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Land (Franz Josef Land, Arctic Russia). ( 英
文 ). A G Sennikov; M S Arkhangelsky. Paleontological
Journal, 2010, 44(5): 567-572 6
图 版 .
A new elasmosaurid genus and species,
Alexeyisaurus karnoushenkoi, from the
Lower-Middle Norian (Wilczek Formation) of
the Upper Triassic of the island of Wilczek
Land (Franz Josef Land) is described based on
an incomplete skeleton. The new form combines
characters of typical late plesiosaurs and
structural features unique to this form. It is
probably the earliest representative of typical
late sauropterygians (plesiosaurs).
2010040391
澳 大 利 亚 晚 白 垩 世 海 龟 鳖 类 的 第 一 个 证 据
= First evidence of a Late Cretaceous sea turtle
from Australia. ( 英 文 ). Keara B P; Siverson
M. Alcheringa, 2010, 34(3): 265-272
The isolated scapula of a chelonioid sea turtle
is described from the Upper Cretaceous
(upper Maastrichtian) Miria Formation of the
Giralia Ranges in Western Australia. Character
states including the wide angle of divergence
between the scapular processes (possibly
reaching 140°), projection of the glenoid
on a constricted scapular neck, and highly
vascular glenoid articular surfaces suggest
affinity with dermochelyoids—the most diverse
and geographically widespread clade of
Mesozoic chelonioids. The Miria Formation
chelonioid scapula constitutes the first definitive
record of a Late Cretaceous sea turtle
from Australia and is one of the few occurrences
thus far documented from Upper Cretaceous-Paleogene
deposits in the Southern
Hemisphere.
2010040392
西 澳 大 利 亚 Molecap Greensand 地 区 晚 白
垩 世 翼 手 龙 化 石 = Remains of a Late Cretaceous
pterosaur from the Molecap Greensand
of Western Australia. ( 英 文 ). Keara B P; Deaconb
G L; Siverson M. Alcheringa, 2010,
34(3): 273-279
Pterosaur remains are very rare in Australasia
and especially in Upper Cretaceous strata.
Thus, the discovery of a jaw fragment from
the Cenomanian-Coniacian Molecap Greensand
near Gingin in Western Australia represents
an important new stratigraphical occurrence
for the region. Although the teeth are
not preserved, the presence of labio-lingually
compressed alveoli that are anterolaterally
oriented, variable in shape/size (inferring heterodonty)
and very widely spaced is reminiscent
of ornithocheirids—a geographically
cosmopolitan clade of predominantly Early
Cretaceous pterodactyloids. If correct, this
identification could extend the known range of
Ornithocheiridae through to the Late Cretaceous
in the Southern Hemisphere.
2010040393
澳 大 利 亚 鱼 龙 类 的 评 述 = A review of Australasian
ichthyosaurs. ( 英 文 ). Zammit M.
Alcheringa, 2010, 34(3): 281-292
Ichthyosaur fossils have been recorded from
four landmasses in the Australasian region—
Australia, New Zealand, New Caledonia and
Timor—and occur in all three systems of the
Mesozoic. Most of the remains are nondiagnostic,
but at least three genera have been
identified: Mixosaurus, from the Middle Triassic
of Timor; Shonisaurus, from the Upper
Triassic of New Caledonia; and Platypterygius,
from the Lower Cretaceous of Australia and
New Zealand. Of these, Platypterygius contains
the only material that can be diagnosed
to species level. However, current taxonomy
of the specimens is controversial, with two
synonyms, P. australis and P. longmani, persisting
in the literature. An examination of
cranial traits in the 'quasi-holotype' of P. australis
vs P. longmani demonstrates that they
represent the same taxon. Thus, P. longmani
should be regarded as the junior synonym. A
neotype is also here designated for P. australis
to replace the original, which is presumed lost.
2010040394
南 澳 大 利 亚 下 白 垩 统 阿 普 特 阶 Bulldog 页
岩 硅 化 的 初 龙 化 石 = Opalized archosaur remains
from the Bulldog Shale (Aptian: Lower
Cretaceous) of South Australia. ( 英 文 ). Barretta
P M; Kearb B P; Benson R B J. Alcheringa,
2010, 34(3): 293-301
Terrestrial reptile remains are very rare in
the Lower Cretaceous of South Australia, but
include the holotype of the small theropod
Kakuru. Here, we review this taxon and other
archosaur specimens collected from the Bulldog
Shale (Aptian) of Andamooka and Coober
Pedy. Kakuru possesses no unique characters
or character state combinations and is regarded
as a nomen dubium, representing an
indeterminate tetanuran theropod. Two other
specimens (a left metatarsal and astragalus)
can be referred to Dinosauria, but the identity
of several other specimens (phalanges and a
centrum) can only be resolved to the level of
an indeterminate archosaur.
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