Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Christopher R. C. Paul"'
Autor:
Christopher R. C. Paul, Ursula Toom
Publikováno v:
Estonian Journal of Earth Sciences, Vol 73, Iss 1, Pp 57-0 (2024)
Externí odkaz:
https://doaj.org/article/6b9b89235c6c44049daf66c53c428104
Autor:
Christopher R. C. Paul, Ursula Toom
Publikováno v:
Estonian Journal of Earth Sciences, Vol 70, Iss 3, Pp 165-181 (2021)
All previous descriptions and interpretations of thecal plating in Cystoblastus Volborth depict a closed infralateral circlet, whereas actual specimens have that plate circlet open in three places. Cystoblastus is redescribed using Estonian specimens
Externí odkaz:
https://doaj.org/article/ebe7e6ded10d45e7b1bbae965aa0dc00
Autor:
Christopher R. C. Paul
Publikováno v:
Acta Palaeontologica Polonica, Vol 66, Iss 1, Pp 41-62 (2021)
“Pan-dichoporites” (new informal term) is proposed to unite Cambrian blastozoans, such as Cambrocrinus, Ridersia, and Sanducystis, glyptocystitoid and hemicosmitoid rhombiferans, coronates, blastoids, and Lysocystites. Pan-dichoporite ambulacra h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2d5a265bc84a291907a7688b2e5bad3
http://www.app.pan.pl/archive/published/app66/app008252020.pdf
http://www.app.pan.pl/archive/published/app66/app008252020.pdf
Publikováno v:
Journal of Paleontology. 94:1089-1102
Lovén's Law described the position of larger basicoronal ambulacral plates in echinoids. The smaller basicoronal plates form first in ontogeny. We restate Lovén's Law to describe the position of first ambulacral plates using Carpenter's ambulacra a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::236b241a8cd3b6ed7b83dc95f76084cb
https://doi.org/10.1017/jpa.2020.31
https://doi.org/10.1017/jpa.2020.31
Publikováno v:
Journal of Paleontology. 93:822-826
Barrande erected the genus Aristocystites, type A. bohemicus Barrande, in 1887. He listed other questionable species, including “A.? subcylindricus var. de bohemicus.” Aristocystites subcylindricus has not been accepted apart from Bather who in 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa07ae53288b3da708540160fca2a606
https://doi.org/10.1017/jpa.2019.5
https://doi.org/10.1017/jpa.2019.5
Publikováno v:
Geological Journal. 54:529-536
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46e9cca71d035aee684cb73f3657cdd0
https://doi.org/10.1002/gj.3203
https://doi.org/10.1002/gj.3203
Autor:
Arthur J. Boucot, Renbin Zhan, Wattana Tansathien, Christopher R. C. Paul, Stephen K. Donovan
Publikováno v:
Geological Magazine. 156:147-171
The Middle Ordovician (Darriwilian) echinoderm fauna of Bang Mueang Song Tho, western Thailand (Pha Phum group, Bo Ngam Formation(?)), includes rare thecae, and common thecal ossicles and columnals, and is dominated by ‘cystoids’. Cheirocrinid gl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::525e09e0462cb5e1c5c4f1e8972f3711
https://doi.org/10.1017/s0016756817000826
https://doi.org/10.1017/s0016756817000826
Autor:
Christopher R. C. Paul
Publikováno v:
Journal of Paleontology. 91:582-603
The extraxial axial theory is used to investigate homology of ambulacral and oral plating because it predicts terminal branching and terminal addition of plates in the axial skeleton, although exceptions to the former may occur in some Paleozoic echi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e51e5392f6abab5b61cf4a23b50f5df
https://doi.org/10.1017/jpa.2016.151
https://doi.org/10.1017/jpa.2016.151
Publikováno v:
Geological Journal. 52:1-13
Ateleocystites? lansae sp. nov. is characterized by an elongate body with short spines that taper relatively rapidly. It has granular plate ornament adorally in addition to cuesta-like ridges. Ateleocystites? lansae occurs commonly in a 5-cm-thick fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5df3c4cc1aa844120430c788cc77e8e7
https://doi.org/10.1002/gj.2712
https://doi.org/10.1002/gj.2712
Publikováno v:
Proceedings of the Geologists' Association. 126:119-129
A small polished slab of ‘Marston Marble’, Lower Jurassic, from Marston Magna, Somerset, UK, contains several ammonite specimens with pieces of shell missing from the body chamber immediately in front of the last suture. The damage is visible in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e347324faa4db6bd37661ccbe1f7b05d
https://doi.org/10.1016/j.pgeola.2014.10.006
https://doi.org/10.1016/j.pgeola.2014.10.006