Results 51 to 60 of about 72,304 (290)

Systematic lithostratigraphy of the Neogene succession exposed in central parts of Hawke’s Bay Basin, eastern North Island, New Zealand [PDF]

open access: yes, 2007
This report presents a systematic lithostratigraphy for the Neogene (Miocene–Recent) sedimentary succession in central parts of Hawke’s Bay Basin in eastern North Island, New Zealand.
Bland, Kyle J.   +2 more
core   +1 more source

Morphological variation in atlas and axis of Neotropical spiny rats (Rodentia, Echimyidae)

open access: yesThe Anatomical Record, EarlyView.
Abstract The unique morphologies of the first two cervical vertebrae, the atlas and axis, represent a significant innovation in mammalian evolution. These structures support the weight of the head and enable intricate movements of the head and neck.
Thomas Furtado da Silva Netto   +3 more
wiley   +1 more source

Tertiary conglomerates of the North border of Sierra de Cameros

open access: yesCuadernos de Investigación Geográfica, 2013
The present paper is a study of the age of the siliceous conglomerates not consolidates situated in the Northern Sierra de Cameros. The age of these rocks are: Upper Oligocene (Chattian or older) the oldest; middle Miocene (Vindobonian) the intermediate;
Félix Pérez Lorente   +2 more
doaj   +1 more source

Biostratigraphic and magnetostratigraphic synthesis of the Celebes and Sulu Seas, Leg 124 [PDF]

open access: yes, 1991
During ODP Leg 124, late middle Eocene to Quaternary sediment sequences were recovered from 13 holes drilled at five sites in the Celebes and Sulu basins. Paleomagnetic measurements and biostratigraphic studies using calcareous nannofossils, planktonic
Hsu, V.   +7 more
core   +1 more source

The cranial, mandibular, and hyoid anatomy of softshell turtles (Trionychidae): A revised character list for phylogenetic analysis

open access: yesThe Anatomical Record, EarlyView.
Abstract Softshell turtles (Pan‐Trionychidae) are an early branching clade of hidden‐necked turtles (Cryptodira) with a rich fossil record extending back to the Early Cretaceous. The evolutionary history of softshell turtles is still unresolved because of their conservative morphology combined with high levels of polymorphism related to morphological ...
Léa C. Girard, Walter G. Joyce
wiley   +1 more source

History of oceanic front development in the New Zealand sector of the Southern Ocean during the Cenozoic--a synthesis [PDF]

open access: yes, 2001
The New Zealand sector of the Southern Ocean (NZSSO) has opened about the Indian-Pacific spreading ridge throughout the Cenozoic. Today the NZSSO is characterised by broad zonal belts of antarctic (cold), subantarctic (cool), and subtropical (warm ...
Abelmann A.   +60 more
core   +2 more sources

Patterns of spinal motion, kinematic spaces and the land‐to‐sea transition in carnivorans

open access: yesThe Anatomical Record, EarlyView.
Using 3D reconstructions, we quantify intervertebral joint mobility to investigate how cervical, thoracic, and lumbar vertebral regions evolved distinct kinematic roles in pinnipeds. The findings reveal lineage‐specific adaptations for swimming and highlight the functional significance of vertebral joint flexibility in ecological transitions.
Juan Miguel Esteban   +3 more
wiley   +1 more source

The Middle Miocene climate as modelled in an atmosphere-ocean-biosphere model [PDF]

open access: yesClimate of the Past, 2011
We present simulations with a coupled atmosphere-ocean-biosphere model for the Middle Miocene 15 million years ago. The model is insofar more consistent than previous models because it captures the essential interactions between ocean and atmosphere and ...
M. Krapp, J. H. Jungclaus
doaj   +1 more source

Kangaroo morphometrics: how Miocene kangaroos can inform us about palaeoenvironments and how giant Pleistocene kangaroos managed to locomote [PDF]

open access: yes, 2015
Kangaroos are known today for their spectacular hopping locomotion, but kangaroo diversity in the past tells a different story. Some kinds of extinct kangaroos (sthenurines) grew so large that hopping would seem to be unlikely.
Janis, Christine Marie
core  

Spalax denizliensis sp. nov. (Spalacidae, Rodentia) from an early Pleistocene-aged locality in the Denizli Basin (southwestern Turkey) [PDF]

open access: yes, 2018
It is thought that Spalacidae (Rodentia, Mammalia) originated in Anatolia. They are widespread among Neogene-aged faunas in Anatolia and they are used as zonal fossils because of their strong evolutionary dynamics. Only one fossil species (S.
Erten, Hüseyin
core   +2 more sources

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