TROODONTIDAE

Blog sobre paleontología de dinosaurios: ofrece noticias de actualidad, divulgación y exposición de algunos temas e ideas; entre otros.

Contador de visitas (puesto a 16-7-2009)

14/12/09

Albalophosaurus yamaguchiorum y el origen de Ceratopsia.

Albalophosaurus yamaguchiorum

Se trata de un nuevo Ceratopsia que ha sido hallado en la formación Kujawima (del grupo Tetori),en Hakusan, en la Prefectura de Ishikawa, en el japón central.
Ha sido clasificado como Ceratopsia basal, ya que presenta características ambiguas que lo relacionan tanto con Ceratopsia como con Ornithopoda, pudiendo por tanto situarse como taxón basal de Neuornitischia.
Sin embargo, la primera interpretación parece mucho más parsimoniosa, ya que en el caso segundo se rompería el clado Marginocephalia (=Pachycephalosauria+Ceratopsia), que debería formar, y el clado Heterodontosauriformes (=Heterodontosauridae+Marginocephalia) propuesto por Xu et al en 2006.

En la parte inferior a estas líneas, se muestra una reconstrucción de Yinlong downsi, otro Ceratopsia basal.

25 comentarios:

Fujur dijo...

Extraordinario! Pachicepalosáuridos y ceratópsidos por un lado, emparentados con los ornitópodos. Ahora bien, cuál es el parecido, antepasado común, con los estegosáuridos y los ankilosáuridos. Es curioso.

Gran post, para variar!
Te haces MUCHO de esperar! ;-)

William Buckland dijo...

En el caso de Thyreophora (Stegosauria+Ankylosauria), el miembro más primitivo es Scutellosaurus http://www.dinossite.net/Scutellosaurus001.jpg
, un simpático animalito coetáneo de Heterodontosaurus.
Y como antepasado común de todos los Ornithischia, de momento quedanmuy bien Leshotosaurus y Pisanosaurus.
El caso es que a mi también me parece curioso, porque además es como si el árbol genealógico de Ornithischia ya funcionase, parece que la idea de sus linajes y de su origen empieza a estar más clara y todos parecen venir de adaptaciones de Leshotosaurus y Pisanosaurus.

Saludos, e intentaré volver a publicar más a menudo, pero no puedo prometer nada.

Dinorider d'Andoandor dijo...

genial! esas formas transicionales me encantan

William Buckland dijo...

Y que lo digas, siempre resulta muy exótico ver a las condiciones ancestrales.

Saludos.

Anónimo dijo...

Your blog keeps getting better and better! Your older articles are not as good as newer ones you have a lot more creativity and originality now keep it up!

Anónimo dijo...

http://www.fragrance-direct.info/ original Initiation 0.17 FL OZ bonus Purchase Les Belles De Ricci Liberty Fizz 25ml reviews best Sisley 5ml website Sale of Trouble 40ml for less Sale of fragrance sets for women 96.60ml gift sets cheapest Gucci (new) 50ml deals cheap best smelling colognes for men 1 FL OZ samples cheapest Covet Pure Bloom 80ml amex authentic Leather 15ml deals Where to buy mark jacobs fragrance 2.5 FL OZ reviews original Mademoiselle Jacadi 3 FL OZ 90ml amex original Bvlgari Black (bulgari) 40ml deals authentic Eaux De Caron Pure 1 FL OZ compare prices not fake fragrance rose hotel singapore 15ml online not fake women perfume 2008 0.17 FL OZ diners club Purchase Disney Princess Belly 0.05 FL OZ visa Get grace fragrance 25ml accepts credit cards Sale of Touch With Love 3.4 FL OZ 100ml samples Where to buy perfume bloggers 0.05 FL OZ online cheap Magical Moon 3.4 FL OZ 100ml compare prices

[b]Get the best deals on Mens and Womens Perfumes.[/b]
[url=http://cloakedlink.com/nsayuwazuf]
[img]http://fragrance-direct.info/bigarrow.gif[/img]

http://cloakedlink.com/nsayuwazuf <== VISIT THIS SITE TODAY (Up to[u] 80% Discount[/u] on select items)
[/url]



[size=1] IGNORE THIS----------------------------
[url=http://lucasbuckley157.vox.com/library/post/buy-salvia-cheap-online-purchase-salvia-cheap-salvia-shops-purchase-salvia-divinorum-40x-extracts.html] Order Salvia plant Inexpensive Online [/url]
[url=http://sites.google.com/site/buysalviacheaponline/buy-salvia-cheap-online-purchase-salvia-cheap-salvia-shops-purchase-salvia-divinorum-40x-extracts] Buy Salvia plant Cheap Online [/url]
[url=http://wheretobuysalvi.livejournal.com/463.html]Order Salvia Affordable Online [/url]
[url=http://buysalviacheap3.blogspot.com/2010/01/buy-salvia-cheap-online-purchase-salvia.html]Purchase salvia product Cheap Online [/url]

White Rock yteeth whitening tooth whitening maryland nhs teeth whitening teeth whitening southampton [url=http://teethwhiteningstripsreviews.info] tooth whitening strips reviewed[/url] Goa zoom teeth whitening and sutherland dentist twilight teeth whitening Thorold teeth whitening kent eteth whitening Weyburn professional whitening teeeth whitening teeth whitening advice Asia otc Best tooth whiteningf teeth whitening independence missouri

[url=http://guaranteedheightincrease.info/]height improvement[/url] - http://guaranteedheightincrease.info/

[url=http://provenpenisenlargement.info/]proven penis enlargement[/url] - http://provenpenisenlargement.info/

[url=http://provenskincareadvice.info/]skin care techniques[/url] - http://provenskincareadvice.info/

[url=http://getrichgambling.info/]get riches gambling[/url] - http://getrichgambling.info/

[url=http://herpesoutbreak-gentalwarts.info/]herpes outbreak[/url] - http://herpesoutbreak-gentalwarts.info/

[url=http://STOP-PREMATURE-EJACULATION-SOLUTIONS.INFO]stop premature ejaculation[/url] - http://STOP-PREMATURE-EJACULATION-SOLUTIONS.INFO

[url=http://3GMOBILEPHONESFORSALE.INFO]3g mobile cellphones for sale[/url] - http://3GMOBILEPHONESFORSALE.INFO

[url=http://internationaloddities.reviewsdiscountsonline.com] internationaloddities scams[/url]

[url=http://drobuds.reviewsdiscountsonline.com]buy dro buds [/url]

Anónimo dijo...

Howdy

I am new to this site. I found loads of useful information here. I would also like to add up some thing for this community. I would like to share some [url=http://www.weightrapidloss.com/lose-10-pounds-in-2-weeks-quick-weight-loss-tips]quick weight loss tips[/url]. If you want to know how to lose 10 pounds in a week, you are probably not seeing for a common dieting and exercise plan. You can lose weight with a general diet and workout plan, However this requires a lot of time doing intensive cardio drills and adhering a strict diet. Here I will outline the exact steps that I took to lose 10 pounds in just a calendar week.

1. Keep Distance from all deep-fried foods for the week
2. Drink an 8oz glass of grapefruit with breakfast every day. (this speeds up up your metabolism)
3. Eat Up average portions (stop taking when you are full)
4. Instead of eating 3 big a meals a day, consume 5-6 smaller meals to keep your metabolism up and keep your body burning fat.
5. Aviod your habbit of eating after 9 P.M.. Calories do not burn, when you eat so late.
6. Get plenty of sleep every night. Not having enough rest has been proven to be a leading factor to the body putting up excess fat.
7. Utilise a body/colon clean for the 7 days. This will get rid of needless weight stored close to the tummy area as well as cleanse your body of harmfull pollutants that cause you store fat and feel tired. Flush away excess pounds around the stomach area that otherwise would be hard to lose.
8. I suggest you using Acai Berry Diet Pills. This one is proven to work, and you can get a free trial.
9. For those mens/womens who desire to burn fat quickly, avoid alcoholic beverage.
10[url=http://www.weightrapidloss.com/lose-10-pounds-in-2-weeks-quick-weight-loss-tips].[/url] A low GI diet is an outstanding method of loosing weight quickly.

Thanks![url=http://www.weightrapidloss.com].[/url]!

Anónimo dijo...

like gambling? ardour las vegas? dispute the all supplemental [url=http://www.casinolasvegass.com]casino[/url] las vegas at www.casinolasvegass.com with all upwards 75 additional manumitted [url=http://www.casinolasvegass.com]online casino[/url] games like slots, roulette, baccarat, craps and more and lug away unbending notes with our $400 not performed bonus.
we from unvaried wise b wealthier games then the superannuated online [url=http://www.place-a-bet.net/]casino[/url] www.place-a-bet.net!

Anónimo dijo...

christen dating page [url=http://loveepicentre.com/]free online dating services[/url] accomodating hearing disabilities http://loveepicentre.com/ dating service online

Anónimo dijo...

Hello

You can watch latest movies for free here:
http://www.freemoviez.biz

There are many HD movies

Adios

[URL="http://www.freemoviez.biz"][IMG]http://static.thepiratebay.org/img/firefox-22.png[/IMG][/URL]

Anónimo dijo...

rachel nichols sienna miller pics, [url=http://community.bonniehunt.com/forum/topics/jim-wahlberg-and-mark-wahlberg]sienna miller fakes[/url] sienna miller g.i. joe
gehjfrgghh

Anónimo dijo...

hello


just registered and put on my todo list


hopefully this is just what im looking for looks like i have a lot to read.

Anónimo dijo...

if you guys requisite to grab [url=http://www.generic4you.com]viagra[/url] online you can do it at www.generic4you.com, the most trusted viagra pharmacopoeia pro generic drugs.
you can learn drugs like [url=http://www.generic4you.com/Sildenafil_Citrate_Viagra-p2.html]viagra[/url], [url=http://www.generic4you.com/Tadalafil-p1.html]cialis[/url], [url=http://www.generic4you.com/VardenafilLevitra-p3.html]levitra[/url] and more at www.rxpillsmd.net, the principal [url=http://www.rxpillsmd.net]viagra[/url] informant on the web. well another great [url=http://www.i-buy-viagra.com]viagra[/url] pharmacy you can find at www.i-buy-viagra.com

Anónimo dijo...

http://meen.in/flutamide/flutamide-topical-cream
[url=http://meen.in/ciprofloxacin/ciprofloxacin-urinary]rabeprazole sodium drug classification[/url] against random drug testing [url=http://meen.in/celexa/what-are-some-the-the-symtoms-going-celexa]what are some the the symtoms going celexa[/url]
mexico nogales pharmacy http://meen.in/celadrin/celadrin-hadley-wood
[url=http://meen.in/cefdinir/correct-dosage-cefdinir-two-year-old]animated drugs[/url] red ribbon drug awarness week [url=http://meen.in/clavulanate/clavulanate-potassium]clavulanate potassium[/url]
l and s pharmacy http://meen.in/flonase/astelin-versus-flonase
[url=http://meen.in/feldene/flavoxate-dosage]aarp pharmacy saver plan[/url] cheaper viagra levitra apcalis [url=http://meen.in/flomax/flomax-tamsulosin-new-mexico]flomax tamsulosin new mexico[/url] cialis without prescription [url=http://meen.in/ceftin/cefuroxime-ceftin]cefuroxime ceftin[/url]

Anónimo dijo...

Good day!

I am new here and I just wanted to say hi!

Adios

Anónimo dijo...

Hi guys,

What online mags do you read and would recommend?

For all you punkrock people out there I recommend The Enough Fanzine. It is one of the first ska fanzines on the web.

They have throusands of reviews from the most independent bands all over the world. Check them out online: [url=http://www.enoughfanzine.com]Enough Fanzine[/url]. Best of it all, they are 100% non-profit and just helping the scene!

Looking forward to your recommendations.

Regards!

Anónimo dijo...

phat ebony movie [url=http://moviestrawberry.com/films/film_the_black_balloon/]the black balloon[/url] amc whitby movie listings http://moviestrawberry.com/films/film_kung_fu_panda_secrets_of_the_furious_five/ the movie animal house
alien abduction movie [url=http://moviestrawberry.com/films/film_just_visiting/]just visiting[/url] movie gran prix http://moviestrawberry.com/films/film_the_tournament/ ufo movie clips
movie screensavers [url=http://moviestrawberry.com/films/film_labou/]labou[/url] jenna jammison movie clips
movie triva [url=http://moviestrawberry.com/films/film_scotland_pa/]scotland pa[/url] mortal combat movie http://moviestrawberry.com/films/film_mickey_donald_goofy_the_three_musketeers/ movie review on freddie versus jason
great porn movie dumps full length [url=http://moviestrawberry.com/films/film_crying_freeman/]crying freeman[/url] movie filmed in ireland http://moviestrawberry.com/films/film_rio_conchos/ larry miller movie theatre

Anónimo dijo...

hollywood theaters movie times [url=http://moviestrawberry.com/films/film_fighting/]fighting[/url] movie theatres in amsterdam http://moviestrawberry.com/hqmoviesbygenres/download-genre_comedy-movies/?page=47 old forge movie theater
tomb raider movie [url=http://moviestrawberry.com/films/film_into_the_sun/]into the sun[/url] knocked up movie http://moviestrawberry.com/films/film_fired_up/ torrent high school musical 2 movie
bee movie wallpapers [url=http://moviestrawberry.com/films/film_haute_tension/]haute tension[/url] b2k movie you got served
westmall 8 movie theatre [url=http://moviestrawberry.com/films/film_driving_miss_daisy/]driving miss daisy[/url] movie producer requirements http://moviestrawberry.com/films/film_dead_man/ george clooney movie directing
free movie pass xxx [url=http://moviestrawberry.com/films/film_they_wait/]they wait[/url] movie the football factory http://moviestrawberry.com/films/film_mr_woodcock/ movie theatres in kitty hawk nc

Anónimo dijo...

Allow to pass the beast with two backs casinos? authenticate this young [url=http://www.realcazinoz.com]free casino[/url] games. commander and production online casino games like slots, blackjack, roulette, baccarat and more at www.realcazinoz.com .
you can also delay our up to date [url=http://freecasinogames2010.webs.com]casino[/url] manage at http://freecasinogames2010.webs.com and win material folding shin-plasters !
another unique [url=http://www.ttittancasino.com]casino[/url] spiele plot is www.ttittancasino.com , instead of german gamblers, slip in magnanimous online casino bonus.

Anónimo dijo...

adult movie rentals threw the mail [url=http://moviestrawberry.com/films/film_bubba_ho_tep/]bubba ho tep[/url] madalyn kahn and mel brooks movie yes yes yes yes yes yes no http://moviestrawberry.com/films/film_sea_of_sand/ movie theaters in germany
no witness movie [url=http://moviestrawberry.com/films/film_american_graffiti/]american graffiti[/url] mn movie theaters http://moviestrawberry.com/films/film_restraint/ black dawn movie
cologne on ron burgundy movie [url=http://moviestrawberry.com/films/film_the_fly_ii/]the fly ii[/url] ditmar movie projector for sale
fetish foot lesbian movie [url=http://moviestrawberry.com/films/film_heartbreakers/]heartbreakers[/url] mooresville movie theater http://moviestrawberry.com/films/film_blinded/ iron man movie trailors
movie boy must figure out how he died [url=http://moviestrawberry.com/films/film_the_texas_chainsaw_massacre_the_beginning/]the texas chainsaw massacre the beginning[/url] movie lesbian http://moviestrawberry.com/films/film_bad_apple/ title river in a 1957 movie

Anónimo dijo...

rise of the silver surfer blu ray movie problems [url=http://moviestrawberry.com/films/film_captain_scarlett/]captain scarlett[/url] movie downloads for pocket pc http://moviestrawberry.com/films/film_the_house_of_fear/ hindi movie mp3 free
torque the movie [url=http://moviestrawberry.com/films/film_hookers_inc/]hookers inc[/url] movie archives http://moviestrawberry.com/hqmoviesbyyear/year_1946_high-quality-movies/ how to convert a dvd file to windows movie maker format
shyla stylez free full movie [url=http://moviestrawberry.com/films/film_the_big_picture/]the big picture[/url] book and movie gifts and gift baskets
harrisburg movie theater showtimes pennsylvania [url=http://moviestrawberry.com/films/film_lovely_by_surprise/]lovely by surprise[/url] joy division the movie http://moviestrawberry.com/hqmoviesbygenres/download-genre_crime-movies/?page=1 free sex movie paris hilton
movie forums transformers [url=http://moviestrawberry.com/films/film_loaded_70/]loaded 70[/url] movie stream free http://moviestrawberry.com/films/film_enemy_mine/ the last of the mohicans movie compared to real life

Anónimo dijo...

I created a Starcraft Two site located here:

[url=http://www.thedarkshrine.com]Starcraft 2[/url]
http://www.thedarkshrine.com

I am going to be putting on many things to it, such as replays, vods, maps, fpvods, live streams, tools, esports info and much more. There's a wiki there and really could use contributors to help me out. I hope you guys can register as my goal is for this web site to be one of the most powerful Starcraft II sites on the Internet. Please register soon as there will be a tourney. If you have any feedbacl please feel free to let me know!

Thank you. Great board btw!

Anónimo dijo...

Another Day...Another Official Useless, Empty-Headed, Dimwitted Topic-less Spam Thread [url=http://tjenepengerraskt.blogspot.com/]tjene penger på nett[/url]

Anónimo dijo...

Usually I do not post on blogs, but I would like to say that this article really forced me to do so! Thanks, really nice article.

Anónimo dijo...

Sweet site, I hadn't noticed troodontidae.blogspot.com previously in my searches!
Carry on the superb work!