Results 61 to 70 of about 468 (168)

New Insight into the Demography History, Evolution, and Phylogeography of Horseshoe Crabs with Special Emphasis on American Species

Diversity
Xiphosurids (Merostomata, Xiphosura) are a group of chelicerates with a rich and complex evolutionary history that is constantly being updated through new discoveries.
José Manuel García-Enríquez, Salima Machkour-M’Rabet, Yann Hénaut, Sophie Calmé, Julia Maria Lesher-Gordillo   +4 more
doaj   +1 more source

Further remarks on the relationship of the Limulidæ (Xiphosura) to the Eurypteridæ and to the Trilobita [PDF]

Annals and Magazine of Natural History, 1872
Volume: 9 ; Start Page: 406 ; End Page ...
openaire   +1 more source

FIG. 2 in The diets of juvenile horseshoe crabs, Tachypleus tridentatus and Carcinoscorpius rotundicauda (Xiphosura), from nursery beaches proposed for conservation in Hong Kong

, 2004
FIG. 2. Average Selection Indexes (Strauss, 1979) for six groups of meiofaunal food items occurring in the guts of the seven juvenile Tachypleus tridentatus from Pak Nai and San Tau. Calculations were based on data pooled from the two sites.
Zhou, H., Morton, Brian
core   +1 more source

On some points in the structure of the Xiphosura, having reference to their relationship with the Eurypterida [PDF]

Annals and Magazine of Natural History
So long since as 1849* Professor M'Coy made the proposition to unite in one tribe of the order Entomostraca the recent and fossil Limulidæ and the extinct species of Pterygotus and Eurypterus .
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Figure 3. A, Bunodes lunula d in Revised systematics of Palaeozoic 'horseshoe crabs' and the myth of monophyletic Xiphosura

, 2012
Figure 3. A, Bunodes lunula d'Eichwald, 1854 from the late Silurian (Ludlow) of Oesel, Estonia. Specimen ELM G1:262:2, clearly showing the partially reduced pre-opercula tergite of somite VII (arrowed) between the downturned carapace and the ...
Lamsdell, James C.
core   +1 more source

Limulus polyphemus Trinity assembly

, 2014
Limulus polyphemus (Chelicerata: Xiphosura) Trinity ...
González, Vanessa L., Sharma, Prashant P., Stefan T. Kaluziak (488332), Alicia R. Pérez-Porro (3249093), Gustavo Hormiga (3249087), Kaluziak, Stefan T., Gonzalo Giribet (121315), Pérez-Porro, Alicia R., Prashant P. Sharma (3249096), Giribet, Gonzalo, Ward C. Wheeler (3249090), Hormiga, Gustavo, Wheeler, Ward C., Vanessa L. González (1423396)   +13 more
core   +1 more source

The Role of Functional Analysis in Phylogenetic Inference: Examples from the History of the Xiphosura [PDF]

American Zoologist, 1981
SYNOPSIS. Conventional cladistic analyses of phylogeny can be interpreted as operating at the level of phylogenetic trees. They assume that all “evolutionary steps” (transitions from one character state to the next, along a morphocline) are independent and equal, and, on that basis, select the cladogram which is consistent with the most parsimonious ...
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Revision of “Bellinurus” carteri (Chelicerata: Xiphosura) from the Late Devonian of Pennsylvania, USA

Comptes Rendus Palevol, 2019
Abstract Horseshoe crabs are an iconic group of marine chelicerates that have an impressive fossil record extending back to at least the Lower Ordovician. Despite their long fossil record and associated palaeontological interest, a range of fossil horseshoe crab taxa erected in the 19th and 20th centuries have remained understudied.
Russell D.C. Bicknell, Lorenzo Lustri, Tom Brougham   +2 more
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Aglaspidichnus sanctacrucensis n. gen., n. sp., novyjj organicheskijj ieroglif verojatno sled pokoja Aglaspida (Xiphosura)

, 1967
Aglaspidichnus sanctacrucensis n.gen., n.sp. is a new trace fossil from the Upper Cambrian of the Holy Cross Mountains (Gory Swiętokrzyskie), Central Poland. It is considered to be the cast of the resting place of an aglaspid arthropod (Xiphosura).
Radwanski, A.
core  

implications for arachnid phylogeny (Arachnida, Chelicerata) [PDF]

, 2010
Die Morphologie der Buchlungen von Arachniden (Arachnida Lamarck, 1801 – Arthropoda, Chelicerata) wurde in der vorliegenden Dissertation einer streng vergleichenden Analyse unterzogen, welche mit Hilfe moderner Methoden eine neue Sicht auf die Phylogenie
Kamenz, Carsten
core   +1 more source