Abnormal trilobites from the Silurian and Devonian of Europe
Acta Palaeontologica PolonicaMalformed trilobites have been documented in deposits ranging from the Cambrian to the Permian. Continued examination of novel malformed specimens provides insight into how trilobites recovered from injuries, experienced genetic abnormalities, and ...
Russell D.C. Bicknell +3 more
doaj +1 more source
Qualitative Analysis of College Students' Ideas about the Earth: Interviews and Open-Ended Questionnaires [PDF]
, 2005 NOTE: This is a large file, 165.8 mb in size! This article describes a study in which students' conceptual understanding about the Earth was examined. In the study, students enrolled in introductory science courses at four institutions, completed open ...
Julie Dahl +4 more
core +1 more source
Why did the UV-A-induced photoluminescent blue–green glow in trilobite eyes and exoskeletons not cause problems for trilobites? [PDF]
PeerJ, 2015 The calcitic lenses in the eyes of Palaeozoic trilobites are unique in the animal kingdom, although the use of calcite would have conveyed great advantages for vision in aquatic systems.
Brigitte Schoenemann +2 more
doaj +2 more sources
Geologic quadrangle map no. 47 [PDF]
, 1978 Process Steps: 1. Either: a) a Portable Document Format (PDF) version of the map provided the Bureau of Economic Geology, University of Texas at Austin was converted from pdf to Tagged Image File Format (TIFF) or b) a paper map was scanned and saved in ...
Barnes, Virgil E. (Virgil Everett), 1903-1998
core +1 more source
, 2011 The Cambrian rocks of Wales mostly lie within the Avalon composite terrane, apart from a small area of Cambrian rocks of the Monian composite terrane that is discussed in Chapter 9.
Molyneux, S.G., Rushton, A.W.A.
core
Trilobites, their traces and associated sedimentary structures as indicators of the Cambrian palaeoenvironment of the Ociesęki Range (Holy Cross Mountains, Poland) [PDF]
, 2013 Enrolled specimens of trilobite species Strenuella polonica, partly preserved within their escape structures and burrows from the Cambrian Series 2 Ociesęki Sandstone Formation, are described. The specimens are interpreted as buried during storm episodes.
Stachacz, Michał
core +1 more source
Linguloidean brachiopods from the Lower Ordovician (Tremadocian) of northwestern Argentina [PDF]
, 2015 The new obolid Torobolus subplanus gen. et sp. nov., from the lower Temadocian Devendeus Formation, the new species Libecoviella tilcarensis and Leptembolon argentinum, and Ectenoglossa sp.
Benedetto, Juan Luis Arnaldo +1 more
core
Palaeoscolecids from the early Cambrian Guanshan biota, Yunnan Province, China
Papers in Palaeontology, Volume 12, Issue 1, January/February 2026.Abstract Palaeoscolecidomorphs (Palaeoscolecida and Cricocosmiidae) are widespread early Palaeozoic worms crucial to understanding the early evolution of Ecdysozoa. They are well known from the early–middle Cambrian of the Yangtze Platform of South China, but research has disproportionately focused on the well‐known Cambrian Stage 3 Chengjiang biota of
Xiaomei Shi +3 more
wiley +1 more source
Ancestral patterning of tergite formation in a centipede suggests derived mode of trunk segmentation in trilobites. [PDF]
PLoS ONE, 2012 Trilobites have a rich and abundant fossil record, but little is known about the intrinsic mechanisms that orchestrate their body organization. To date, there is disagreement regarding the correspondence, or lack thereof, of the segmental units that ...
Javier Ortega-Hernández, Carlo Brena
doaj +1 more source
Aspects of the taphonomy of the Cambrian Explosion in North Greenland [PDF]
, 2017 This thesis describes and elucidates the taphonomic pathways responsible for the exceptional preservation of some of the most common elements of the Sirius Passet Lagerstätte (early Cambrian), North Greenland.
STRANG, KATIE,MARGARET
core