Brian D. E. Chatterton, Gregory D. Edgecombe, N. Emilio Vaccari, Beatriz G. Waisfeld,
... compared with the larval stages of some other Proetida, including other telephinids. New findings reveal 1) a ... understanding the systematics and life cycles of the Proetida. Benthic/pelagic transitions identify four life history patterns among the the Proetida. The best larval synapomorphy for the Proetida is the distinctive metaprotaspid larval type, which is ...
Tópico(s): Marine Biology and Environmental Chemistry
1999 - Cambridge University Press | Journal of Paleontology
... Trilobita, and within the trilobite clades Libristoma, Asaphina, Proetida, Phacopida, and Scutelluina. Blastoid morphology is quantified with ... varies little throughout much of the history of Proetida, a pattern that may suggest major constraints on ... evolution, and that agrees with the perception of Proetida as a morphologically conservative group. Two major patterns ... In Phacopida, Scutelluina, and to some extent in Proetida, morphological diversity decreases along with taxonomic diversity. This ... subphylum Blastozoa, all studied clades of trilobites except Proetida show maximal morphological diversity in the Mid–Late ...
Tópico(s): Marine and coastal plant biology
1993 - Cambridge University Press | Paleobiology
Helje Pärnaste, Alexander Popp, R. M. Owens,
The trilobite order Proetida forms a minor but important faunal element within the Ordovician strata of Baltoscandia.This review follows the current systematic, ... within the ranges of about 30 genera of Proetida and over 70 species from the Ordovician successions ... to be considered in explaining the distribution of Proetida in Baltoscandia.
Tópico(s): Geological Formations and Processes Exploration
2009 - Estonian Academy Publishers | Proceedings of the Estonian Academy of Sciences Geology
LethaiaVolume 10, Issue 2 p. 95-105 Proetida—a disorderly order of trilobites JAN BERGSTRÖM, JAN BERGSTRÖM Department of Geology, Sölvegatan 13, S-223 62 Lund, SwedenSearch for more papers by ... inside phyletic lineages defined by other means. The Proetida, as defined by Fortey & Owens 1975, are taken ... and functional criteria seems to indicate that the Proetida fall into at least three groups without close ...
Tópico(s): Plant and Fungal Species Descriptions
1977 - Wiley | Lethaia
James C. Lamsdell, Paul A. Selden,
The monophyly of the order Proetida, the only trilobite group to survive the end-Devonian mass extinction, has been regularly questioned since its erection almost three decades ... 55 taxa, including both traditional members of the Proetida along with a number of other trilobite groups, ... trilobites is rigorously tested for the first time. Proetida is shown to be monophyletic, united by the ...
Tópico(s): Evolution and Paleontology Studies
2014 - Wiley | Lethaia
Richard A. Fortey, Robert M. Owens,
... and which support the concept of the Order Proetida Fortey & Owens, 1975. False phylogenetic relationships are deduced ... 1973), stutzt aber die der Aufstellung der Ordnung Proetida Fortey & Owens 1975 zugrundeliegende Auf-fassung. Unrichtige apriori- ... mais vient a I'appui de I'Ordre Proetida Fortey & Owens 1975. Des distinctions a prior; et ...
Tópico(s): Botany and Plant Ecology Studies
1979 - Wiley | Lethaia
Rudy Lerosey‐Aubril, Thomas A. Hegna, Sébastien Olive,
... only known example of such structures in the Proetida and their youngest occurrence. A taphonomic scenario is ... feeding habits. □Arthropoda, digestive system, ecology, muscle scars, Proetida, Trilobita.
Tópico(s): Evolution and Paleontology Studies
2010 - Wiley | Lethaia
... belonging to genera of three families of the Proetida (Proetidae, Rorringtoniidae and Toernquistiidae) are described from the ...
Tópico(s): Diatoms and Algae Research
2004 - Wiley | Palaeontology
Tópico(s): Paleontology and Evolutionary Biology
1996 - | Palaeontographica Abteilung A
Richard A. Fortey, Robert M. Owens,
... raI group of the Trilob ita -the order Proetida. In this paper we summa r ise the ...
Tópico(s): Marine Biology and Ecology Research
1975 - Wiley | Fossils and strata
... some post-Cambrian groups, such as the orders Proetida and Odontopleurida, are still unclear. Future directions for ...
Tópico(s): Marine Biology and Ecology Research
2019 - Cambridge University Press | Geological Magazine
... trilobites into new niches.The longest-lived group, Proetida, showed the lowest levels of intraspecific variability, which ...
Tópico(s): Paleontology and Stratigraphy of Fossils
2019 - | Palaeontologia Electronica
Produção Nacional
Revisado por pares
Luciane Profs Moutinho, Sara Nascimento, Ana Karina Scomazzon, Valesca Brasil Lemos,
... occurrence of two molds and two fragments of Proetida trilobites. Well preserved Eunicida and Phyllodocida scolecodonts and ...
Tópico(s): Paleontology and Evolutionary Biology
2016 - Elsevier BV | Journal of South American Earth Sciences
... one of the main characters of the Order Proetida was the protaspides having a preglabellar field. The ...
Tópico(s): Geology and Paleoclimatology Research
2011 - Wiley | Lethaia
Stacey Gibb, Brian D. E. Chatterton,
Proetid trilobites are described from three sections in two regions of southern Morocco. The sections are located at Jbel Gara el Zguilma (‘Zguilma’) and a neighboring section (‘near Zguilma’), near Foum Zguid; and at another locality (BD5) in the Ma'der Region, between the villages of bou Dib and Tazoulaït, near the town of Alnif. The trilobites described here are assigned to a proposed new genus, Timsaloproetus, with Cornuproetus (Sculptoproetus) haasi Alberti, 1971 as type species. Timsaloproetus haasi ...
Tópico(s): Marine and environmental studies
2007 - Cambridge University Press | Journal of Paleontology
Maria da Gloria Pires de. Carvalho,
... Falkland. The trilobites belong to three higher taxa: Proetida (the first proetid record in these islands); Homalonotidae, ...
Tópico(s): Marine Biology and Ecology Research
2006 - Wiley | Palaeontology
... steadily acquired early in the ontogeny of the Proetida. Thus we preclude the use of this character ...
Tópico(s): Geology and Paleoclimatology Research
2005 - Institute of Paleobiology | Acta Palaeontologica Polonica
Rudy Lerosey‐Aubril, Raimund Feist,
... superfamily. Moreover, it supports the view that the Proetida is composed of two clades: the Aulacopleuroidea/Bathyuroidea ...
Tópico(s): Marine Biology and Ecology Research
2005 - Cambridge University Press | Journal of Paleontology
... into the Cambrian. The coherence, or otherwise, of Proetida, Asaphida, Corynexochida and the lichid/odontopleurid groups will ...
Tópico(s): Marine Biology and Ecology Research
2001 - Cambridge University Press | Journal of Paleontology
... into the Cambrian. The coherence, or otherwise, of Proetida, Asaphida, Corynexochida and the lichid/odontopleurid groups will ...
Tópico(s): Marine Biology and Ecology Research
2001 - Cambridge University Press | Journal of Paleontology
Brian D. E. Chatterton, Gregory D. Edgecombe, Beatriz G. Waisfeld, N. Emilio Vaccari,
The following new Toernquistiidae from Whiterockian (Llanvirn to lower Caradoc) strata of the Precordillera, western Argentina, are described: Chomatopyge canasi new species, Lasarchopyge benedettoi new genus and species, Lasarchopyge correae new genus and species, Lasarchopyge new species A, and Paratoernquistia sanchezae new genus and species. Phylogenetic analysis suggests that the Toernquistiidae Hupé, 1953 (including Chomatopyge, Lasarchopyge, Mesotaphraspis, Paratoernquistia, and Toernquistia ) ...
Tópico(s): Evolution and Paleontology Studies
1998 - Cambridge University Press | Journal of Paleontology
Tópico(s): Geological formations and processes
1998 - | Palaeontographica Abteilung A
Tópico(s): Geology and Paleoclimatology Research
1997 - | Palaeontographica Abteilung A
Dong‐Chan Lee, Brian D. E. Chatterton,
... the earliest (early Ibexian or Tremadocian) family of Proetida, based on comparisons of hystricurid larvae with younger ...
Tópico(s): Geochemistry and Elemental Analysis
1997 - Cambridge University Press | Journal of Paleontology
Gregory D. Edgecombe, Brian D. E. Chatterton, N. Emilio Vaccari, Beatriz G. Waisfeld,
... the early larval stages of other taxa in Proetida.
Tópico(s): Marine Biology and Environmental Chemistry
1997 - Cambridge University Press | Journal of Paleontology
Tópico(s): Plant Diversity and Evolution
1996 - | Palaeontographica Abteilung A
... Cheirurina, Siluro-Devonian Phacopida and Phacopina, and Devonian Proetida.
Tópico(s): Ecology and Vegetation Dynamics Studies
1993 - Cambridge University Press | Paleobiology
... of the cuticle thickness are characteristic of Order Proetida. Intraspecific variation is related to ontogenetic development, most ...
Tópico(s): Marine and coastal plant biology
1991 - Cambridge University Press | Transactions of the Royal Society of Edinburgh Earth Sciences
Brian D. E. Chatterton, Derek J. Siveter, Gregory D. Edgecombe, Allen S. Hunt,
... to the Phacopina ( Calyptaulax ), Cheirurina ( Physemataspis and Hyrokybe ), Proetida ( Scharyia ), Lichida ( Acanthopyge ), Odontopleurida ( Diacanthaspis ), Corynexochida ( Bathyuriscus ), and ...
Tópico(s): Marine Biology and Environmental Chemistry
1990 - Cambridge University Press | Journal of Paleontology
Margaret J. Campbell, Brian D. E. Chatterton,
... is more likely to be found within the Proetida than the Odontopleurida. Tubercles, a prominent feature of ...
Tópico(s): Plant and Fungal Species Descriptions
2009 - Cambridge University Press | Journal of Paleontology