Papers in Palaeontology, Volume 7, Issue 2, Page 985-1002, May 2021., 2021 Abstract Trilobites offer almost unparalleled insight into the growth and development of fossil ecdysozoans. Here I use newly collected material of Elrathia kingii (Meek) to estimate growth rates and describe shape change over the ontogeny of E. kingii.
Melanie J. Hopkins, Javier Álvaro
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New agnostina (Trilobita) from the Llanvirn (Ordovician) of Spain
Estudios Geologicos, 1985 Se estudian los trilobites agnóstidos procedentes de nueve localidades, siete de ellas nuevas para estas faunas, situadas en las pizarras del Llanvirn inferior de la parte meridional de la Zona Centroibérica (Montes de Toledo, Villuercas y región de ...
I. Rábano, H. Pek, J. Vaněk
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Die Gattung Erratencrinurus Krueger, 1971 (Trilobita; Ordovizium) aus baltoskandischen Geschieben [PDF]
Fossil Record, 2004 Aus der mittel- bis oberordovizischen Trilobitenfamilie Encrinuridae, die in Baltoskandia durch die Untergattungen Erratencrinurus und Celtencrinurus repräsentiert wird, werden achtzehn Arten beschrieben, darunter die vier neuen Arten Erratencrinurus (E.)
H.-H. Krueger
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Die Gattung Erratencrinurus Krueger, 1971 (Trilobita; Ordovizium) aus baltoskandischen Geschieben [PDF]
Fossil Record, 2004 Aus der mittel- bis oberordovizischen Trilobitenfamilie Encrinuridae, die in Baltoskandia durch die Untergattungen Erratencrinurus und Celtencrinurus repräsentiert wird, werden achtzehn Arten beschrieben, darunter die vier neuen Arten Erratencrinurus (E.)
H.-H. Krueger
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A new Late Ordovician bubble-headed trilobite species from South West Wales and its implications for biostratigraphy [PDF]
Acta Palaeontologica PolonicaA new species of bubble-headed trilobite, Staurocephalus oliveae sp. nov., is described from 250 specimens collected from a recently discovered locality in the Sholeshook Limestone Formation (upper Katian, Upper Ordovician; Ashgill, Cautleyan Zone 1 ...
MANUS G. LEIDI +3 more
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Hirnantia sagittifera (Brachiopoda) and Mucronaspis mucronata s.l. (Trilobita) in the Upper Ordovician of the East Baltic: taxonomy and distribution [PDF]
Estonian Journal of Earth Sciences, 2012 The brachiopod Hirnantia sagittifera (M’Coy) and trilobite morphs of the genus Mucronaspis from the topmost Ordovician Porkuni Stage of the central East Baltic are described and compared with those from the Hirnantian Stage of other regions.
Linda Hints +2 more
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Larvae and relationships of the Calymenina (Trilobita)
Journal of Paleontology, 1990 Up to four discrete protaspid larval stages are described for calymenid trilobites of Ordovician to Devonian age. The earliest growth stages are nonadult-like planktonic protaspides; later protaspides are adult-like and benthonic. In contrast, the related homalonotid trilobites apparently lack planktonic protaspides, but have up to two large benthonic ...
Chatterton, B +3 more
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Shelly fossils from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia [PDF]
Acta Palaeontologica Polonica, 2019 The lower Cambrian (Series 2) White Point Conglomerate (WPC) on Kangaroo Island, South Australia contains exotic clasts representing a diverse array of lithologies, including metamorphics, chert, sandstone, and abundant carbonates, notably archaeocyath ...
Marissa J. Betts +5 more
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Metacryphaeus rotundatus, um novo elemento da fauna de trilobites calmoniidae (phacopida), da formação Ponta Grossa (devoniano), bacia do Paraná, Brasil [PDF]
Geologia USP. Série Científica, 2008 Trilobites Calmoniidae (Delo, 1935) constituem o grupo de Phacopida mais abundante e diversificado do registro fóssil da Formação Ponta Grossa, Devoniano, Sub-bacia Apucarana. Embora conhecidos desde o início do século passado, o estudo dos trilobites da
Sabrina Pereira Soares +2 more
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(2833) Proposal to conserve the name Phalacroma (Dinophysales: Dinophyceae)
, 2021 TAXON, Volume 70, Issue 5, Page 1127-1128, October 2021.
Fernando Gómez
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