Results 51 to 60 of about 231 (159)
Three-dimensionally preserved appendages of the early Cambrian trilobite Yunnanocephalus yunnanensis [PDF]
PeerJAdvances in micro-computed tomography have brought new insights into the non-biomineralized three-dimensional morphologies of various euarthropods from the Chengjiang biota.
Luis Collantes +5 more
doaj +2 more sources
Ordovician paleobiogeography of the Suborder Cheirurina (Trilobita)
Palaeogeography, Palaeoclimatology, PalaeoecologyAllison Daley +2 more
exaly +2 more sources
Geologica Acta, 2003 The biostratigraphic significance of the latest Cambrian-earliest Ordovician trilobite agnostoids from northwestern Argentina is summarized. A characterization of the faunas recognized below and above the Cambrian-Ordovician boundary is presented on the ...
M.F. Tortello
doaj +1 more source
Notes on the Lines of Descent of Lower Winged Insects
, 1920 Psyche: A Journal of Entomology, Volume 27, Issue 5, Page 116-127, 1920.
G. C. Crampton
wiley +1 more source
Вісник Київського національного університету імені Тараса Шевченка. Серія ГеологіяДана характеристика експозиції типу Arthropoda в Геологічному музеї Київського Національного Університету імені Тараса Шевченка, перераховані систематичні групи в колекціях музею. Вказані особливості саме нашої експозиції членистоногих.
В. Нестеровський +1 more
doaj
Publicación Electrónica de la Asociación Paleontológica ArgentinaThis paper provides a list of all named species in the family Olenidae, along with their geographic and stratigraphic records. It also discusses each of the valid genera in the family and describes the composition of the entire group and its subfamilies
Daniela Soledad Monti
doaj +1 more source
Revista Mexicana de Ciencias Geológicas, 2019 Se describe una especie nueva del Género Griffthides Portlock, 1843, de la Familia Proetidae, de la Formación Ixtaltepec (Pensilvánico), de la región de Nochixtlán, Oaxaca en la parte centromeridional de México y se discute su situación taxonómica ...
Alejandro Morón-Ríos +1 more
doaj
A revision of the first Asteropyginae (Trilobita; Devonian)
Geobios, 2014 Abstract A recent cladistic analysis of the Asteropyginae led to the recognition of the genus Minicryphaeus as one of the most ancestral of this subfamily. A new species, M. giganteus, is described here from the Ihandar Formation (Pragian, Lower Devonian) of Jbel El Mrakib, southern part of the Mader Basin (Morocco).
Bignon, Arnaud Marcel Jacques +2 more
openaire +2 more sources
Fósseis do Devoniano de Goiás, Brasil (Sub-bacia Alto Garças, Bacia do Paraná)
Papéis Avulsos de ZoologiaRESUMO O registro fóssil do Devoniano do estado de Goiás (Sub-bacia Alto Garças, Bacia do Paraná) é ocorrente nos arredores de diversas cidades como Amorinópolis, Iporá, Caiapônia, Rio Verde e Doverlândia. Contudo, os fósseis encontrados em Goiás são, em
Fábio Augusto Carbonaro +1 more
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The evolution of exoskeleton moulting in Trilobita
, 2019 Moulting is the process of replacing an exoskeleton. The exoskeleton provides protection but must be periodically moulted for growth, development, and repair. Moulting is therefore intrinsic to ontogeny, but is risky and energetically-expensive, meaning the morphology and behaviours of an animal are also important. Ecdysozoa (e.g.
openaire +2 more sources