Results 91 to 100 of about 1,858 (206)

Upper Ordovician graptolites and biostratigraphy of the Rostanga 1 core, Scania, S. Sweden

, 2002
drilling at Rostanga in 1997, referred to as Rostanga 1, penetrated a significant portion of the Upper Ordovician-Lower Silurian succession in this classical Lower Palaeozoic outcrop area in W-central Scania.
Pålsson, Christian
core   +1 more source

Silurian Graptolites from Eastern Gaspé, Quebec

, 1975
Eight species of graptolites not recognized in a previous study (Lenz 1972) are described from the Gaspé region. These comprise Monograptus bouceki, of Late Pridolian age from the Roncel-les Formation; M. cf. M. galaensis and M.
Alfred Lenz
core   +1 more source

Double-helical macrostructure aids the passive movement of extinctive graptolites (Dicellograptus) revealed by CFD simulation

Swiss Journal of Palaeontology
Understanding how marine organisms move in the water column is critical for comprehending their palaeoecology and palaeobiogeography. However, interpreting the locomotion of extinct invertebrates can be problematic and difficult because of the lack of ...
Shijia Gao, Jingqiang Tan, Wenhui Wang
doaj   +1 more source

The Liexi fauna: a new Lagerstätte from the Lower Ordovician of South China. [PDF]

Proc Biol Sci, 2022
Fang X, Mao Y, Liu Q, Yuan W, Chen Z, Wu R, Li L, Zhang Y, Ma J, Wang W, Zhan R, Peng S, Zhang Y, Huang D.   +13 more
europepmc   +1 more source

Pridoli graptolites from northern Xinjiang, Northwest China

, 1998
Integration of graptolite dates obtained from two sections in northern Xinjiang, Northwest China, permits the recognition of one Pridoli biostratigraphic zone, the Monograptus bouceki Biozone.
Y -n Ni, X Chen, A C Lenz
core   +1 more source

L'ontogenese des graptolites

Bulletin de la Société Géologique de France, 1959
Abstract Traces the ontogenetic development of graptolites, reporting details of the various growth stages of a graptolite colony.
openaire   +1 more source

Upper Homerian (Wenlock, Silurian) graptolites and graptolite biostratigraphy, Arctic Archipelago, Canada

, 1995
Integration of graptolite data obtained from isolated and flattened material from Arctic Canada permits the recognition of three upper Homerian biostratigraphic zones.
Alfred C. Lenz
core   +1 more source

Population Variation in Fossil Graptolites: a Quantitative Study Based on Single Species Assemblages [PDF]

, 2014
There are several different types of variation in populations of fossil organisms. These include intra-specific (population) variation, evolutionary variation (specimens on a slab accumulating over thousands of years), and preservational variation.
Mazur, Elliott Matthias
core   +1 more source

Graptolites et Chitinozoaires Siluriens de la vallée de la Burdinale, Massif du Brabant, Belgique [PDF]

, 1979
Assemblages of graptolites and chitinozoans are descnbed respectively by B. RICKARDS and J. VERNIERS from Silurian deposits which were studied in the Burdinale valley by J. VERNIERS (Ph. D. dissertation, 1976).
Rickards, B., Verniers, J.
core  

Pristiograptus (Graptoloidea) from the perneri - lundgreni biozones (Silurian) of Lithuania

Carnets de Géologie, 2003
Two new forms of Pristiograptus dubius, here designated as varieties "A" and "B", are described and figured. Both were found in core samples representing the perneri through lundgreni biozones of the Wenlock epoch.
Radzevičius Sigitas
doaj