This is a really common trait in RB & Med cattle in northern England. I
see it regularly in even the smallest assemblages for assessment. Keith
Dobney has commented on it from sites in Lincoln. When I wrote my
thesis, I hadn't seen it in Dexters but have since had an example in a
home-bred steer. There's some discussion & references in my thesis,
online at
http://etheses.dur.ac.uk/10561/
The hooked UM3 maloccluding with LM3 are seen in Chillingham cattle &
contributory cause of death due to inefficient rumination. Reference in
thesis too.
Regards, Louisa
On 22/04/2022 14:30, Sadebeck, Felix wrote:
> Dear Jørn,
>
> This comes quite timely, as I am currently working on cattle tooth
> morphologies after stumbling across several missing third cusps in a
> Romano-British assemblage. I thought that this might be the result of
> a specific genetic trait and went to check collections of cattle with
> known breed (Julius-Kühn in Halle and Adametz in Vienna) but could
> not yet find any modern breed with a similar frequency of missing
> third cusps in M3s. Only exemption are Norwegian Telemark cattle from
> the early 20th century, supposedly having a quite narrow genetic pool
> and displaying several strange tooth morphologies (e.g. some
> mandibular M2s with three cusps).
>
> I have further noticed that some animals have a genuinely missing
> third cusp, whereas in others, the third cusp is completely worn down
> by an overgrowth of the opposing maxillary M3s, which - in the end -
> looks quite similar to the ones with a genuinely missing third cusp. I
> have some pictures of this case (although they are too big to attach
> them here) - maybe some in your assemblage are rather displaying this
> morphology due to maxillary overgrowth instead of a genetic
> pre-disposition? Let me know if you want them!
>
> However, I would be more than happy to have a chat with you about
> these peculiar M3s, as I am very interested in them myself!
>
> Cheers,
> Felix
>
> -------------------------
>
> From: Sadebeck, Felix <[log in to unmask]>
> Sent: 22 April 2022 13:21
> To: [log in to unmask] <[log in to unmask]>; Jørn Zeiler
> <[log in to unmask]>
> Subject: Re: [ZOOARCH] pathology on cattle teeth
>
> Dear Jørn,
>
> This comes quite timely, as I am currently working on cattle tooth
> morphologies after stumbling across several missing third cusps in a
> Romano-British assemblage. I thought that this might be the result of
> a specific genetic trait and went to check collections of cattle with
> known breed (Julius-Kühn in Halle and Adametz in Vienna) but could
> not yet find any modern breed with a similar frequency of missing
> third cusps in M3s. Only exemption are Norwegian Telemark cattle from
> the early 20th century, supposedly having a quite narrow genetic pool
> and displaying several strange tooth morphologies (e.g. some
> mandibular M2s with three cusps).
>
> I have further noticed that some animals have a genuinely missing
> third cusp, whereas in others, the third cusp is completely worn down
> by an overgrowth of the opposing maxillary M3s, which - in the end -
> looks quite similar to the ones with a genuienly missing thrid cusp. I
> have attached some pictures of this case - maybe some in your
> assemblage are rather displaying this morphology due to maxillary
> overgrowth instead of a genetic pre-disposition?
>
> However, I would be more than happy to have a chat with you about
> these peculiar M3s, as I am very interested in them myself!
>
> Cheers,
> Felix
>
> -------------------------
>
> From: Analysis of animal remains from archaeological sites
> <[log in to unmask]> on behalf of Jørn Zeiler
> <[log in to unmask]>
> Sent: 22 April 2022 12:27
> To: [log in to unmask] <[log in to unmask]>
> Subject: [ZOOARCH] pathology on cattle teeth
>
> Dear Zooarchers,
>
> In the faunal assemblage of the Middle-Neolithic site of Tiel Medel,
> in the central part of the Netherlands, we found a remarkably high
> number of domestic cattle mandibles in which the third cusp of the M3
> was missing. This was seen on eight out of 37 mandibles (4 right, 4
> left), i.e. 22% of the total number. This percentage was much lower in
> the previous, Early Neolithic, period of the site, where the pathology
> was seen on only one out of nine mandibles. Moreover, none of the
> mandibles from the Late Neolithic/Early Bronze Age period at Tiel
> Medel showed this particular pathology.
> Has anyone of you seen something like this before? And could the high
> frequency of this pathology be a sign of inbreeding?
>
> Very best,
> Jørn Zeiler
>
> -------------------------
>
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