Sarcopterygii

Also known as lobe-finned fishes, lobe-finned fish

Sarcopterygii (; )—sometimes considered synonymous with Crossopterygii ()—is a clade (traditionally a class or subclass) of vertebrate animals which includes a group of bony fishes commonly referred to as lobe-finned fishes. These vertebrates are characterised by prominent muscular limb buds (lobes) within their fins, which are supported by articulated appendicular skeletons. This is in contrast to the other clade of bony fishes, the Actinopterygii, which have only skin-covered bony spines supporting the fins.

OverviewAI-generated

Sarcopterygii is a taxon within the phylum Chordata, classified at the rank of Gigaclass. It is part of the Osteichthyes group and has an accepted status in taxonomic records. The lineage dates back to approximately 423 million years ago.

Organisms in this group inhabit marine, brackish, and freshwater environments. Specimens are held by institutions including NMMNHS, MNHN, and KU. Records associated with Sarcopterygii are located in the United States and ViêT Nam.

Synthesized by Vinony from 12 facts across 4 sources: Wikidata, iDigBio, WoRMS, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

In the Vinony graph

Vinony's link graph records 1,113 inbound references to Sarcopterygii, and connects out to Rhipidistia, Osteichthyes and Dipnoi.

It sits within the topics Extant Silurian first appearances, Fish classes and Pridoli first appearances.

Vinony links it to 71 Wikipedia language editions.

Species

Gigaclass

PhylumChordata

Habitatmarine, brackish, freshwater

via

Museum specimens

Specimen records: 5
Collections: NMMNHS, MNHN, KU
Recorded in: United States, ViêT Nam

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Wikidata facts

Instance of: clade
Parent taxon: Euteleostomi
Image: Latimeria chalumnae01.jpg

Show 9 more facts

taxon name: Sarcopterygii
Commons category: Osteichthyes
taxon rank: superclass
Code of nomenclature: International Code of Zoological Nomenclature
topic's main category: Category:Sarcopterygii
taxon common name: mesnatoplavutarice
topic has template: Template:Sarcopterygii
start time: 423000000-
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4

Sources (1)

wikidata.org

via Wikidata · CC0

~18 min read

Encyclopedic overview

14 sections

Contents

Characteristics
Classification
Ahlberg (1991)
Nelson ''et al''. (2016)
Betancur-Rodrigues ''et al''. (2017)
Tedersoo (2017)
Taxonomy
Evolution
Hypotheses for means of pre-adaptation
History through to the end-Permian extinction
Phylogeny
See also
Footnotes
References

The tetrapods, a mostly terrestrial clade of vertebrates, are now recognized as having evolved from sarcopterygian ancestors and are most closely related to lungfishes. Their paired pectoral and pelvic fins evolved into limbs, and their foregut diverticulum eventually evolved into air-breathing lungs. Cladistically, this would make the tetrapods a subgroup within Sarcopterygii and thus sarcopterygians themselves. As a result, the phrase "lobe-finned fish" normally refers to not the entire clade but only aquatic members that are not tetrapods, i.e. a paraphyletic group.

Excerpted from Wikipedia’s “Sarcopterygii” article, available under the CC BY-SA 4.0 licence.