Shop More Submit  Join Login
About Hobbyist Artist Member PaleoaficionadoMale/Colombia Groups :iconallocene: Allocene
 
Recent Activity
Deviant for 4 Years
Needs Premium Membership
Statistics 140 Deviations 6,665 Comments 24,085 Pageviews

Newest Deviations

Random Favourites

Critiques

Titanoboa cerrejonensis by avancna
by avancna

My first critique for Deviantart ... here we go ... The snake Titanoboa is the largest ever discovered and has caused some media attent...

Activity


deviantID

Zimices's Profile Picture
Zimices
Paleoaficionado
Artist | Hobbyist
Colombia
Current Residence: Colombia
Favourite genre of music: Rock, new age, classic
Operating System: Windows

Contact: zimices@gmail.com
Interests
Some time age, I made a speculative terrestrial predatory crocodile for the :iconallocene:, of Cuba:



And now, in the latest issue of the Journal of Vertebrate Paleontology (released just this week!), I found this:


Christopher A. Brochu & Osvaldo Jiménez-Vázquez (2014) Enigmatic crocodyliforms from the early Miocene of Cuba, Journal of Vertebrate Paleontology, 34:5, 1094-1101

ABSTRACTEarly Miocene deposits from the Domo de Zaza locality, in the south-central Cuban province of Sancti Spiritus, preserve crocodyliform remains, including compressed serrated teeth closely resembling those of South American sebecids. Fragmentary cranial and mandibular material is more difficult to assess. Referral to any other post-Paleogene crocodyliform known from the Western Hemisphere can be ruled out, and phylogenetic analyses are unable to pinpoint its relationships. Similarities can be found with planocraniids, including ventrally oriented and mediolaterally expanded orbital surfaces, but the morphology of the quadrate is inconsistent with a planocraniid affinity. A sebecid in the Miocene of Cuba would be congruent with evidence from other vertebrates suggesting extensive dispersal between the Greater Antilles and South America during the Neogene, and it would be the first Neogene record of the group outside South America. The other crocodyliform may indicate the presence of an endemic West Indian lineage not closely related to any contemporaneous group. It is also consistent with extant Crocodylus arriving in the Neotropics within the past 5–10 million years.

Any of the two options - a planocraniid (formerly pristichampsid) or a sebecid is very interesting, and shows that in the past, the Antilles having an interesting terrestrial fauna that includes other lineages of crocodyliforms. Life is stranger than fiction, isn't? :)

AdCast - Ads from the Community

×

Groups

Comments


Add a Comment:
 
:icondontknowwhattodraw94:
Dontknowwhattodraw94 Featured By Owner 2 days ago  Hobbyist Traditional Artist
Thanks for the watch :D
Reply
:iconzimices:
Zimices Featured By Owner 1 day ago  Hobbyist
No, problem, I must add your account long time ago! :)
Reply
:iconplioart:
Plioart Featured By Owner Oct 15, 2014  Hobbyist Digital Artist
Thanks for the +fav!
Reply
:iconzimices:
Zimices Featured By Owner Oct 15, 2014  Hobbyist
No problem! :)
Reply
:iconromero-leo:
romero-leo Featured By Owner Oct 1, 2014  Professional Interface Designer
Hola Zimices. Conoces alguna especie migratoria de Colombia ya extinta? Alguna que ya haya sido estudiada y que sea probable que haya sido migratoria. La verdad no tengo la menor idea de qué tan difícil sea determinar esto o en qué fuentes consultar. Te agradecería mucho cualquier ayuda. Saludos
Reply
:iconzimices:
Zimices Featured By Owner Oct 1, 2014  Hobbyist
Hola, pues es una cuestión muy interesante pero extremadamente difícil de responder, estamos hablando de comportamientos y estos raramente dejan indicios directos en los fósiles, el problema es que las especies extintas que yo conozco eran más bien residentes permanentes y sin mayor razón razón para movilizarse a grandes distancias, además muchas especies migratorias suelen ser aves y su registro fósil en Colombia es muy escaso. Lo único se me ocurre ahora son los mastodontes, en particular los conocidos como Stegomastodon (o Haplomastodon) que pudieron asemejarse en ese sentido a las poblaciones de elefantes africanos que se movilizan por distintas áreas en busca de alimentos. Hay un artículo del que saco este extracto: "Se cree que los Stegomastodon estaban adaptados a condiciones climáticas más templadas. Análisis de isótopos de carbono en muestras de Argentina y Ecuador sugieren que ambas especies de Stegomastodon podrían haber tenido dietas mixtas más variables expresando patrones de movilidad mayores a los de Cuvieronius hyodon ocasionados por la necesidad de buscar alimentos constantemente." (página 83). Ahora, si migraban a grandes distancias en determinadas épocas del año o solo si se presentaban condiciones difíciles es básicamente especulación.
Reply
:iconromero-leo:
romero-leo Featured By Owner Oct 5, 2014  Professional Interface Designer
Excelente información.
Pienso hacer una ilustración de esto, espero captar bien la especie dado que es muy parecido al elefante hindú. Estaré leyendo entonces ese documento.
Gracias.
Reply
:iconzimices:
Zimices Featured By Owner Oct 5, 2014  Hobbyist
Con gusto. Si necesitas más información ya sabes que solo tienes que preguntarme. Saludos :)
Reply
:iconpaleopeter:
paleopeter Featured By Owner Sep 26, 2014  Hobbyist Digital Artist
Thanks for faving my work  :happybounce: 
Reply
:iconzimices:
Zimices Featured By Owner Sep 28, 2014  Hobbyist
No problem :)
Reply
Add a Comment: