Reptile & Amphibian Forums

I was reading from, The Snakes of Pakistan, this morning, by M.S.Khan, and saw in the venomous section that he considered several rear-fanged snakes as venomous, including...Coluber ravergieri, C. rhodorachis, C.ventromaculatus, and Spalerosophis diadema. I've also heard that Coelognathus radiata and Gonyosoma oxycephala have Duvernoy's glands. I not only think it's possible that racers and ratsnakes came from the same early ancestor on the colubrid family tree, but that the ancestor may also have been rear-fanged/venomous. Anyone want to comment as to those possibilities, or have any info on rear-fanged/venomous racers or ratsnakes? Thanks...TC

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Ratsnake Haven...researching ratsnakes since 1988

Ratsnake Haven Group...an information providing list site.

Signs point to yes on asian elaphe. It seems dropping the term Duvernoys gland is even acceptable since they appear no diferent than any other venom gland. But just about every colubrid with the exception of north american kings, rats, bulls, milks, and I think this is it...are venomous (having a venom gland).

Where I would like to hear more is in Sibon and Dipsas. I have not even heard of glands being present in them.

you know what kind of frog this is?

Yes, that's true. Not much point in discussing Duvernoy's since so many have it. But not that many species have the enlarged rear teeth, I don't think, especially in the colubrinae. That's why I was excited about the Colubers being rear-fanged and wanted to verify that.

Don't know the frog...

TC

From what I know (with the help of posts fro Dr. Fry and Dr. Wuster) nearly everything also has enlarged read teeth to some degree. But I take it you mean teeth similar to the xenodons and the heterodons. The old aglyphous opisthoglyphous stuff right?

I was told this is also a trivial topic considering rabdophis has killed humans with their aglyphous dentition.

My guess is the literature you mentioned was saying they had groves as well...and this was what was the news which made you excited? Cool

here is a photo to add to the topic...