Quarry is incorrect because the largest track-maker at the site was misidentified and could not have played a pivotal role in precipitating a stampede. That recent study has identified the largest track-maker as an ornithopod (bipedal plant-eating dinosaur) similar or identical to Muttaburrasaurus and not, as formerly supposed, a theropod (predaceous dinosaur) resembling Allosaurus. Those iconoclastic claims are examined here and are shown to be groundless: they are based partly on misconceptions and partly on fabricated data that have been assessed uncritically using quantitative measures of questionable significance. Such ill-founded claims do not reveal any substantial flaw in the existing interpretation of the Lark Quarry dinosaur tracks.     

Deciduous Nothofagus leaves from the Miocene of Cornish Head,New Zealand

Pole, M.S., 1994:03:28. Deciduous Nothofagus leaves from the Miocene of Cornish Head, New Zealand. Alcheringa 18, 79–83. ISSN 0311-5518.

Nothofagus leaves with plicate vernation, indicating a deciduous habit, are recorded from the Late Miocene of New Zealand. This is the first unequivocal record in New Zealand of deciduous Nothofagus, deciduous species now being restricted to Tasmania and South America.     

Prehistoric Butchery and Consumption of Birds in the Kingdom of Tonga,South Pacific

We evaluate the preservational attributes (element frequency, breakage, burning, cut-marks, rodent gnawing, and age) of ca. 500 bird bones from three prehistoric archaeological sites on the Polynesian islands of Foa and Lifuka in the Ha‘apai Group, Kingdom of Tonga. Two of the sites lie in calcareous beach sands whereas the third is the refuse infilling of a well. Although differing in age, all three sites are unequivocally cultural in origin, as evidenced by rich artifact assemblages and various sedimentological features (pits, hearths, etc.) that reflect human activities. The sites also contain bones from a diverse assemblage of marine fish, marine and terrestrial reptiles (sea turtles, iguanas), and terrestrial mammals (fruit bats, rats, pigs, dogs). We find no evidence for deposition of bones (bird or otherwise) in these Tongan sites by non-human agents. This is expected given that we are unaware of any non-human species or geological process that would concentrate the bones of fishes, reptiles, birds, and mammals on a beach ridge or in a well in Tonga. This is especially the case since the species range from very small to very large, and represent marine, fresh water, coastal, and forested habitats. Nevertheless, clear evidence of cultural involvement cannot be discerned on most individual bones, whether bird or non-bird. Furthermore, most taphonomic attributes (element frequency, breakage, burning, and cut-marks) of bones of a domesticated species (the chicken, Gallus gallus) resemble those found on bones of indigenous landbirds. We believe that all bones in any zooarchaeological assemblage should be evaluated carefully to determine who or what was responsible for their deposition. We see no reason, however, why bird bones should be held to some standard higher than those applied to the bones of other taxa, as some have suggested.     

New Zealand’s “arc of influence”: the “clean,blue, green” country

Over the last 50 years, the area of New Zealand has been expanded to include territorial seas, an Exclusive Economic Zone, marine protected areas, an extended continental shelf, the Ross Sea, and a wedge of the Antarctic continent. While New Zealand’s territory is now significantly more marine rather than terrestrial, the country is often imagined as a series of isolated islands floating adrift in the Pacific. In this paper, we consider how the space of the nation-state can be reimagined to create a more relevant sense of place and identity. We argue that the perception of New Zealand as “100% pure” and “clean green” can be developed into a “clean, blue, green” image that better reflects the country’s expansive and diverse “arc of influence” through conservation values. We focus on the role of mapping within this issue; critiquing existing maps of New Zealand’s marine territory while also presenting our own speculative maps.     

Biodiversity and palaeoecology of Foulden Maar: an early Miocene Konservat-Lagerstätte deposit in southern New Zealand

Lee, D.E., Kaulfuss, U, Conran, J.G., Bannister, J.M. & Lindqvist, J.K., August 2016. Biodiversity and palaeoecology of Foulden Maar: an early Miocene Konservat-Lagerstätte deposit in southern New Zealand. Alcheringa 40, xxx–xxx. ISSN 0311-5518.

This paper highlights the biodiversity and palaeoecology of the 23 million year old Foulden Maar, the first Konservat-Lagerstätte deposit described from New Zealand and a key site for reconstructing early Miocene Southern Hemisphere terrestrial ecosystems. The 1000-m-diameter, ca 200-m-deep Foulden Maar volcanic crater lake was a closed system with anoxic bottom waters, capturing and preserving in exquisite detail organisms from the lake and adjacent rainforest. The fossils include numerous leaves, flowers with in situ pollen, fruits, seeds, fish and arthropods. Surrounding Foulden Maar was an evergreen, Lauraceae-dominated notophyll vine forest with a diverse understorey, lianes, epiphytes and mistletoes. Diverse pollination and seed dispersal modes are evident. Fish include larval to adult stages of articulated specimens of Galaxias, some with preserved soft tissue and a species of eel resembling Anguilla. The arthropod fauna comprises ca 20 families in the orders Araneae (spiders), Plecoptera (stoneflies), Odonata (dragonflies), Isoptera (termites), Hemiptera (true bugs), Diptera (true flies), Coleoptera (beetles), Trichoptera (caddis flies) and Hymenoptera (wasps, ants and bees), representing faunas typical of soil, leaf litter, forest floor or freshwater habitats. Many fossil taxa have close relatives in the extant New Zealand biota; others are now locally extinct. Coprolites containing quartz sands sourced from outside the lake indicate the presence of volant birds, presumably waterfowl. The Foulden Maar Lagerstätte is crucial for reconstructing Miocene lake and forest ecosystems in New Zealand, particularly the terrestrial arthropod component.

Daphne E. Lee [daphne.lee@otago.ac.nz], Department of Geology, University of Otago, PO Box 56, Dunedin, New Zealand., Uwe Kaulfuss [uwe.kaulfuss@otago.ac.nz] and Jon K. Lindqvist, [jonlind@ihug.co.nz], Department of Geology, University of Otago, PO Box 56, Dunedin, New Zealand; John G. Conran [john.conran@adelaide.edu.au], Australian Centre for Evolutionary Biology & Biodiversity and Sprigg Geobiology Centre, School of Biological Sciences, Benham Bldg DX 650 312, The University of Adelaide, SA 5005, Australia; Jennifer M. Bannister [jennifer.bannister@xtra.co.nz], Department of Botany, University of Otago, PO Box 56, Dunedin, New Zealand.     

New evidence for a Silurian (Ludlow) age for the earliest Baragwanathia flora

In the Silurian-Devonian marine clastic strata of the Yea District, central Victoria, two distinct flora and faunal assemblages containing elements of the Baragwanathia flora occur separated stratigraphically by 1700m of siltstone. The upper assemblage is Early Devonian (Praguian) in age, whilst the lower assemblage is considered to be Late Silurian (Ludlow).