Jonathan I Bloch
Biographic Data
| ID | 83676 |
|---|---|
| NAME | Jonathan I Bloch |
| GIVEN NAMES | Jonathan I |
| FAMILY NAME | Bloch |
| SIGNATURE | BLOCH J I |
| AFFILIATIONS | Florida Museum of Natural History |
| ORCID | 0000-0003-1484-6931 |
| VERIFIED | Yes |
| TOTAL WORKS | 24 |
| TOTAL CITATIONS | 237 |
| AUTHOR COUNT | 24 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2001 |
| LATEST PUBLICATION YEAR | 2023 |
| H-INDEX | 9 |
Virtual endocast of late Paleocene Niptomomys (Microsyopidae, Euarchonta) and early primate brain evolution
New fossils, systematics, and biogeography of the oldest known crown primate Teilhardina from the earliest Eocene of Asia, Europe, and North America
Skeletal morphology of the early Paleocene plesiadapiform Torrejonia wilsoni (Euarchonta, Palaechthonidae)
Oldest evidence for grooming claws in euprimates
The evolutionary radiation of plesiadapiforms
Very shortly after the disappearance of the non‐avian dinosaurs, the first mammals that had features similar to those of primates started appearing. These first primitive forms went on to spawn a rich diversity of plesiadapiforms, often referred to as archaic primates. Like many living primates, plesiadapiforms were small arboreal animals that generally ate fruit, insects, and, occasionally, leaves. However, this group lacked several diagnostic f…
Cranial anatomy of Paleogene Micromomyidae and implications for early primate evolution
First virtual endocasts of adapiform primates
Internal carotid arterial canal size and scaling in Euarchonta: Re-assessing implications for arterial patency and phylogenetic relationships in early fossil primates
Primate Origins and Supraordinal Relationships: Morphological Evidence
Quantification of neocortical ratios in stem primates
Extant euprimates (=crown primates) have a characteristically expanded neocortical region of the brain relative to that of other mammals, but the timing of that expansion in their evolutionary history is poorly resolved. Examination of anatomical landmarks on fossil endocasts of Eocene euprimates suggests that significant neocortical expansion relative to contemporaneous mammals was already underway. Here, we provide quantitative estimates of neo…
Morphological Evidence for Primate Origins and Supraordinal Relationships
Hands of early primates
Questions surrounding the origin and early evolution of primates continue to be the subject of debate. Though anatomy of the skull and inferred dietary shifts are often the focus, detailed studies of postcrania and inferred locomotor capabilities can also provide crucial data that advance understanding of transitions in early primate evolution. In particular, the hand skeleton includes characteristics thought to reflect foraging, locomotion, and …
Systematics of Paleogene Micromomyidae (Euarchonta, Primates) from North America
New fossils of the oldest North American euprimate Teilhardina brandti (Omomyidae) from the paleocene–eocene thermal maximum
More than 25 new specimens of Teilhardina brandti , one of the oldest known euprimates, are reported from earliest Eocene strata of the southern Bighorn Basin, Wyoming. The new fossils include the first upper dentitions, a dentary showing the lower dental formula for the first time, and the first postcrania ascribed to T. brandti (tarsals and terminal phalanges). The elongated navicular and long talar neck suggest that T. brandti was an active ar…
Endocasts of Microsyops (Microsyopidae, Primates) and the evolution of the brain in primitive primates
Semicircular canal system in early primates
Intrinsic hand proportions of euarchontans and other mammals: Implications for the locomotor behavior of plesiadapiforms
Primate Origins and Supraordinal Relationships: Morphological Evidence
New Paleocene skeletons and the relationship of plesiadapiforms to crown-clade primates
Plesiadapiforms are central to studies of the origin and evolution of primates and other euarchontan mammals (tree shrews and flying lemurs). We report results from a comprehensive cladistic analysis using cranial, postcranial, and dental evidence including data from recently discovered Paleocene plesiadapiform skeletons ( Ignacius clarkforkensis sp. nov.; Dryomomys szalayi , gen. et sp. nov.), and the most plesiomorphic extant tree shrew, Ptiloc…
Revisiting the adaptive origins of primates (again)
Evolution of pedal grasping in Primates
Cranial anatomy of the Paleocene plesiadapiform Carpolestes simpsoni (Mammalia, Primates) using ultra high-resolution X-ray computed tomography, and the relationships of plesiadapiforms to Euprimates
Grasping Primate Origins
The evolutionary history that led to Eocene-and-later primates of modern aspect (Euprimates) has been uncertain. We describe a skeleton of Paleocene plesiadapiform Carpolestes simpsoni that includes most of the skull and many postcranial bones. Phylogenetic analyses indicate that Carpolestidae are closely related to Euprimates. C. simpsoni had long fingers and an opposable hallux with a nail. It lacked orbital convergence and an ankle specialized…
New basicrania of Paleocene‐Eocene Ignacius: Re‐evaluation of the Plesiadapiform‐Dermopteran link
Plesiadapiformes has long been considered to be an archaic group of Primates. Discovery of a paromomyid plesiadapiform skull and independent analysis of referred postcrania have led investigators to conclude that Plesiadapiformes shares a closer relationship to extant flying lemurs (Dermoptera) than to Primates (= Euprimates of Hoffstetter [1977] Bull Mem Soc Anthropol Paris Ser 13 4:327–346). Despite challenges to this interpretation, the plesia…
Evolution of pedal grasping in Primates
Semicircular canal system in early primates
Intrinsic hand proportions of euarchontans and other mammals: Implications for the locomotor behavior of plesiadapiforms
New fossils of the oldest North American euprimate Teilhardina brandti (Omomyidae) from the paleocene–eocene thermal maximum
More than 25 new specimens of Teilhardina brandti , one of the oldest known euprimates, are reported from earliest Eocene strata of the southern Bighorn Basin, Wyoming. The new fossils include the first upper dentitions, a dentary showing the lower dental formula for the first time, and the first postcrania ascribed to T. brandti (tarsals and terminal phalanges). The elongated navicular and long talar neck suggest that T. brandti was an active ar…
Hands of early primates
Questions surrounding the origin and early evolution of primates continue to be the subject of debate. Though anatomy of the skull and inferred dietary shifts are often the focus, detailed studies of postcrania and inferred locomotor capabilities can also provide crucial data that advance understanding of transitions in early primate evolution. In particular, the hand skeleton includes characteristics thought to reflect foraging, locomotion, and …
Cranial anatomy of the Paleocene plesiadapiform Carpolestes simpsoni (Mammalia, Primates) using ultra high-resolution X-ray computed tomography, and the relationships of plesiadapiforms to Euprimates
New basicrania of Paleocene‐Eocene Ignacius: Re‐evaluation of the Plesiadapiform‐Dermopteran link
Plesiadapiformes has long been considered to be an archaic group of Primates. Discovery of a paromomyid plesiadapiform skull and independent analysis of referred postcrania have led investigators to conclude that Plesiadapiformes shares a closer relationship to extant flying lemurs (Dermoptera) than to Primates (= Euprimates of Hoffstetter [1977] Bull Mem Soc Anthropol Paris Ser 13 4:327–346). Despite challenges to this interpretation, the plesia…
Endocasts of Microsyops (Microsyopidae, Primates) and the evolution of the brain in primitive primates
New fossils, systematics, and biogeography of the oldest known crown primate Teilhardina from the earliest Eocene of Asia, Europe, and North America
Cranial anatomy of Paleogene Micromomyidae and implications for early primate evolution
First virtual endocasts of adapiform primates
Revisiting the adaptive origins of primates (again)
Internal carotid arterial canal size and scaling in Euarchonta: Re-assessing implications for arterial patency and phylogenetic relationships in early fossil primates
Quantification of neocortical ratios in stem primates
Extant euprimates (=crown primates) have a characteristically expanded neocortical region of the brain relative to that of other mammals, but the timing of that expansion in their evolutionary history is poorly resolved. Examination of anatomical landmarks on fossil endocasts of Eocene euprimates suggests that significant neocortical expansion relative to contemporaneous mammals was already underway. Here, we provide quantitative estimates of neo…
Systematics of Paleogene Micromomyidae (Euarchonta, Primates) from North America
Skeletal morphology of the early Paleocene plesiadapiform Torrejonia wilsoni (Euarchonta, Palaechthonidae)
Oldest evidence for grooming claws in euprimates
Virtual endocast of late Paleocene Niptomomys (Microsyopidae, Euarchonta) and early primate brain evolution
New basicrania of Paleocene‐Eocene Ignacius: Re‐evaluation of the Plesiadapiform‐Dermopteran link
Plesiadapiformes has long been considered to be an archaic group of Primates. Discovery of a paromomyid plesiadapiform skull and independent analysis of referred postcrania have led investigators to conclude that Plesiadapiformes shares a closer relationship to extant flying lemurs (Dermoptera) than to Primates (= Euprimates of Hoffstetter [1977] Bull Mem Soc Anthropol Paris Ser 13 4:327–346). Despite challenges to this interpretation, the plesia…
Grasping Primate Origins
The evolutionary history that led to Eocene-and-later primates of modern aspect (Euprimates) has been uncertain. We describe a skeleton of Paleocene plesiadapiform Carpolestes simpsoni that includes most of the skull and many postcranial bones. Phylogenetic analyses indicate that Carpolestidae are closely related to Euprimates. C. simpsoni had long fingers and an opposable hallux with a nail. It lacked orbital convergence and an ankle specialized…
Cranial anatomy of the Paleocene plesiadapiform Carpolestes simpsoni (Mammalia, Primates) using ultra high-resolution X-ray computed tomography, and the relationships of plesiadapiforms to Euprimates
Primate Origins and Supraordinal Relationships: Morphological Evidence
New Paleocene skeletons and the relationship of plesiadapiforms to crown-clade primates
Plesiadapiforms are central to studies of the origin and evolution of primates and other euarchontan mammals (tree shrews and flying lemurs). We report results from a comprehensive cladistic analysis using cranial, postcranial, and dental evidence including data from recently discovered Paleocene plesiadapiform skeletons ( Ignacius clarkforkensis sp. nov.; Dryomomys szalayi , gen. et sp. nov.), and the most plesiomorphic extant tree shrew, Ptiloc…
Revisiting the adaptive origins of primates (again)
Evolution of pedal grasping in Primates
Intrinsic hand proportions of euarchontans and other mammals: Implications for the locomotor behavior of plesiadapiforms
Semicircular canal system in early primates
Endocasts of Microsyops (Microsyopidae, Primates) and the evolution of the brain in primitive primates
New fossils of the oldest North American euprimate Teilhardina brandti (Omomyidae) from the paleocene–eocene thermal maximum
More than 25 new specimens of Teilhardina brandti , one of the oldest known euprimates, are reported from earliest Eocene strata of the southern Bighorn Basin, Wyoming. The new fossils include the first upper dentitions, a dentary showing the lower dental formula for the first time, and the first postcrania ascribed to T. brandti (tarsals and terminal phalanges). The elongated navicular and long talar neck suggest that T. brandti was an active ar…
Morphological Evidence for Primate Origins and Supraordinal Relationships
Hands of early primates
Questions surrounding the origin and early evolution of primates continue to be the subject of debate. Though anatomy of the skull and inferred dietary shifts are often the focus, detailed studies of postcrania and inferred locomotor capabilities can also provide crucial data that advance understanding of transitions in early primate evolution. In particular, the hand skeleton includes characteristics thought to reflect foraging, locomotion, and …
Systematics of Paleogene Micromomyidae (Euarchonta, Primates) from North America
Primate Origins and Supraordinal Relationships: Morphological Evidence
Quantification of neocortical ratios in stem primates
Extant euprimates (=crown primates) have a characteristically expanded neocortical region of the brain relative to that of other mammals, but the timing of that expansion in their evolutionary history is poorly resolved. Examination of anatomical landmarks on fossil endocasts of Eocene euprimates suggests that significant neocortical expansion relative to contemporaneous mammals was already underway. Here, we provide quantitative estimates of neo…
Cranial anatomy of Paleogene Micromomyidae and implications for early primate evolution
First virtual endocasts of adapiform primates
Internal carotid arterial canal size and scaling in Euarchonta: Re-assessing implications for arterial patency and phylogenetic relationships in early fossil primates
The evolutionary radiation of plesiadapiforms
Very shortly after the disappearance of the non‐avian dinosaurs, the first mammals that had features similar to those of primates started appearing. These first primitive forms went on to spawn a rich diversity of plesiadapiforms, often referred to as archaic primates. Like many living primates, plesiadapiforms were small arboreal animals that generally ate fruit, insects, and, occasionally, leaves. However, this group lacked several diagnostic f…
Oldest evidence for grooming claws in euprimates
New fossils, systematics, and biogeography of the oldest known crown primate Teilhardina from the earliest Eocene of Asia, Europe, and North America
Skeletal morphology of the early Paleocene plesiadapiform Torrejonia wilsoni (Euarchonta, Palaechthonidae)
Virtual endocast of late Paleocene Niptomomys (Microsyopidae, Euarchonta) and early primate brain evolution
Biology (24 works) · Primate Behavior and Ecology (22 works) · Paleontology (19 works) · Paleontology (17 works) · Evolutionary biology (16 works) · Primate (16 works) · Evolution and Paleontology Studies (15 works) · Anatomy (14 works) · Amphibian and Reptile Biology (13 works) · Anatomy (13 works)