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Dinosaur Genera List corrections #115



I've just returned from the SVP annual meeting in Denver, which in terms of 
hotel costs and add-on charges gives new meaning to the phrase "Mile High 
City." Anyway, there were a number of new dinosaur names and descriptions 
published just in time for the meeting, so here are the corresponding changes 
to the Dinosaur Genera List:

(1) Dinosaur Don Lessem has become a dinosaur eponym with the publication of L
essemsaurus sauropoides, a melanorosaurid prosauropod described in

Bonaparte, J. F., 1999. "Evolución de las vértebras presacras en 
Sauropodomorpha," Ameghiniana 36(2): 115?187 [August 15, 1999].

It is from the Upper Triassic Los Colorados Formation in La Rioja province, 
Argentina, and is based on a partial sauropod-like (hence the species 
epithet) articulated vertebral column that is mainly neural arches.

Accordingly, add genus #856 to the Dinosaur Genera List:

Lessemsaurus Bonaparte, 1999

(2) The November 1999 issue of National Geographic features yet another 
article on feathered dinosaurs (they're coming fast and furious these days), 
this one by Christopher P. Sloan. It displays photos of a new specimen from 
Liaoning, China referred to under the name Archaeoraptor liaoningensis, whose 
scientific description is to appear soon elsewhere. There were some 
disparaging comments on the provenance, quality, and genuineness of the 
specimen at the SVP meeting, and these observations may impact publication of 
the description. In the article and associated press releases, Archaeoraptor 
is portrayed as a feathered dinosaur capable of flight. The article also 
features a photograph of a complete short theropod tail with pygostyle said 
to belong to an "unnamed oviraptorosaur." Fun stuff.

Add genus #857 to the Dinosaur Genera List:

Archaeoraptor Sloan, 1999 [nomen nudum]

Reference is:

Sloan, C. P., 1999. "Feathers for T. rex?" National Geographic 196(5): 98?107 
[November 1999].

(3) The appearance of the proceedings of the second Gondwanan dinosaur 
symposium, held in Tokyo July 12-13, 1999, engendered a fistful of new names 
for the Dinosaur Genera List. First the reference to the volume:

Tomida, Y., Rich, T. H. & Vickers-Rich, P., eds., 1999. Proceedings of the 
Second Gondwanan Dinosaur Symposium, National Science Museum Monographs #15, 
Tokyo: x + 296 pp. [October 15, 1999].

This book may be ordered from

The Saurus Institute
7110 Oak Bluff Drive
Dallas, TX 75240 USA

for $25.00 plus $2.50 shipping, US funds only, no credit cards, payable to 
The Saurus Institute. My check is in the mail.

Here are the novodinosauriferous articles and contents from this volume:

Bonaparte, J. F., 1999. "An armoured sauropod from the Aptian of northern 
Patagonia, Argentina," in Tomida, Y., Rich, T. H. & Vickers-Rich, P., eds., 
1999: 1?12.

This article describes the sauropod Agustinia ligabuei (named after specimen 
discoverer Agustin Martinelli and paleontologist Giancarlo Ligabue), in the 
new family Agustiniidae (also misspelled Agustinidae in the article), from 
the Lohan Cura Formation. The type specimen is an incomplete sequence of 
fragmentary dorsal, sacral, and caudal vertebrae, hind limb elements, and 
tall, paired osteoderms that articulate with the tops of the neural spines. 
The osteoderms are described as movable. The dinosaur is undoubtedly related 
to the titanosaurians in some way. Previously this genus was reported under 
the name Augustia, which, since it is a preoccupied name, was changed to Agust
inia. However, there seems to be no reference in the paper to the former 
name, even though it has since appeared in a caption in a dinosaur picture 
book by Bonaparte recently published in Argentina.

Genus #858 of the Dinosaur Genera List is thus

Agustinia Bonaparte, 1999

I do not treat Augustia as a prior misspelling of Agustinia but as a 
preoccupied name, so I leave it in the Dinosaur Genera List unchanged.

Coria, R. A., 1999. "Ornithopod dinosaurs from the Neuquén Group, Patagonia, 
Argentina: Phylogeny and biostratigraphy,"in Tomida, Y., Rich, T. H. & 
Vickers-Rich, P., eds., 1999: 47?60.

No new dinosaurs are described in this article, but the names of two 
as-yet-undescribed taxa appear: the dryomorphan iguanodontian genus and 
species Anabisetia saldiviai and the abelisaurid theropod genus Ilokelesia. 
Specimens of these two dinosaurs were exhibited at the Tokyo Symposium, but 
as yet I have little further information on them except their attributions in 
Coria's article. As genera #859 and 860, add:

Anabisetia Coria & Calvo vide Coria, 1999 [nomen nudum]
Ilokelesia Coria & Salgado vide Coria, 1999 [nomen nudum]

to the Dinosaur Genera List. The specific name Ilokelesia aguadagrandensis 
appeared with the Ilokelesia specimen at the Symposium, but it has not yet 
appeared anywhere in print to my knowledge.

Rich, T. H., Vickers-Rich, P., Gimenez, O., Cúneo, R., Puerta, P. & Vacca, 
P., 1999. "A new sauropod dinosaur from Chubut Province, Argentina," in 
Tomida, Y., Rich, T. H. & Vickers-Rich, P., eds., 1999: 61?84.

The abstract of this article says it all: "The sauropod Tehuelchesaurus 
benitezii gen. et sp. nov., is based on about 50 percent of a skeleton of one 
individual. The holotype was collected in Chubut Province, Argentina, in the 
upper part of the Cañadón Asfalto Formation of Middle to Late Jurassic age. 
Although the ten most posterior dorsal centra are not complete, lacking much 
of the neural arches, nonetheless it is their features which provide the most 
useful evidence regarding the affinities of T. benitezii. Primarily on that 
basis, T. benitezii appears to have its closest affinities with the Chinese 
Middle Jurassic cetiosaur Omeisaurus tianfuensis."

So we add as genus #861

Tehuelchesaurus Rich, Vickers-Rich, Gimenez, Cúneo, Puerta & Vacca, 1999

to the Dinosaur Genera List. It is named after the Tehuelche Indians, who 
populate the locality where the type specimen was discovered, and Aldino 
Benitez, the discoverer of the specimen. The authors classify it in 
Cetiosauridae. There are skin impressions associated with the specimen.

Bonaparte, J. F., Ferigolo, J. & Ribeiro, A. M., 1999. "A new early Late 
Triassic saurischian dinosaur from Rio Grande do Sul State, Brazil," in 
Tomida, Y., Rich, T. H. & Vickers-Rich, P., eds., 1999: 89?109.

Here is the abstract: "Two incomplete specimens of a new genus and species of 
Saurischia, Guaibasaurus candelariensis, from the Caturrita Formation of Rio 
Grande do Sul, southern Brazil, offers new data on the basal dinosaurs and a 
new interpretation of the early evolution of the Saurischia. The new taxon is 
more primitive than the Herrerasauridae, in the structure of the dorsal 
vertebrae, ilium, pubis, femur, tarsus and foot. The mesotarsal condition and 
the outline of the distal section of tibia indicate the saurischian nature of 
this new form, but the almost unreduced medial wall of the acetabular portion 
of ilium shows an unrecorded primitive condition within the cited group.
"These particular characters lead us to propose a new family: the 
Guaibasauridae. Several features suggesting affinities with both the 
Prosauropoda and Theropoda, imply that Guaibasaurus candelariensis may belong 
to the ancestral group for both of them."

This article updates the Dinosaur Genera List listing for Guaibasaurus to the 
following:

Guaibasaurus Bonaparte, Ferigolo & Ribeiro, 1999

No new genus is added; my original listing of the 1998 publication of this 
name should have been labeled a nomen nudum. See also Dinosaur Genera List 
corrections #95 and 97. The name derives from the Rio Guaiba Hydrographic 
Basin, in which the specimen was found, at the famous Candelária locality.

Kellner, A. W. A. & de Azevedo, S. A. K., 1999. "A new sauropod dinosaur 
(Titanosauria) from the Late Cretaceous of Brazil," in Tomida, Y., Rich, T. 
H. & Vickers-Rich, P., eds., 1999: 111?142.

Here is the abstract: "A new titanosaur, Gondwanatitan faustoi n. gen., n. 
sp., is described and compared with other members of that sauropod clade. The 
specimen consists of an incomplete skeleton (MN 4111-V) that comes from the 
Álvares Machado region (State of São Paulo, Brazil) and was found in the 
continental deposits of the Late Cretaceous Bauru Group. This new taxon has 
the following autapomorphies: distal articular surfaces of proximal and mid 
caudals "heart-shaped"; deltopectoral crest of humerus very well developed 
and curved medially, tibia with anterior part of the proximal articulation 
projecting dorsally and cnemial crest only slightly curved laterally. 
Although its phylogenetic position is not clear, this new taxon is not 
closely related to members of the Saltasaurinae and can also be distinguished 
from more basal titanosaurs like Andesaurus and Malawisaurus. It shares at 
least one unique character with Aeolosaurus, a strongly anteriorly directed 
neural spine of the anterior and anterior midcaudals, but more material of 
both taxa is needed to confirm a close relationship."

So we add

Gondwanatitan Kellner & de Azevedo, 1999

as genus #862 of the Dinosaur Genera List. The name means, of course, 
"Gondwana giant," the "titan" being a giant figure from Greek mythology. The 
species epithet honors Fausto L. de Souza Cunha, discoverer of the skeleton. 
Family unknown.

Rich, T. H. & Vickers-Rich, P., 1999. "The Hypsilophodontidae from 
southeastern Australia," in Tomida, Y., Rich, T. H. & Vickers-Rich, P., eds., 
1999: 167?180.

Here is the abstract: "A small collection of hypsilophodontid dinosaurs 
consisting primarily of isolated bones and teeth, has been made over the past 
two decades from the late Early Cretaceous coastal outcrops in southeastern 
Australia. Fragmentary though the bulk of this material is, on dental 
evidence it is possible to recognize three different genera and species Leaell
ynasaura amicagraphica, Atlascopcosaurus loadsi and Qantasssaurus intrepidus 
gen. et sp. nov. The femora are allocated to L. amicagraphica and Fulgurotheri
um australe. The femora of F. australe show a marked diversity in size and 
shape suggesting that when the material assigned to this form species is 
better known, it could well be divided into three or more genera."

So we update the entry for Qantassaurus (see Dinosaur Genera List corrections 
#76) to the following:

Qantassaurus Rich & Vickers-Rich, 1999

No new genus is added. The dinosaur is named after Qantas, the Australian 
airline; the species epithet means, of course, "intrepid." It is from the 
Wonthoggi Formation in the Strzelecki Group; holotype is a dentary and tooth, 
and there is a referred dentary with teeth as well.

Finally, Thom Holmes notes that he is responsible for the first publication 
of the name Elvisaurus, a synonym of Cryolophosaurus, way back in a Prehistori
c Times article in 1993. So we emend the entry for that genus to read

Elvisaurus Holmes, 1993 [nomen nudum]

The Dinosaur Genera List is at my Web site

http://members.aol.com/Dinogeorge/index.html