A Cambrian gilled lobopod from Greenland

  title={A Cambrian gilled lobopod from Greenland},
  author={Graham E. Budd},
  • G. Budd
  • Published 1 August 1993
  • Biology, Environmental Science
  • Nature
THE discovery of several 'Burgess Shale'-like faunas in the Cambrian has added significant new data to the debate about the nature of the 'Cambrian explosion'. Lobopod animals have emerged as a much more important component of the Cambrian fauna than of the Recent1,2. A new lobopod-like animal, Kerygmachela kierkegaardi gen. et sp. nov., is now reported from the Lower Cambrian Sirius Passet fauna, north Greenland3. Although it shares features with other recently described lobopods, it differs… 

An armoured Cambrian lobopodian from China with arthropod-like appendages

D. cactiformis is described as an ‘armoured’ lobopodian from the Chengjiang fossil Lagerstätte (Cambrian Stage 3), Yunnan, southwestern China, remarkable for possessing robust and probably sclerotized appendages, with what appear to be articulated elements.

A New Bivalved Arthropod from the Early Cambrian Sirius Passet Fauna, North Greenland

A new bivalved arthropod is described from the Lower Cambrian (?Upper Atdabanian) Buen Formation of North Greenland. Pauloterminus spinodorsalis gen. et sp. nov. possesses a bivalved carapace that

The morphology and phylogenetic position of the Cambrian lobopodian Diania cactiformis

This study challenges the previous description of anteroposterior orientation, terminal claws and trunk tagmosis as expressed by differentiated anterior and posterior appendages in Cambrian lobopodians, and revisits the phylogeny of stem arthropods.

A New ?Lamellipedian Arthropod from the Early Cambrian Sirius Passet Fauna of North Greenland

The Non-Mineralized arthropod described herein is derived from the Sirius Passet fossil conservation deposit of North Greenland (82°47.6,N, 42°13.7ʹW), the oldest locality with exceptional

A Cambrian fossil from the Chengjiang fauna sharing characteristics with gilled lobopodians, opabiniids and radiodonts

Parvibellus atavus gen. et sp. nov. from the Early Cambrian Chengjiang fauna of China is a small fossil having a distinct cephalic region bearing a pair of lateral projections and a circular, ventral

The nature and significance of the appendages of Opabinia from the Middle Cambrian Burgess Shale

A new hypothesis for the origin of the arthropod biramous limb from an exopod like that in Opabinia is presented, which involves an endite-bearing phyllopodous limb as an intermediate stage.

A Cambrian unarmoured lobopodian, †Lenisambulatrix humboldti gen. et sp. nov., compared with new material of †Diania cactiformis

  • Q. OuG. Mayer
  • Geography, Environmental Science
    Scientific Reports
  • 2018
The study augments the morphological diversity of Cambrian lobopodians and presents two evolutionary extremes of cuticular ornamentation: one represented by the Humboldt lobopODian, which was most likely entirely “naked”, the other epitomized by †D.

The morphology of Opabinia regalis and the reconstruction of the arthropod stem‐group

It is concluded that these three taxa probably form a paraphyletic grouping at the base of the arthropods, and retention of lobopod-like characters within the group provides important documentation of the lobopOD-arthropod transition.

Stem group arthropods from the Lower Cambrian Sirius Passet fauna of North Greenland

  • G. Budd
  • Geography, Environmental Science
  • 1998
Discussion of fossil evidence for the origin and early evolution of the arthropods has been dominated for many years by the evidence from the Middle Cambrian Burgess Shale from British Columbia



New early Cambrian animal and onychophoran affinities of enigmatic metazoans

A new 'armoured lobopod' from the Chengjiang fauna is described and shows close affinity with the enigmatic Microdictyon, and soft-part anatomy suggests that the group has affinities with the Burgess Shale 'lobopod', Aysheaia.

A Burgess shale-like fauna from the Lower Cambrian of North Greenland

The 'Cambrian explosion' refers to the major adaptive radiation of the metazoans during the earliest Phanerozoic, an event that is best known by the abrupt appearance of hard parts near to the

Composition and preservation of the Chengjiang fauna –a Lower Cambrian soft‐bodied biota

The Lower Cambrian Chengjiang fauna is reviewed and shown to be closely comparable with the younger Burgess Shale fauna. but with various differences in detail. A diverse group of more or less

Trilobites and the Origin of Arthropods

The appearance of fossilizable hard parts in arthropods resulted from shift in supporting function from the body cavity, primitively a hydrostatic skeleton, to the cuticle, which came to be strengthened in becoming an exoskeleton.

The oldest ‘onychophoran’Xenusion: a link connecting phyla?

The second specimen of Xenurion auerswaldae Pompeckj 1927, found in an erratic boulder of the basal Cambrian Kalmarsund sandstone in Hiddensee island, GDR, appears to represent the part of the body missing in the holotype, enabling reconstruction of the whole animal, which was of rather simple anatomical organization.

Homologies in Cambrian Onychophora

New morphological evidence and homology analyses for several characters indicate an anteroposterior reversal of Hallucigenia and Microdictyon, and the taxonomic confusion surrounding the supposed radiolarian family Eoconchariidae is cleared.

The Early Radiation and Relationships of the Major Arthropod Groups

Cladistic analysis of characters of Cambrian and living representatives (excluding Uniramia) shows that trilobites and chelicerates are relatively advanced compared with "crustaceans," and there are doubts whether the latter constitute a national group.

The Lobopod Animal Aysheaia pedunculata Walcott, Middle Cambrian, Burgess Shale, British Columbia

Aysheaia pedunculata is one of the rarer animals in the Burgess Shale, occurring in association with arthropods and worms, and to an exceptional extent with sponge fragments, and it is not placed in either group, nor in any taxon of higher rank than Family Aysheaiidae.

The enigmatic animal Opabinia regalis, middle Cambrian, Burgess Shale, British Columbia

O. regalis is not considered to have been a trilobitomorph arthiopod, nor is it regarded as an annelid, but it may be descended from segmented animals from which arthropod phyla and/or annelids were derived.

The phylogenetic status of arthropods, as inferred from 18S rRNA sequences.

It is suggested that a previous study's inference of the Arthropoda as paraphyletic may be the result of having two few arthropod taxa available for analysis and including long-branched taxa, and that the evolutionary-parsimony method, like distance and parsimony, may be biased by taxa with long branches.