From Fins to Fingers

  title={From Fins to Fingers},
  author={Jennifer Alice Clack},
  pages={57 - 58}
  • J. Clack
  • Published 2 April 2004
  • Biology
  • Science
The transition from fish to tetrapod, and from fins to fingers, began during the Devonian period about 370 to 360 million years ago. In her Perspective, Clack discusses the implications of a new fossil find of a humerus from a Devonian tetrapod that sheds light on the anatomical and functional changes taking place in the tetrapod lineage during this period ( Shubin et al.). 

Fish fingers: digit homologues in sarcopterygian fish fins.

Evidence suggests that Neoceratodus fin radials and tetrapod digits may be patterned by shared mechanisms distinct from those patterning the proximal fin/limb elements, and in that sense are homologous.

The humerus of Panderichthys in three dimensions and its significance in the context of the fish–tetrapod transition

The humerus of Panderichthyshas been considered to represent a transitionalform between that of tetrapodomorph fish such asEusthenopteronandtetrapods such asAcanthostega. The previous description w

Limb‐bone histology of temnospondyls: implications for understanding the diversification of palaeoecologies and patterns of locomotion of Permo‐Triassic tetrapods

This study presents the first palaeohistological study based on theoretical biomechanical considerations among a highly diversified group of early tetrapods, the temnospondyls, based on the quantification of microanatomical and histological parameters in the humerus and femur of nine genera.

The humerus of Eusthenopteron: a puzzling organization presaging the establishment of tetrapod limb bone marrow

It is shown that Eusthenopteron also retains plesiomorphic characters such as a large medullary cavity, partly resulting from the perichondral ossification around a large cartilaginous bud as in actinopterygians, and exhibits a distinctive tubular organization of bone-marrow processes.

Fossils, function and phylogeny: Papers on early vertebrate evolution in honour of Professor Jennifer A. Clack – Introduction

Fossils, function and phylogeny : Papers on early vertebrate evolution in honour of Professor Jennifer A. Clack - Introduction

A Multidisciplinary Approach to Complex Systems Design

It is argued that this approach can extend the domain of applicability of the discipline of complex systems into situations where quantitative data is unavailable, and human and social factors are significant.

Incorporating Agency Into Climate Change Risk Assessments

Human agency has been viewed as a problem for climate change assessments because of its contribution to uncertainty. In this editorial, I outline the advantages of agency in managing climate change



The Early Evolution of the Tetrapod Humerus

A comparative analysis of this fossil and other relevant humeri from the Devonian shows that the role of the limb in propping the body arose first in fish fins, not tetrapod limbs.

Fish with fingers?

This discovery reveals that major tetrapod novelties are also seen in the paddles of some closely related fish and therefore need not have arisen to meet the demands of a terrestrial existence.

Pectoral fins of rhizodontids and the evolution of pectoral appendages in the tetrapod stem-group

The pectoral fin skeleton of Rhizodus hibberti, a derived member of the Rhizodontida, is described in detail for the first time, showing that muscular processes of the humerus may have appeared later in tetrapod evolution than previously thought.

A uniquely specialized ear in a very early tetrapod

Ichthyostega's braincase and ear region defied interpretation, such that conventional anatomical terms seemed inapplicable, and can now be seen to form part of a highly specialized ear, probably a hearing device for use in water.

Groenlandaspidid placoderm fishes from the Late Devonian of North America

Two new taxa of groenlandaspidid fish (Placodermi: Arthrodira) from non-marine deposits of the Catskill Formation (Upper Devonian) at Red Hill, Clinton County, Pennsylvania, USA, are the first to be

Rhizodont crossopterygian fish from the Dinantian of Foulden, Berwickshire, Scotland, with a re-evaluation of this group

  • S. M. Andrews
  • Environmental Science
    Transactions of the Royal Society of Edinburgh: Earth Sciences
  • 1985
ABSTRACT Material of crossopterygian fishes from Foulden, Berwickshire, is important in including the first known entire specimen giving a clear picture of the body form of the Family Rhizodontidae

The Devonian tetrapod Acanthostega gunnari Jarvik: postcranial anatomy, basal tetrapod interrelationships and patterns of skeletal evolution

Comparison between axial skeletons of primitive tetrapods suggests that plesiomorphic fish-like morphologies were re-patterned in a cranio-caudal direction with the emergence of tetrapod vertebral regionalisation.