Article
Plant Sciences
Theodore P. Matel, Maria A. Gandolfo, Elizabeth J. Hermsen, Peter Wilf
Summary: Two distinct types of fossil infructescences from the early Eocene Laguna del Hunco flora in Patagonia, Argentina, have been found to be affiliated with the family Cunoniaceae. The study reveals the evolutionary and biogeographical significance of these fossils and introduces two new fossil genera, Racemofructus and Cunoniocarpa, with affinities to tribes Cunonieae and Caldcluvieae respectively. These fossils, alongside other evidence from southern South America and Antarctica, suggest that Cunoniaceae were diversified and widely distributed in the southern hemisphere by the early Eocene period.
AMERICAN JOURNAL OF BOTANY
(2022)
Article
Geosciences, Multidisciplinary
Justin Gosses, Alan R. Carroll, Benjamin T. Bruck, Brad S. Singer, Brian R. Jicha, Eugenio Aragon, Andrew P. Walters, Peter Wilf
Summary: The Eocene Huitrera Formation in northwestern Patagonia, Argentina, is known for its diverse fossil biotas. Through new 40Ar/39Ar age determinations and analysis of different depositional environments, a better understanding of the age and significance of the fossil assemblages has been achieved. The findings provide valuable insights into South American mammal evolution, climate change, and geographic isolation.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2021)
Article
Plant Sciences
Mariana Brea, Ari Iglesias, Peter Wilf, Eliana Moya, Maria A. Gandolfo
Summary: This study presents a detailed anatomical description of a new species of the Winteraceae genus Winteroxylon from a well-preserved trunk fossil in Patagonia, Argentina. The fossil wood shares similarities with extant genera in Australasian and Malesian rainforests, particularly the genus Bubbia. It is the first reliable macrofossil record of Winteraceae from South America and supports the abundant palynological record of the family on the continent.
INTERNATIONAL JOURNAL OF PLANT SCIENCES
(2021)
Article
Biotechnology & Applied Microbiology
Marianela Arijon, Maria Paula Raffo, Noela Sanchez, Fernando G. Dellatorre
Summary: The invasive brown seaweed Undaria pinnatifida was first recorded in Golfo Nuevo, northern Patagonia, Argentina in 1992. Since then, it has spread along the Argentine coast, forming dense seasonal kelp beds. This study aimed to investigate the temporal and ontogenetic variations of pigment content and color in Undaria from Golfo Nuevo, and their relationship with environmental factors.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2023)
Article
Geology
Thomas Martin, Francisco J. Goin, Julia A. Schultz, Javier N. Gelfo
Summary: This paper reports on the discovery of rare Cretaceous animal teeth fragments in Santa Cruz province, Argentina, revealing new records of docodontans, Cretaceous australosphenidans, and stem dryolestids in South America. These fossils may provide important clues for understanding faunal interrelationships between Australia and South America during the late Early/early Late Cretaceous.
CRETACEOUS RESEARCH
(2022)
Article
Paleontology
Maximiliano J. Alvarez, Claudia J. Del Rio
Summary: The newly established endemic genus Titomaya in Patagonia includes a new species along with a previously known species, ruling out the long-held belief of the presence of Meretrix in the region. This adds to the list of endemic taxa characterizing the Danian assemblages in Patagonia.
Article
Geology
Ana Andruchow-Colombo, Maria A. Gandolfo, Nestor R. Cuneo, Ignacio H. Escapa
Summary: The ginkgophyte lineage has a rich fossil record dating back to the Paleozoic era and is now represented by Ginkgo biloba. A new species, Ginkgoites villardeseoanii, was discovered in uppermost Cretaceous deposits in Patagonia, Argentina, and shows evidence of insect damage, marking the first Cretaceous record of interaction between ginkgophytes and insects in the Southern Hemisphere.
CRETACEOUS RESEARCH
(2022)
Article
Geology
Agustin Perez Moreno, Alejandro Otero, Jose L. Carballido, Leonardo Salgado, Jorge O. Calvo
Summary: This study describes the appendicular skeleton of Rinconsaurus from Argentina and analyzes its phylogenetic relationships with other titanosaurs. Rinconsaurus shows distinct features and a unique combination of characters compared to other titanosaurs. Based on size estimation, the body weight of Rinconsaurus is estimated to be between 3-5 tonnes. The study also includes Rinconsaurus in an expanded phylogenetic data matrix and identifies it as a member of the Rinconsauria clade.
CRETACEOUS RESEARCH
(2023)
Article
Agronomy
Nelson Bernardi Lima, Cinthia Conforto, Dannae Lilia Serri, Ernesto Javier Campilongo Mancilla, Sebastian Stenglein, Silvina Vargas-Gil
Summary: Anthracnose disease, caused by Colletotrichum species, is a significant threat to alfalfa crops globally, with symptoms observed in commercial fields in Cordoba province, Argentina. Three fungal isolates collected from infected plants were identified as Colletotrichum americae-borealis through morphological and genetic analysis.
Article
Zoology
Florencia Paolucci, Marta S. Fernandez, Monica R. Buono, Jose Cuitino
Summary: The giant, dwarf, and pygmy sperm whale are the only three extant species of physeteroids. Fossil records of physeteroids in Miocene marine sediments in Patagonia, Argentina are significant. The taxonomic classification of 'Aulophyseter' rionegrensis has been a subject of debate for nearly a century, and recent phylogenetic analyses have not supported its proposed relationship with other species.
ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
(2021)
Article
Multidisciplinary Sciences
Sofia Capasso, Carla Fiorito, Martin Garcia-Varela, Julia I. Diaz
Summary: This study reports the presence of Plagiorhynchus (Plagiorhynchus) crassicollis in Patagonia, Argentina, providing morphological, molecular, and pathological characterization. Molecular analysis showed its relationship with Plagiorhynchus (Plagiorhynchus) aznari from northern Mexico. Pathological findings included ulcerative enteritis, granulomatous inflammation, and peritonitis. This expands the host and geographical record of P. (P.) crassicollis and provides the first molecular characterization in the Neotropics.
Article
Spectroscopy
Anastasia Rousaki, Cristina Bellelli, Mariana Carballido Calatayud, Emmanuel Vargas, Adam Hajduk, Oscar Palacios, Cristina Vazquez, Luc Moens, Peter Vandenabeele
Summary: Micro-Raman spectroscopy was used to analyze samples from shelters in Piedra Parada valley, Chubut province, Argentinian Patagonia, revealing the composition of colored layers and degradation products, as well as the impact of materials on rock paintings and support. The study positively identified minerals like haematite, goethite, and gypsum in the painted layers, and silicates, apatite, and goethite in the rock support. Point analysis and micro-Raman mappings provided a better understanding of the materials and layer sequencing in the samples.
JOURNAL OF RAMAN SPECTROSCOPY
(2022)
Article
Zoology
Diego Leonardo Carpintero, Sebastian de Biase
Summary: This paper describes a new species, Hyperbius joceliae, from the north of Tierra del Fuego Island, comparing its diagnostic characters with the only known species of the genus. The distributional patterns of South American Acanthosomatidae and speciation of the Patagonian fauna of this family are also briefly discussed in the study.
Article
Zoology
Kevin I. Sanchez, Mariana Morando, Luciano J. Avila
Summary: We describe Liolaemus attenboroughi sp. nov., a lizard species previously confused with L. kingii in northwestern Patagonian Steppe, Argentina. Recent molecular evidence supports its independent evolutionary status. In this study, we provide a morphological diagnosis, compare three molecular species delimitation methods, and present an updated phylogeny of the L. kingii group. Based on current distribution information, this new species is allopatric with geographically close species of the L. kingii group.
Article
Multidisciplinary Sciences
Federico L. Agnolin, Sergio Bogan, Laureano R. Gonzalez Ruiz
Summary: The fossil record of freshwater fishes and anurans from the Miocene in Patagonia is relatively sparse, with a large number of specimens remaining undescribed. The described fossil association of percomorphacean fishes and calyptocephalellid anurans from the Colton Cura Formation shows low taxonomic diversity, matching patterns seen in other Cenozoic fossil sites in Patagonia and extant species in the region. The few lineages represented in the fossil record of frogs and fishes in Patagonia have a long evolutionary history in the area, some tracing back to the Late Mesozoic.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2021)
Article
Evolutionary Biology
Daniel T. Ksepka, James F. Parham, James F. Allman, Michael J. Benton, Matthew T. Carrano, Karen A. Cranston, Philip C. J. Donoghue, Jason J. Head, Elizabeth J. Hermsen, Randall B. Irmis, Walter G. Joyce, Manpreet Kohli, Kristin D. Lamm, Dan Leehr, Joses L. Patane, P. David Polly, Matthew J. Phillips, N. Adam Smith, Nathan D. Smith, Marcel Van Tuinen, Jessica L. Ware, Rachel C. M. Warnock
SYSTEMATIC BIOLOGY
(2015)
Article
Plant Sciences
Elizabeth J. Hermsen, Maria A. Gandolfo, Maria del Carmen Zamaloa
AMERICAN JOURNAL OF BOTANY
(2012)
Article
Plant Sciences
Monica R. Carvalho, Peter Wilf, Elizabeth J. Hermsen, Maria A. Gandolfo, N. Ruben Cuneo, Kirk R. Johnson
AMERICAN JOURNAL OF BOTANY
(2013)
Review
Plant Sciences
Elizabeth J. Hermsen
Article
Plant Sciences
N. Ruben Cuneo, Elizabeth J. Hermsen, Maria A. Gandolfo
INTERNATIONAL JOURNAL OF PLANT SCIENCES
(2013)
Article
Biodiversity Conservation
Jonathan R. Hendricks, Erin E. Saupe, Corinne E. Myers, Elizabeth J. Hermsen, Warren D. Allmon
Article
Plant Sciences
Elizabeth J. Hermsen, Maria A. Gandolfo, N. Ruben Cuneo
PLANT SYSTEMATICS AND EVOLUTION
(2014)
Article
Multidisciplinary Sciences
N. Ruben Cuneo, Maria A. Gandolfo, Maria C. Zamaloa, Elizabeth Hermsen
Article
Plant Sciences
Elizabeth J. Hermsen, Nathan A. Jud, Facundo De Benedetti, Maria A. Gandolfo
INTERNATIONAL JOURNAL OF PLANT SCIENCES
(2019)
Article
Plant Sciences
Zack J. Quirk, Elizabeth J. Hermsen
Summary: A new fossil species of Corylopsis, C. grisea, based on seeds from the early Pliocene Gray Fossil Site in eastern Tennessee, USA, extends the fossil record of Corylopsis in North America to the Neogene. The discovery supports the interpretation of GFS as a forested refugium that provided a relatively moist environment for subtropical to warm temperate plants during a time of cooling and drying. The presence of C. grisea at GFS also provides additional evidence for the biogeographic connection between the paleoflora at GFS and the modern flora of eastern Asia.
JOURNAL OF SYSTEMATICS AND EVOLUTION
(2021)
Article
Plant Sciences
Caroline Siegert, Elizabeth J. Hermsen
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
(2020)
Article
Plant Sciences
Elizabeth J. Hermsen
Summary: The study focuses on the fossil record of Passiflora and Passifloroideae, with a new fossil species based on seeds described. By examining fossil seeds, the research identified different subgeneric groups within Passiflora and reassigned two Miocene fossil seed species from Europe to Passifloroidesperma. The presence of fossil passifloroid seeds in Europe suggests a historical occurrence of Passifloroideae in the region.
INTERNATIONAL JOURNAL OF PLANT SCIENCES
(2021)
Article
Plant Sciences
Elizabeth J. Hermsen
Summary: This study reports the discovery of rare hollow seeds from the Gray Fossil Site in Tennessee, USA, which have been identified as a third fossil seed species of the Passiflora genus. These fossil seeds have distinctive shape and texture, possibly belonging to the subgenus Decaloba. Based on the distribution of fossil and modern species, it is suggested that Passiflora may have expanded into Europe and the Asian-Oceanian Paleotropics through the North Atlantic and Antarctic routes respectively.
AMERICAN JOURNAL OF BOTANY
(2023)
Review
Plant Sciences
Maria A. Gandolfo, Elizabeth J. Hermsen