Results 41 to 50 of about 10,365 (254)

Trace fossils from the Buchak Formation (Lutetian, Eocene) of Luhansk Oblast, Ukraine, and their palaeogeographic significance

open access: yesGeo&Bio, 2023
Eleven Fodinichnia, Pascichnia, and Domichnia ichnotaxa (Apectoichnus longissimus (Kelly et Bromley, 1984), cf.Conichnus isp., Gastrochaenolites isp., Gnathichnus isp., Macaronichnus segregatis Clifton et Thompson, 1978,Ophiomorpha nodosa Lundgren, 1891 ...
Vitaly Dernov, Mykola Udovychenko
doaj   +1 more source

Biostratigraphic constraints for a Lutetian age of the Harrersdorf Unit (Rhenodanubian Zone): Implication for basement structure of the northern Vienna Basin (Austria)

open access: yesGeologica Carpathica, 2019
The formations underlying the Neogene infill of the Vienna Basin are still poorly documented. Until now correlation of subsurface lithostratigraphic units with those of the Rhenodanubian nappe system and the Magura nappe system, outcropping at the basin ...
Kranner Matthias   +4 more
doaj   +1 more source

New fossil taxa of Monophlebidae (Sternorrhyncha: Coccoidea) from Baltic amber

open access: yesEuropean Journal of Entomology, 2015
The family Monophlebidae is distributed worldwide and is classified as one of the "archaeococcoid" families. After almost 160 years since Germar & Berendt (1856) described the first and so far only fossil monophlebid species, Monophlebus irregularis, two
Ewa SIMON, Dagmara ŻYŁA
doaj   +1 more source

Hyænodontidæ of the Upper Eocene of California [PDF]

open access: yesProceedings of the National Academy of Sciences, 1933
Since the announcement(1) of the discovery of upper Eocene mammals in the Sespe deposits north of the Simi Valley, California, excavations have been continued in these beds, particularly at Locality 150 C. I. T. Vert. Pale., by field parties of the California Institute.
openaire   +3 more sources

MicroCT reinvestigation of the only articulated fossil anostomid fish reveals synonymy of Arhinolemur Ameghino, 1898 and Megaleporinus Ramirez et al., 2017

open access: yesThe Anatomical Record, EarlyView.
Abstract Arhinolemur scalabrinii† Ameghino, 1898 was originally described as a strepsirrhine primate (Mammalia) but has been recognized as an anostomid fish since 2012. It remains the only extinct anostomid species known from complete cranial material.
Karen M. Panzeri   +8 more
wiley   +1 more source

An Eocene Primate from California [PDF]

open access: yesProceedings of the National Academy of Sciences, 1933
Recognition of a primate in the mammalian assemblage now being recorded from one of the faunal stages of the Sespe, north of the Simi Valley, California, comes with startling abruptness, yet is not wholly unexpected. No fewer than five fragments of jaws, probably representing as many individuals, have been found recently.
openaire   +3 more sources

Oldest well‐preserved euprimate petrosal, from the early Eocene of India (Vastan Lignite Mine, Gujarat)

open access: yesThe Anatomical Record, EarlyView.
Abstract An exquisitely preserved, isolated partial petrosal with associated fragmentary stapes is described from the Vastan Lignite Mine (Gujarat, India), dated to the early Eocene (~54.5 Ma). Several anatomical traits (e.g., large petrosal plate; posterolateral entry of the internal carotid artery to the tympanic cavity; bony tubes surrounding the ...
Mary T. Silcox   +8 more
wiley   +1 more source

Geometric morphometrics of endophytic oviposition traces of Odonata (Eocene, Argentina) [PDF]

open access: yesRoyal Society Open Science, 2020
The insertion of the Odonata ovipositor in the plant tissue generates a scar that surrounds the eggs (trace). In insects, individual egg traces are known to vary in size, but their variation in individual shape is mostly unknown.
Eugenia Romero-Lebrón   +2 more
doaj   +1 more source

Tracing the evolutionary history of the morpho‐anatomy of baculum in primates

open access: yesThe Anatomical Record, EarlyView.
Abstract Animal morphology reflects both evolutionary history and present‐day adaptation. Male mammal copulatory structures such as the baculum (penile bone) are ideal for studying these processes because of their complexity and high interspecific variability. In primates, however, research has focused mostly on baculum length.
Federica Spani   +3 more
wiley   +1 more source

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