Pterygotid eurypterid chelicera from the Lower Devonian of Victoria

A single eurypterid (Arthropoda: Chelicerata) chelicera, assigned to Acutiramus sp. cf. A. bohemicus, is described from the Wilson Creek Shale, Turtons Creek inlier, north of Foster, Victoria, Australia. The specimen comprises the proximal portion of both rami. This pterygotid chelicera supports an Early Devonian (?Lochkovian) age for the stratum at this locality, by comparison with occurrences of A. bohemicus from the Czech Republic and closely related species in northern Gondwana.     

Miralinidae (Marsupialia: Phalangeroidea) from northern Australia,including the youngest occurrence of the family

Five isolated molars from two localities in the Northern Territory, the middle Miocene Bullock Creek and late Oligocene Kangaroo Well sites, are assigned to the new miralinid genus Barguru, which includes the three new species: Barguru kayir, Barguru maru and Barguru kula. The Miralinidae was previously thought to be restricted to the late Oligocene and early Miocene, but the occurrence at Bullock Creek extends the time range of this family into the middle Miocene. Analysis of metaloph development in the Miralinidae suggests that loph formation in this family followed a different trajectory to that of phalangerids.     

An Eocene moncotyledon from Nelly Creek,Central Australia,with affinities to Hemerocallidaceae (Lilianae: Asparagales)

A monocotyledonous partial leaf macrofossil from Eocene beds at Nelly Creek near Lake Eyre in Central Australia is described. It is recognised as being close to several extant Australasian species of Dianella Lam. ex Juss. (Hemerocallidaceae), especially the D. odorata Blume / D. bambusifolia Hallier f. complex. However, because it has unique cuticular features relative to extant Hemerocallidaceae, the fossil is assigned to the new genus and species Dianellophyllum eocenicum Conran, Christophel & Cunningham.     

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.     

Mill Creek Chert Hoes and Prairie Soils: Implications for Cahokian Production and Expansion

Abstract

Population growth in the American Bottom after A.D. 1050 may have outstripped agricultural productivity. It has been suggested that farmers expanded agricultural practices into previously unused upland prairies to expand production. Historic accounts describe the difficulty that early settlers had with prairie, making this supposition questionable. However, experiments with replica Mill Creek hoes suggest that these tools were capable of converting prairie into farmland.     

Sauropod (Saurischia: Dinosauria) material from the Early Cretaceous Griman Creek Formation of the Surat Basin,Queensland, Australia

An isolated ischium and possible neural arch recovered from the lower–middle Albian Griman Creek Formation near Surat, are the only sauropod postcranial elements from that unit in Queensland. This is the southernmost occurrence of sauropod post-cranial remains in eastern Australia. Comparison with other sauropod remains suggests that the ischium might represent an indeterminate titanosaur that is different from taxa previously named from Australia.     

From the Piedmont to the Coast: LA-ICP-MS 87Sr/86Sr evidence for short-term,long-distance mobility in the American Southeast

Mounting evidence suggests that the Archaic Southeast shell mound builders had large-scale trade networks and engaged in social aggregations. Here, incremental ⁸⁷Sr/⁸⁶Sr values were measured by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) in third molar enamel samples of 11 individuals interred in the Middle Archaic Harris Creek shell burial mound in St. John's River Valley (SJRV), Florida. Results reveal that SJRV residents engaged in short-term, long-distance mobility up to the Piedmont margin and excursions into coastal areas, consistent with direct trading and social gatherings. Two individuals are interpreted as migrants from central Tennessee, suggesting a link to the Ohio River Valley shell mound builders.     

Ancient Maya wood selection and forest exploitation: a view from the Paynes Creek salt works,Belize

Ancient building construction wood preserved in a peat bog below the seafloor in a shallow mangrove lagoon in Paynes Creek National Park, Belize, provides an exceptional record of Classic Maya wood use. Identifications of construction wood at Early Classic Chan B'i, and Late Classic Atz'aam Na, are reported and discussed to assess forest exploitation and species selection over time. Black mangrove (Avicennia germinans) dominates the Early Classic assemblage. The Late Classic assemblage is characterized by greater variability and an absence of mangrove species. When considered in the environmental context, identified species conform to principles of optimal foraging. The change in the wood assemblage over time suggests overexploitation of forest resources, resulting in deforestation of the local landscape and subsequent adaptation of foraging behavior. Deforestation is linked to the wider social context in which growing inland populations created demand for salt, putting greater pressure on the forest resources exploited by the Paynes Creek salt works for fuel and timber.     

Standing Posts and Special Substances: Gathering and Ritual Deposition at Feltus (22Je500), Jefferson County,Mississippi

Because it immediately precedes the Mississippi period, Coles Creek (A.D. 700–1200) culture is often viewed through the lens of Mississippian social organization. In particular, early platform mound-and-plaza complexes have long been understood as elite compounds due to their physical similarities with later sites. However, evidence regarding the construction and use of the monumental landscape at the Feltus site (22JE500) in Jefferson County, MS, suggests that platform mound construction was but one aspect of a broader ritual sequence aimed at gathering the dispersed Coles Creek community. In addition to mound building, this sequence included the setting and removal of freestanding posts, ritual feasting, and burial of the dead and focused on explicit deposition of meaningful objects and substances. Archaeological, ethnohistoric, and ethnographic analyses of the objects and substances included in the ritual deposits at Feltus suggest that they helped forge relationships between an extended kin network, including non-human fictive kin and non-living human kin. In this context, we find a metaphor of gathering to be useful in understanding the archaeological remains of a ritual sequence focused on bringing together social, cosmological, and temporal domains. This provides a distinctly different take on the meaning and use of platform mounds based on a review of Native beliefs and practices that looks beyond the traditionally relied upon sources.