Histology and affinity of the earliest armoured vertebrate

Research output: Contribution to journal › Article

Standard

Histology and affinity of the earliest armoured vertebrate. / Sansom, Ivan; Donoghue, PCJ; Albanesi, G; Donoghue, PCJ.

In: Biology Letters, Vol. 1, 22.12.2005, p. 446-449.

Research output: Contribution to journal › Article

Harvard

Sansom, I, Donoghue, PCJ, Albanesi, G & Donoghue, PCJ 2005, 'Histology and affinity of the earliest armoured vertebrate', Biology Letters, vol. 1, pp. 446-449. https://doi.org/10.1098/rsbl.2005.0349

APA

Sansom, I., Donoghue, PCJ., Albanesi, G., & Donoghue, PCJ. (2005). Histology and affinity of the earliest armoured vertebrate. Biology Letters, 1, 446-449. https://doi.org/10.1098/rsbl.2005.0349

Vancouver

Sansom I, Donoghue PCJ, Albanesi G, Donoghue PCJ. Histology and affinity of the earliest armoured vertebrate. Biology Letters. 2005 Dec 22;1:446-449. https://doi.org/10.1098/rsbl.2005.0349

Author

Sansom, Ivan ; Donoghue, PCJ ; Albanesi, G ; Donoghue, PCJ. / Histology and affinity of the earliest armoured vertebrate. In: Biology Letters. 2005 ; Vol. 1. pp. 446-449.

Bibtex

@article{bf3f7cab106f407283a1faa4cd75f9ae,
title = "Histology and affinity of the earliest armoured vertebrate",
abstract = "Arandaspids are the earliest skeletonizing vertebrates known from articulated remains. Despite a wealth of data, their affinity remains questionable because they exhibit a random mixture of primitive and derived characteristics. We constrain the affinity of arandaspids by providing the first detailed characterization of their dermoskeleton which is revealed to be three-layered, composed of a basal laminated, cancellous middle and tubercular superficial layers. All three layers are composed of acellular bone but the superficial layer also includes dentine and enameloid, comprising the tubercles. As such, the composition of the arandaspid dermoskeleton is common to heterostracans and astraspids, supporting existing hypotheses of early vertebrate phylogeny. This emphasizes the peculiarity of existing interpretations of aranadaspid anatomy and there is need for a complete reappraisal of the existing anatomical data.",
keywords = "gnathostome, vertebrate, enameloid, dermoskeleton, dentine, histology",
author = "Ivan Sansom and PCJ Donoghue and G Albanesi and PCJ Donoghue",
year = "2005",
month = dec,
day = "22",
doi = "10.1098/rsbl.2005.0349",
language = "English",
volume = "1",
pages = "446--449",
journal = "Biology Letters",
issn = "1744-9561",
publisher = "The Royal Society",

}

RIS

TY - JOUR

T1 - Histology and affinity of the earliest armoured vertebrate

AU - Sansom, Ivan

AU - Donoghue, PCJ

AU - Albanesi, G

AU - Donoghue, PCJ

PY - 2005/12/22

Y1 - 2005/12/22

N2 - Arandaspids are the earliest skeletonizing vertebrates known from articulated remains. Despite a wealth of data, their affinity remains questionable because they exhibit a random mixture of primitive and derived characteristics. We constrain the affinity of arandaspids by providing the first detailed characterization of their dermoskeleton which is revealed to be three-layered, composed of a basal laminated, cancellous middle and tubercular superficial layers. All three layers are composed of acellular bone but the superficial layer also includes dentine and enameloid, comprising the tubercles. As such, the composition of the arandaspid dermoskeleton is common to heterostracans and astraspids, supporting existing hypotheses of early vertebrate phylogeny. This emphasizes the peculiarity of existing interpretations of aranadaspid anatomy and there is need for a complete reappraisal of the existing anatomical data.

AB - Arandaspids are the earliest skeletonizing vertebrates known from articulated remains. Despite a wealth of data, their affinity remains questionable because they exhibit a random mixture of primitive and derived characteristics. We constrain the affinity of arandaspids by providing the first detailed characterization of their dermoskeleton which is revealed to be three-layered, composed of a basal laminated, cancellous middle and tubercular superficial layers. All three layers are composed of acellular bone but the superficial layer also includes dentine and enameloid, comprising the tubercles. As such, the composition of the arandaspid dermoskeleton is common to heterostracans and astraspids, supporting existing hypotheses of early vertebrate phylogeny. This emphasizes the peculiarity of existing interpretations of aranadaspid anatomy and there is need for a complete reappraisal of the existing anatomical data.

KW - gnathostome

KW - vertebrate

KW - enameloid

KW - dermoskeleton

KW - dentine

KW - histology

UR - http://www.scopus.com/inward/record.url?scp=29144451309&partnerID=8YFLogxK

U2 - 10.1098/rsbl.2005.0349

DO - 10.1098/rsbl.2005.0349

M3 - Article

C2 - 17148229

VL - 1

SP - 446

EP - 449

JO - Biology Letters

JF - Biology Letters

SN - 1744-9561

ER -