Maureen A O'Leary
Datos Biográficos
| ID | 5209271 |
|---|---|
| NOMBRE | Maureen A O'Leary |
| NOMBRES | Maureen A |
| APELLIDO | O'Leary |
| FIRMA | LEARY M A O |
| AFILIACIONES | Department of Anatomical Sciences, Renaissance School of Medicine, Stony Brook University; Division of Paleontology, American Museum of Natural History |
| ORCID | 0000-0001-7837-5708 |
| VERIFICADO | Sí |
| TOTAL DE OBRAS | 6 |
| TOTAL DE CITAS | 3 |
| TOTAL COMO AUTOR | 6 |
| TOTAL COMO EDITOR | 0 |
| PRIMER AÑO DE PUBLICACIÓN | 1996 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 2025 |
| ÍNDICE H | 1 |
New Cranial and Postcranial Remains of the Once Enigmatic Early Eocene Mammal Wyolestes (Mammalia, Ferae, Hyaenodonta) from North America, and Phylogenetic Evidence for its Interordinal Relationships
Wyolestes is an extinct placental mammal from early Eocene (Wasatchian) rocks of North America whose phylogenetic position has been enigmatic for decades. Known from three species with distinct, high-cusped molars, the genus has been difficult to assign to a higher clade within Placentalia in part because it has, until now, been known primarily from dentitions. Here we describe new postcranial material of Wyolestes iglesius; new cranial, dental, …
A dense sample of fossil primates (Adapiformes, Notharctidae, Notharctinae) from the Early Eocene Willwood Formation, Wyoming
OBJECTIVES: The Willwood Formation of the southern Bighorn Basin, Wyoming is a fluvial rock sequence that spans approximately 3 million years of early Eocene time. It has yielded one the largest collections of fossil mammals in the world including thousands of dentitions of extinct lemur-like primates known as notharctines. In the southern Bighorn Basin, specimens of these primates have been collected on numerous paleontological expeditions and t…
Stratigraphy and Paleobiology of the Upper Cretaceous-Lower Paleogene Sediments from the Trans-Saharan Seaway in Mali
An epicontinental sea bisected West Africa periodically from the Late Cretaceous to the early Eocene, in dramatic contrast to the current Sahara Desert that dominates the same region today. Known as the Trans-Saharan Seaway, this warm and shallow ocean was a manifestation of globally elevated sea level associated with the rapid break-up of the supercontinent Gondwana in the late Mesozoic. Although it varied in size through time, the Trans-Saharan…
Comparative Basicranial Anatomy of Extant Terrestrial and Semiaquatic Artiodactyla
Comparative data from the ear region has played an important role in recent combined-data phylogenetic analyses of the relationships of living and extinct Artiodactyla and the position of that clade among Euungulata. These studies have also been important for establishing the phylogenetic position of Cetacea and for understanding the relationships of a diversity of euungulate species to their fossil relatives. Detailed and standardized descriptiv…
An Anatomical and Phylogenetic Study of the Osteology of the Petrosal of Extant and Extinct Artiodactylans (Mammalia) and Relatives
I describe and figure petrosal bones for a sample of 35 (12 extinct, 23 extant) artiodactylans, perissodactylans, †mesonychids, and archaic ungulates. Detailed herein are the cladistic characters of the petrosal used in the recent combined analysis of molecular and morphological data by Spaulding et al. (2009). That analysis, the largest in taxa and characters for artiodactylans (including cetaceans) to date, showed that hippopotamids are the clo…
Evolution of molar enamel microstructure in North American Notharctidae (primates)
Evolutionary changes in gross dental morphology and body size of early to middle Eocene North American notharctids is thought to reflect a dietary shift from frugivory to folivory;Cantiusspp. were largely frugivorous, whereasNotharctusspp. andCopelemurwere probably more folivorous. Here we report on the evolution of molar enamel microstructure in the notharctid clade and its relationship to adaptive change. Molar teeth of ten North American notha…
Evolution of molar enamel microstructure in North American Notharctidae (primates)
Evolutionary changes in gross dental morphology and body size of early to middle Eocene North American notharctids is thought to reflect a dietary shift from frugivory to folivory;Cantiusspp. were largely frugivorous, whereasNotharctusspp. andCopelemurwere probably more folivorous. Here we report on the evolution of molar enamel microstructure in the notharctid clade and its relationship to adaptive change. Molar teeth of ten North American notha…
A dense sample of fossil primates (Adapiformes, Notharctidae, Notharctinae) from the Early Eocene Willwood Formation, Wyoming
OBJECTIVES: The Willwood Formation of the southern Bighorn Basin, Wyoming is a fluvial rock sequence that spans approximately 3 million years of early Eocene time. It has yielded one the largest collections of fossil mammals in the world including thousands of dentitions of extinct lemur-like primates known as notharctines. In the southern Bighorn Basin, specimens of these primates have been collected on numerous paleontological expeditions and t…
Evolution of molar enamel microstructure in North American Notharctidae (primates)
Evolutionary changes in gross dental morphology and body size of early to middle Eocene North American notharctids is thought to reflect a dietary shift from frugivory to folivory;Cantiusspp. were largely frugivorous, whereasNotharctusspp. andCopelemurwere probably more folivorous. Here we report on the evolution of molar enamel microstructure in the notharctid clade and its relationship to adaptive change. Molar teeth of ten North American notha…
An Anatomical and Phylogenetic Study of the Osteology of the Petrosal of Extant and Extinct Artiodactylans (Mammalia) and Relatives
I describe and figure petrosal bones for a sample of 35 (12 extinct, 23 extant) artiodactylans, perissodactylans, †mesonychids, and archaic ungulates. Detailed herein are the cladistic characters of the petrosal used in the recent combined analysis of molecular and morphological data by Spaulding et al. (2009). That analysis, the largest in taxa and characters for artiodactylans (including cetaceans) to date, showed that hippopotamids are the clo…
Comparative Basicranial Anatomy of Extant Terrestrial and Semiaquatic Artiodactyla
Comparative data from the ear region has played an important role in recent combined-data phylogenetic analyses of the relationships of living and extinct Artiodactyla and the position of that clade among Euungulata. These studies have also been important for establishing the phylogenetic position of Cetacea and for understanding the relationships of a diversity of euungulate species to their fossil relatives. Detailed and standardized descriptiv…
Stratigraphy and Paleobiology of the Upper Cretaceous-Lower Paleogene Sediments from the Trans-Saharan Seaway in Mali
An epicontinental sea bisected West Africa periodically from the Late Cretaceous to the early Eocene, in dramatic contrast to the current Sahara Desert that dominates the same region today. Known as the Trans-Saharan Seaway, this warm and shallow ocean was a manifestation of globally elevated sea level associated with the rapid break-up of the supercontinent Gondwana in the late Mesozoic. Although it varied in size through time, the Trans-Saharan…
A dense sample of fossil primates (Adapiformes, Notharctidae, Notharctinae) from the Early Eocene Willwood Formation, Wyoming
OBJECTIVES: The Willwood Formation of the southern Bighorn Basin, Wyoming is a fluvial rock sequence that spans approximately 3 million years of early Eocene time. It has yielded one the largest collections of fossil mammals in the world including thousands of dentitions of extinct lemur-like primates known as notharctines. In the southern Bighorn Basin, specimens of these primates have been collected on numerous paleontological expeditions and t…
New Cranial and Postcranial Remains of the Once Enigmatic Early Eocene Mammal Wyolestes (Mammalia, Ferae, Hyaenodonta) from North America, and Phylogenetic Evidence for its Interordinal Relationships
Wyolestes is an extinct placental mammal from early Eocene (Wasatchian) rocks of North America whose phylogenetic position has been enigmatic for decades. Known from three species with distinct, high-cusped molars, the genus has been difficult to assign to a higher clade within Placentalia in part because it has, until now, been known primarily from dentitions. Here we describe new postcranial material of Wyolestes iglesius; new cranial, dental, …
Evolution and Paleontology Studies (6 obras) · Paleontology (5 obras) · Paleontology (5 obras) · Biology (4 obras) · Anatomy (3 obras) · Anatomy (3 obras) · Evolutionary biology (3 obras) · Geology (3 obras) · Geology (3 obras) · Zoology (3 obras)