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Stem sarcopterygians have primitive polybasal fin articulation
sarcopterygians fin–limb transition stylopod shoulder girdle polybasal fin articulation
2014/3/26
Among osteichthyans, basal actinopterygian
fishes (e.g. paddlefish and bowfins) have paired
fins with three endoskeletal components (pro-,
meso- and metapterygia) articulating with
polybasal shoul...
The Origin and Diversification of Osteichthyans and Sarcopterygians: Rare Chinese Fossil Findings Advance Research on Key Issues of Evolution
Rare Chinese Fossil Findings Advance The Origin and Diversification
2014/3/26
iving organisms represent
only 1% of all the biota that
has ever existed on earth.
All organisms, living or extinct,
are related to each other by sharing
common ancestors at different levels...