Results 171 to 180 of about 12,768 (231)

The shoulder girdle of early chondrichthyans grew by skeletal remodelling. [PDF]

open access: yesBiol Lett
Andreev PS   +8 more
europepmc   +1 more source

Silurian chitinozoan biostratigraphy of Sardinia

open access: yes, 2009
DEL RIO M., PITTAU, PAOLA
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A Silurian pseudocolonial pterobranch

Current Biology, 2023
Pterobranchs, a major group of the phylum Hemichordata, first appear in the fossil record during the Cambrian,1 and there are more than 600 fossil genera dominated by the mainly planktic graptolites of the Paleozoic, which are widely used as zone fossils for correlating sedimentary rock sequences.2 Pterobranchs are rare today; they are sessile marine ...
Derek E.G. Briggs   +1 more
openaire   +2 more sources

Silurian

Geological Society, London, Memoirs, 1992
Abstract The history of establishment of the Silurian System (and hence of the Silurian Period) and its principal divisions has been reviewed by Cocks et al . (1971) and Holland (1984, 1989 a ).
M. G. Bassett   +4 more
openaire   +1 more source

Silurian

1994
Abstract The Early-Middle Llandoverian was similar to the end of the Late Ordovician in the general features of palaeogeography and biotas. In the southern hemisphere, Gondwana was still integral, except for a number of small separate plates along its margins, and it was situated mostly in the middle and high latitudes south to 30°S ...
openaire   +1 more source

Silurian

2018
Jacques Verniers   +6 more
  +5 more sources

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