Intrinsic Iron May Have Promoted Ancient Nervous Tissue Fossilization

Anderson, Ross P.

doi:10.1002/bies.202000070

Cited by 2 publications

(3 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A recent hypothesis by Saleh et al . ( 18 ) explaining preservation of neural tissue proposes that authigenic tissue pyritization may be initiated by breakdown of the neuropil’s native ferritin ( 18 , 19 ). The absence of dark deposits indicative of overlying carbon ( 17 ) could be explained by partial decay of the carcass or recent weathering ( 20 ).…”

mentioning

confidence: 99%

“…Unlike dark carbonaceous compressions familiar as preserved neuropil (16,17), structures interpreted here as neural are resolved as magenta to rust-brown deposits. A recent hypothesis by Saleh et al (18) explaining preservation of neural tissue proposes that authigenic tissue pyritization may be initiated by breakdown of the neuropil's native ferritin (18,19). The absence of dark deposits indicative of overlying carbon ( 17) could be explained by partial decay of the carcass or recent weathering (20).…”

mentioning

confidence: 99%

See 1 more Smart Citation

The lower Cambrian lobopodian Cardiodictyon resolves the origin of euarthropod brains

Strausfeld

Hou

Sayre

et al. 2022

Science

View full text Add to dashboard Cite

For more than a century, the origin and evolution of the arthropod head and brain have eluded a unifying rationale reconciling divergent morphologies and phylogenetic relationships. Here, clarification is provided by the fossilized nervous system of the lower Cambrian lobopodian Cardiodictyon catenulum , which reveals an unsegmented head and brain comprising three cephalic domains, distinct from the metameric ventral nervous system serving its appendicular trunk. Each domain aligns with one of three components of the foregut and with a pair of head appendages. Morphological correspondences with stem group arthropods and alignments of homologous gene expression patterns with those of extant panarthropods demonstrate that cephalic domains of C. catenulum predate the evolution of the euarthropod head yet correspond to neuromeres defining brains of living chelicerates and mandibulates.

show abstract

mentioning

confidence: 99%

mentioning

confidence: 99%

The lower Cambrian lobopodian Cardiodictyon resolves the origin of euarthropod brains

Strausfeld

Hou

Sayre

et al. 2022

Science

View full text Add to dashboard Cite

show abstract

“…The cuticle encasing the muscles, in addition to dissolved Fe 2+ in the ferruginous porewater that enabled siderite precipitation, may have helped to slow the decay process and facilitate rapid moulding of these soft tissues (Schweitzer et al . 2014; Anderson 2020; Saleh et al . 2020).…”

Section: Discussionmentioning

confidence: 99%

Carboniferous horseshoe crab musculature suggests anatomical conservatism within Xiphosurida

Bicknell

Tashman

Edgecombe

et al. 2021

Papers in Palaeontology

View full text Add to dashboard Cite

An exceptionally preserved specimen of the horseshoe crab Euproops danae (Xiphosurida, Belinurina) in a siderite concretion from the Carboniferous (Upper Pennsylvanian, Virgilian) Lawrence Formation, Kansas, shows anatomical details of the prosomal musculature. The extrinsic appendicular muscles are comparable to those of Limulus polyphemus (the modern American horseshoe crab), demonstrating anatomical conservatism within Xiphosurida that spans two morphologically disparate subgroups, Belinurina and Limulina. The three‐dimensional preservation of muscles highlights how siderite concretion fossils (including those of the Mazon Creek Konservat‐Lagerstätte) have better preservational fidelity than previously realized and the potential to reveal new anatomical information, especially with regard to the labile tissues of euarthropods.

show abstract

Intrinsic Iron May Have Promoted Ancient Nervous Tissue Fossilization

Cited by 2 publications

References 5 publications

The lower Cambrian lobopodian Cardiodictyon resolves the origin of euarthropod brains

The lower Cambrian lobopodian Cardiodictyon resolves the origin of euarthropod brains

Carboniferous horseshoe crab musculature suggests anatomical conservatism within Xiphosurida

Contact Info

Product

Resources

About