• Corpus ID: 126839969

Pelmatozoan columnals from the Ordovician of the British Isles

  title={Pelmatozoan columnals from the Ordovician of the British Isles},
  author={Stephen K. Donovan},
A new iocrinid crinoid ( Disparida ) from the 1 Ordovician ( Darriwillian ) of Morocco
Complete, articulated crinoids from the Ordovician peri-Gondwanan margin are rare. Here, we describe a new species, Iocrinus africanus sp. nov., from the Darriwilian-age Taddrist Formation of
Middle Cambrian echinoderm remains from the Henson Gletscher Formation of North Greenland
A Middle Cambrian (Series 3, Stage 5) echinoderm assemblage is described from the uppermost part of the Henson Gletscher Formation based on disarticulated material. This represents the first detailed
Towards a systematic standard approach to describing fossil crinoids, illustrated by the redescription of a Scottish Silurian Pisocrinus de Koninck
Systematic taxonomy requires thoughtful, detailed and structured descriptions of species characters, and essential additional data for effective comparison with other specimens. Crinoid terminology
Some Disparid Crinoids from the Upper Ordovician (Shermanian) Walcott-Rust Quarry of New York
  • J. C. Brower
  • Environmental Science, Geography
    Journal of Paleontology
  • 2008
Abstract Iocrinus trentonensis Walcott, 1883 is characterized by the widest food grooves and the largest covering plates of any of the Walcott-Rust Quarry crinoids, which indicates that the animal
Stem Structure and Evolution in the Earliest Pelmatozoan Echinoderms
Abstract Echinoderm skeletal debris from the Early–Middle Cambrian boundary Micmacca Breccia of Morocco includes the oldest known holomeric columnals. The original calcite of these ossicles is coated
Middle Permian crinoids (Echinodermata, Crinoidea) from Cerros Los Monos, Caborca, Sonora, Mexico and paleogeographic considerations
Crinoid columnals and pluricolumnals assigned to fi ve species, Pentaridica (col.) rothi Moore and Jeffords, Cyclocaudex cf. C. (col.) jucundus Moore and Jeffords, Cyclocaudex cf. C. (col.) costatus
The first Middle Ordovician and Gondwanan record of the cincinnaticrinid crinoid Ohiocrinus byeongseoni n. sp. from South Korea: biostratigraphy, paleobiogeography, and taphonomy
Ohiocrinus byeongseoni n. sp. from the Middle Ordovician (Darriwilian) Jigunsan Formation of South Korea in the Sino-Korean (North China) block is the oldest species of Ohiocrinus of the
Hirnantia Fauna from the Condroz Inlier, Belgium: another case of a relict Ordovician shelly fauna in the Silurian?
Abstract. The end-Ordovician mass extinction, linked to a major glaciation, led to deep changes in Hirnantian–Rhuddanian biotas. The Hirnantia Fauna, the first of two Hirnantian survival