-
Heterostraci (Ancient Gr****, ἕτερος+ὄστρακον "those [with] a
different s****" [-i is pl. of -us]) is an
extinct subclass of pteraspidomorph, Ostracoderm...
- 2013
Genus †Sacabambaspis Gagnier,
Blieck & Rodrico, 1986
Astraspida Heterostraci Janvier,
Philippe (1997)
Arandaspida The Tree of Life Web Project. Haaramo...
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Astraspida Eriptychiida Heterostraci see below↓...
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David K.
Elliott &
Michael A.
Petriello (2011). "New
poraspids (Agnatha,
Heterostraci) from the
Early Devonian of the
western United States".
Journal of Vertebrate...
- Goodrich, 1909 Type
species Pteraspis rostrata Ag****iz, 1835
Subgroups †Anatolepis †Arandaspida †Heterostracomorphi †Astraspida †Eriptychiida †
Heterostraci...
- Phylum:
Chordata Infraphylum:
Agnatha class: †Pteraspidomorphi Subclass: †
Heterostraci Order: †Pteraspidiformes Genus: †Astraspis Walcott, 1892 Type species...
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Although it is
regarded as a heterostracan, its
exact placement within Heterostraci is
regarded as
incertae sedis, as the fact that it is
currently impossible...
-
Astraspida Eriptychiida Heterostraci see below↓...
- 91..493L. doi:10.1017/jpa.2016.155. ISSN 0022-3360. S2CID 132698401. "
Heterostraci systematics,
phylogenetics and macroevolution:
investigating evolutionary...
- Vietnam. Superficially,
their morphology appears more
similar to that of
Heterostraci than Osteostraci,
there being currently no
evidence that the galeaspids...
