Results 91 to 100 of about 58,997 (247)

The dental plate on bichir pectoral fins: A unique dermal skeletal element bearing individual odontodes with tooth‐like replacement

Journal of Anatomy, EarlyView.
Pectoral fins of bichirs encompass the so‐called dental plates – unique dermal skeletal elements with individual odontodes identical to the oral teeth. Abstract The dermal skeleton appeared early in vertebrate evolution in the form of mineralized skin denticles composed of tooth‐like units—odontodes.
Tomáš Suchánek, Ann Huysseune, Robert Cerny   +2 more
wiley   +1 more source

First occurrences of Trionychidae (Testudines, Cryptodira) from the Miocene of Poland: Detailed cranial anatomy and biogeographic implications

Journal of Anatomy, EarlyView.
Fossil finds from three Middle Miocene sites in Poland reveal the northernmost known presence of trionychid turtles in Europe, tentatively identified as Trionyx cf. vindobonensis, suggesting a warmer climate that supported thermophilic species in Central Europe during this period. Abstract Modern trionychids (Testudines, Cryptodira) have a pan‐tropical
Yohan Pochat‐Cottilloux, Sergi López‐Torres, Milan Chroust, Georgios L. Georgalis, Marcin Górka, Mateusz Tałanda   +5 more
wiley   +1 more source

El Neogen [PDF]

, 1993
The Upper Miocene deposits of the archipelago of Cabrera rest on an irregular Mesozoic surface. Several fàcies associations, Boulders and Gravels, Red Silts and Breccias, Stromatolites, Red Siltstones and Oolites, are defined. They result from a shift from marine cliff-line deposits to restricted and open marine littoral carbonate sedimentation.
Fornós Astó, Joan Josep, Rodriguez-Perea, Antoni   +1 more
openaire  

Pacific neogene stratigraphy

Eos, Transactions American Geophysical Union, 1988
The Fourth International Congress of Pacific Neogene Stratigraphy, was held July 29–31, 1987, at the University of California, Berkeley. This very successful congress was organized by the Regional Committee on Pacific Neogene Stratigraphy (RCPNS) of the International Union of Geological Sciences (IUGS) and the International Geological Correlation ...
John Barron, Alan Beu, Joyce R. Blueford, Kiyotaka Chinzei, Norcutt Hornibrook, James Ingle, Fritz Steininger, Ryuichi Tsuchi   +7 more
openaire   +1 more source

Comparative endocranial anatomy in the crocodylians Leidyosuchus canadensis and Stangerochampsa mccabei from the upper Cretaceous of Alberta, Canada

Journal of Anatomy, EarlyView.
Leidyosuchus canadensis and Stangerochampsa mccabei share endocranial features such as posterior projection of a neurovascular canal in the maxilla and a paratympanic sinus system most similar to those of small‐bodied and young extant crocodylians, suggesting that these pedomorphic features may reflect the ancestral crocodylian condition.
G. Donzé, G. Perrichon, P. Vincent, F. Therrien, J. E. Martin   +4 more
wiley   +1 more source

The Role of Gene Flow in the Diversification of the Monkey Treefrog Complex Across the South American Dry Diagonal

Zoologica Scripta, EarlyView.
ABSTRACT Understanding Neotropical megadiversity remains challenging due to fundamental taxonomic issues, including identifying and describing cryptic species and their distribution, and the limited knowledge of key factors driving biological diversification. Such challenges are especially prominent in diverse clades with high levels of cryptic species,
Felipe Camurugi, Vinícius A. São Pedro, Felipe Magalhães, Marcelo Gehara, Eliana F. Oliveira, Gabriel C. Costa, Frank T. Burbrink, Edward A. Myers, Guarino R. Colli, Miguel T. Rodrigues, Adrian A. Garda   +10 more
wiley   +1 more source

On Prophoca and Leptophoca (Pinnipedia, Phocidae) from the Miocene of the North Atlantic realm : redescription, phylogenetic affinities and paleobiogeographic implications [PDF]

, 2016
Background: Prophoca and Leptophoca represent the oldest known genera of phocine seals, dating from the latest early to middle Miocene. Originally, Prophoca rousseaui and Prophoca proxima were described based on fragmentary remains from the Miocene of ...
Dewaele, Leonard, Lambert, Olivier, Louwye, Stephen   +2 more
core   +4 more sources

The Neogene Period

, 2020
The Neogene oceans and continents were mosaicked to form a paleogeography similar to today and exposed to the warm conditions of the mid Neogene to the cooling toward the glacial Quaternary. Antarctic ice sheets stabilized, then Northern Hemisphere ice sheets grew and thickened. Tectonics continued to shape the continents and ocean floor.
I. Raffi, B. S. wade, H. Paelike
openaire   +3 more sources

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

, 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., Kaminski, M.A., Merrill, D., Müller, C.M., Nederbragt, A.J., Scherer, R.P., Shibuya, H., Shyu, J.-P.   +7 more
core   +1 more source

Reshaping the understanding of the paratethys using paleogeographic reconstructions and geochronology studies [PDF]

Geološki Anali Balkanskoga Poluostrva
The history of the Paratethys and its inhabiting organisms was profoundly influenced by its connections with the Global Ocean. As the sea‐straits linking Paratethys with the ocean expanded, they integrated the Paratethys with the global ocean, causing ...
Popov Sergey V., Patina Irina S., Palcu Dan V.   +2 more
doaj   +1 more source