Ben Creisler | 1 Feb 17:39 2015

Dinosaur extinction + Scott Sampson + Brazilian paleoart + more

Ben Creisler
bcreisler <at>

Some recent news items:

Opinion piece about the revival of the Deccan Traps volcanism as cause
or major part of Cretaceous extinction

NOTE: This piece mentions work by Mark Richards. He gave a talk last
May at Berkeley about his research and efforts to find the K-Pg
boundary signal in the Deccan eruption sequence, along with the
possible link between global earthquakes and a subsequent massive
pulse of magma at the Deccan site shortly after the impact.

The talk is on YouTube at this link.

Extraterrestrial impact in Yucatán, lava floods & Cretaceous-Tertiary extinction
Mark Richards, geologist at Berkeley (former dean at Berkeley)

Note that this was part of a ceremony for Richards stepping down as a
dean and returning to the Geology Department at Berkeley. His talk
actually starts about 8 minutes in. I was going to mention this video
in a planned 2014 summary (now postponed).

Abstract of research

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Ben Creisler | 1 Feb 07:36 2015

Fwd: Digalodon (Permain dicynodont) redescribed + Cacops specimen (free pdfs)

Another blocked posting. I'll try again...

---------- Forwarded message ----------
From: Ben Creisler <bcreisler <at>>
Date: Sat, Jan 31, 2015 at 10:15 PM
Subject: Digalodon (Permain dicynodont) redescribed + Cacops specimen
(free pdfs)
To: dinosaur <at>

Ben Creisler
bcreisler <at>

Two recent non-dino papers in open access:

C. F. Kammerer, K. D. Angielczyk, and J. Fröbisch (2015)
Redescription of Digalodon rubidgei, an emydopoid dicynodont
(Therapsida, Anomodontia) from the Late Permian of South Africa.
Fossil Record 18: 43-55

The Late Permian dicynodont Digalodon rubidgei Broom and Robinson,
1948, is redescribed based on reanalysis of the holotype and newly
recognized referable specimens. Digalodon can be diagnosed by the
presence of a long “beak” sharply demarcated from the caniniform
process; an extremely tall zygomatic ramus of the squamosal, with a
thickened, “folded-over” dorsal margin; raised parietal “lips” along
the lateral edges of the pineal foramen; and a broad posterolateral
expansion of the parietal, excluding the postorbital from the back of
the skull roof. Inclusion of Digalodon in a recent analysis of
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Ben Creisler | 31 Jan 18:01 2015

Temnospondyl bone histology and skull ornamentation + Eastern European Permian Theromorpha

Ben Creisler
bcreislerF <at>

A number of recent non-dino papers that may be of interest:

Julia B. Mchugh  (2015)
Paleohistology of Micropholis stowi (Dissorophoidea) and Lydekkerina
huxleyi (Lydekkerinidae) humeri from the Karoo Basin of South Africa,
and implications for bone microstructure evolution in temnospondyl
Journal of Vertebrate Paleontology (advance online publication)

Temnospondyl amphibians are a large and diverse group of early
tetrapods, whose paleohistology has been incompletely studied. Here,
humeri of Micropholis stowi and Lydekkerina huxleyi from the Karoo
Basin of South Africa (Katberg Formation) were thin–sectioned for
paleohistological analysis. Diaphyseal bone histology of both taxa
exhibits a convergence to fibrolamellar tissue and an absence of lines
of arrested growth; additionally, medullary cavities free of
trabeculae support terrestrial lifestyles in both Micropholis and
Lydekkerina. The presence of azonal tissue in Micropholis is unlike
that of other dissorophoids or extant caudatans, suggesting an
adaptation to local conditions in the Early Triassic of the Karoo
Basin, as well as a complicated and incompletely studied pattern of
histological evolution in dissorophoids. Additionally, the propodial
histology of these and 12 other taxa were assessed through different
broad–scale phylogenetic hypotheses for Temnospondyli. Results reveal
convergence towards sustained, non–cyclical growth and an absence of
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Michael Lange | 31 Jan 15:24 2015

Free pdfs of paleo papers on

(Apparently this did't go through)

In case you don't know. A huge number of papers (some not mentioned yet) is legally available on Here are some links:

Vertebrate Paleontology:

Dinosaurs Paleontology:


Marine reptiles:




Mammalian Paleontology:

Vertebrate Fossil Preparation:
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John Bois | 31 Jan 03:49 2015

Aepyornis egg shells

In this clip Richard Attenborough shows us Aepyornis shells and
credits egg predation (by humans)for the elephant bird extinction. But
what are we looking at in this clip...a nesting colony or a trash heap
of discarded egg shells?

Ben Creisler | 30 Jan 18:54 2015

Birds and dinosaurs in Audubon magazine + Stegosaurus snub? + more

Ben Creisler
bcreisler <at>

A number of recent items:

Which Came First: the Dinosaur or the Bird?


A different take on the new Stegosaurus in the Natural History Museum
in London -- The specimen was discovered, excavated, and prepared by
the privately run Sauriermuseum Aathal in Switzerland, but head
paleontologist Hans-Jakob Siber was not invited to the official gala
in London (in German)


Gorgetosuchus press prelease

More on Dippy vs. blue whale controversy

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Poekilopleuron | 30 Jan 11:24 2015

Paleocene dinosaurs papers

Would any of you be so kind and send me a copy of these papers: Rigby et al.
(1987): Dinosaurs from the Paleocene Part of the Hell Creek Formation, 
McCone County, Montana (Palaios) and Sloan, R. E., Rigby, K,. Van Valen, L. 
M., Gabriel, Diane (1986). "Gradual dinosaur extinction and simultaneous 
ungulate radiation in the Hell Creek formation." Science 232. Thank you very
much in advance, Tom
Ben Creisler | 29 Jan 18:08 2015

Dinosaur discovered while filming Dino Hunt Canada + running out of dinosaurs + more news

Ben Creisler
bcreisler <at>

A number of recent items:

New ceratopsian dinosaur found while filming show  Dino Hunt Canada
for History Channel


Will paleontologists run out of dinosaurs to discover? (video)


Dippy the Diplodocus dumped for blue whale display at Natural History Museum


Dinosaur tracks in El Castellar in Spain (in Spanish)

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Ben Creisler | 29 Jan 17:30 2015

Dinosaur track record of Italy

Ben Creisler
bcreisler <at>

A new online paper:

Paolo Citton, Umberto Nicosia & Eva Sacchi (2015)
Updating and reinterpreting the dinosaur track record of Italy.
Palaeogeography, Palaeoclimatology, Palaeoecology (advance online publication)


We updated and reinterpreted the dinosaur-track record of Italy.
Three distinct associations have been recognized from Carnian to Maastrichtian.
Data indicate a late Cenomanian-early Turonian extensional tectonic phase.
The traditional geodynamics of the peri-Mediterranean area should be


The recently discovered, and unexpectedly rich, dinosaurian
ichnological record of Italy, has proven to be integral to the
palaeogeographic understanding of the peri-Mediterranean area, and is
updated and refined herein. Through analysis of the stratigraphic,
spatial, and geodynamic context of the entirety of the current
ichnological dataset, three distinct associations are recognized (Late
Triassic-Early Jurassic, late Tithonian-late Cenomanian and
Coniacian-Maastrichtian). While the first and last associations can be
largely encompassed by pre-existing models, the late Tithonian-late
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Ben Creisler | 29 Jan 00:21 2015

Titanosaur material from Upper Cretaceous of Uzbekistan

Ben Creisler
bcreisler <at>

A new online paper (no new taxa named):

Hans-Dieter Sues, Alexander Averianov, Ryan C. Ridgely & Lawrence M.
Witmer (2015)
Titanosauria (Dinosauria, Sauropoda) from the Upper Cretaceous
(Turonian) Bissekty Formation of Uzbekistan.
Journal of Vertebrate Paleontology (advance online publication)

Exposures of the Bissekty Formation (Upper Cretaceous: middle–upper
Turonian) at Dzharakuduk in the central Kyzylkum Desert of Uzbekistan
have yielded abundant dinosaurian remains. We report here on cranial
and postcranial remains that can be attributed to titanosaurian
sauropods. This material is of considerable interest in view of the
relative scarcity of sauropod fossils from the Upper Cretaceous of
Central Asia. An incomplete braincase originally assigned to the
ceratopsian Turanoceratops tardabilis actually belongs to a derived
titanosaurian. It shares a number of features (including broad basal
tubera and presence of wide depression between basal tubera) with
braincases of various derived titanosaurian taxa from Asia and South
America. Computed tomographic (CT) scanning of the braincase permitted
digital reconstruction of a partial endocast. Overall, this endocast
resembles those of other sauropods, although the pituitary fossa is
considerably swollen. As in other derived titanosaurians, the abducens
nerve passed lateral to the pituitary fossa. The inner ear resembles
that of some other titanosaurs in having a very short lateral
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Ben Creisler | 28 Jan 23:27 2015

Qijianglong reconstruction + stratigraphic paleobiology + Dreadnoughtus

Ben Creisler
bcreisler <at>

More recent items:

Qijianglong press release with painting


Dreadnoughtus interviews


Clidastes and Basilosaurus from Alabama

Putting fossils in context with stratigraphic paleobiology



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