Results 81 to 90 of about 342 (179)

Graptolite Taxonomy and Classification

Bulletin of the Geological Society of Denmark, 1987
Graptolithina comprises chiefly six orders. Among them Graptoloidea and a part of Dendroidea known as Graptodendroids are planktonic in mode of life. Graptoloidea consists of three suborders namely Axono­lipa, Axonocrypta and Axonophora. The families Dendrograptidae-Anisograptidae-Tetragraptidae and Didymograptidae-Isograptidae-Cardiograptidae ...
openaire   +1 more source

Raman Thermal Maturity of Coal and Type II Kerogen Based on Surface-Enhanced Raman Spectroscopy (SERS). [PDF]

ACS Omega, 2021
Jin Y, Wu S, Gao L, Jiang C, Meng F, Tang Y.   +5 more
europepmc   +1 more source

GRAPTOLITES OF NORTH AMERICA

, 1947
Mode of access: Internet.
openaire   +2 more sources

Changes in palaeoclimate and palaeoenvironment in the Upper Yangtze area (South China) during the Ordovician-Silurian transition. [PDF]

Sci Rep, 2022
Men X, Mou C, Ge X.
europepmc   +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

Characteristics and significance of hydrocarbon-forming organisms of Wufeng-Longmaxi formation in Pengshui and its adjacent areas

Youqicang pingjia yu kaifa, 2019
By the observation of the organic microscopic composition and scanning electron microscopy of the whole rock, the black shale of the Upper Ordovician Wufeng-Lower Silurian Longmaxi formation in Pengshui and its adjacent core wells Microscopic observation,
YANG Zhenheng, ZHAI Changbo, DENG Mo, BAO Yunjie, ZHANG Peixian, ZHANG Qingzhen, XIE Xiaomin   +6 more
doaj  

Advanced Cambrian hydroid fossils (Cnidaria: Hydrozoa) extend the medusozoan evolutionary history. [PDF]

Proc Biol Sci, 2021
Song X, Ruthensteiner B, Lyu M, Liu X, Wang J, Han J.   +5 more
europepmc   +1 more source

New fossil assemblages from the Early Ordovician Fezouata Biota. [PDF]

Sci Rep, 2022
Saleh F, Vaucher R, Vidal M, Hariri KE, Laibl L, Daley AC, Gutiérrez-Marco JC, Candela Y, Harper DAT, Ortega-Hernández J, Ma X, Rida A, Vizcaïno D, Lefebvre B.   +13 more
europepmc   +1 more source

A long-term record of early to mid-Paleozoic marine redox change. [PDF]

Sci Adv, 2021
Sperling EA, Melchin MJ, Fraser T, Stockey RG, Farrell UC, Bhajan L, Brunoir TN, Cole DB, Gill BC, Lenz A, Loydell DK, Malinowski J, Miller AJ, Plaza-Torres S, Bock B, Rooney AD, Tecklenburg SA, Vogel JM, Planavsky NJ, Strauss JV.   +19 more
europepmc   +1 more source

Different controls on the Hg spikes linked the two pulses of the Late Ordovician mass extinction in South China. [PDF]

Sci Rep, 2022
Qiu Z, Wei H, Tian L, Corso JD, Zhang J, Zou C.   +5 more
europepmc   +1 more source