Results 51 to 60 of about 6,258 (199)

Conellae, enigmatic structures on cephalopod shells—shapes, distribution, and formation [PDF]

, 2019
Conellae, enigmatic cone-shaped structures which can be found on the surface of internal moulds of cephalopod shells (predominantly of ammonoids), are regarded herein as the product of remote (biologically induced) biomineralization formed in closed-off ...
Hoffmann, René, Keupp, Helmut, Mironenko, Aleksandr   +2 more
core   +1 more source

Divergent defense strategies and niche partitioning in Cretaceous micro‐beetles

Journal of Systematics and Evolution, EarlyView.
We report a new clambid beetle from mid‐Cretaceous Kachin amber, Scutacalyptus kolibaci gen. et sp. nov., characterized by a flattened body and explanate margins. Alongside spiny and conglobating clambid forms, this diversity reflects niche partitioning and varied antipredator strategies in the Cretaceous forest floor.
Yan‑Da Li, Zhi‐Hao Qi, Di‑Ying Huang, Chen‑Yang Cai   +3 more
wiley   +1 more source

Micropaleontological observations on the Lower Cretaceous iron ore-related formations of the Mecsek Mts. (Upper Valanginian–Lower Hauterivian, South Hungary) [PDF]

, 2018
The Late Valanginian–Early Hauterivian iron ore deposit and related formations at Zengővárkony (Mecsek Mts., South Hungary) provided a relatively rich microfauna of foraminifera, crustacean microcoprolites, and sponge spicules.
Bujtor, László, Szinger, Balázs
core   +1 more source

Morphology and paleoecology of a hybodontiform with serrated teeth, Priohybodus arambourgi, from the Late Jurassic of northeastern Brazil

The Anatomical Record, Volume 309, Issue 1, Page 5-32, January 2026.
Abstract Hybodontiformes was a diverse, successful, and important group of shark‐like chondrichthyans known from a variety of ecosystems. Some representatives of the order had a wide palaeogeographic distribution, as is the case with Priohybodus arambourgi. With a multicuspidate crown, P. arambourgi was the first hybodontiform to develop fully serrated
Estevan Eltink, Kelly Roberta da Silva, Marco Aurélio Gallo de França, Débora Melo Ferrer de Morais, Matías Soto, Christopher J. Duffin   +5 more
wiley   +1 more source

Application of Autofluorescence for Confocal Microscopy to Aid in Archaeoparasitological Analyses [PDF]

, 2019
Confocal laser scanning microscopy (CLSM) was used to examine archaeoparasitological specimens from coprolites associated with La Cueva de los Muertos Chiquitos (CMC) located near present-day Durango, Mexico.
Elowsky, Christian, Morrow, Johnica Jo
core   +1 more source

Geoarchaeological Investigation of Early Neolithic Lagoonal Fringe Landscapes in the Netherlands

Geoarchaeology, Volume 41, Issue 1, January/February 2026.
ABSTRACT Coastal wetlands have historically been portrayed as too marginal for early crop cultivation during the Mesolithic–Neolithic transition due to their dynamic hydrology, low elevation, and poor drainage. However, growing evidence suggests that these environments played a crucial role in the spread of agriculture. We examined buried and submerged
Elena Familetto, Kim Cohen, Kim de Wit, Bertil van Os, Wim Hoek, Hans Huisman   +5 more
wiley   +1 more source

Microbial Communities in Pre-Columbian Coprolites

PLoS ONE, 2013
The study of coprolites from earlier cultures represents a great opportunity to study an "unaltered" composition of the intestinal microbiota. To test this, pre-Columbian coprolites from two cultures, the Huecoid and Saladoid, were evaluated for the presence of DNA, proteins and lipids by cytochemical staining, human and/or dog-specific Bacteroides spp.
Santiago-Rodriguez, Tasha M., Narganes-Storde, Yvonne M., Chanlatte, Luis, Crespo-Torres, Edwin, Toranzos, Gary A., Jiménez-Flores, Rafael, Hamrick, Alice, Cano, Raul J.   +7 more
openaire   +5 more sources

Minimally Destructive Radiocarbon Dating of Bone

Rapid Communications in Mass Spectrometry, Volume 40, Issue 9, 15 May 2026.
ABSTRACT Rationale Bone is commonly used in radiocarbon dating in archaeology and other disciplines. Despite advances in collagen extraction protocols, the process remains destructive, requiring sawing, drilling or crushing of bone material. While non‐destructive approaches have recently been applied in ancient genomics and palaeoproteomics, no ...
Tom Higham, Katharina Luftensteiner, Laura van der Sluis, Maddalena Giannì, Maria Wiegele, Anastasia Papadogianni, Peter Steier, Daniela Gruber, Brigitte Schmidt, Katy Schmidt, Andrei Belinski, Romain Mensan, Maxim Kozlikin, Michael Shunkov, Petr Neruda, Zdeňka Nerudová, Barbara Horejs, John Schulze, Katerina Douka, Thomas W. Stafford Jr.   +19 more
wiley   +1 more source

Paleomicrobiology: revealing fecal microbiomes of ancient indigenous cultures. [PDF]

PLoS ONE, 2014
Coprolites are fossilized feces that can be used to provide information on the composition of the intestinal microbiota and, as we show, possibly on diet.
Raul J Cano, Jessica Rivera-Perez, Gary A Toranzos, Tasha M Santiago-Rodriguez, Yvonne M Narganes-Storde, Luis Chanlatte-Baik, Erileen García-Roldán, Lucy Bunkley-Williams, Steven E Massey   +8 more
doaj   +1 more source

Dicrocoelium dendriticum found in a Bronze Age cemetery in western Iran in the pre-Persepolis period: The oldest Asian palaeofinding in the present human infection hottest spot region [PDF]

, 2015
Dicrocoeliasis of animals and humans is caused by trematode species of the genus Dicrocoelium, mainly Dicrocoelium dendriticum in ruminants of the Holarctic region. D.
Hoseini, Ghasem., Mas-Coma, Santiago., Masoumian, Mohammad., Mobedi, Iraj., Mokhtarian, Kobra., Mowlavi, Gholamreza., Naseri, Reza., Nekouei, Parisa., Sadat Makki, Mahsa.   +8 more
core   +1 more source