Sorry, no ichnogenus has been described yet that fits your observations...

If you are absolutely sure that you have not made any mistakes, please describe it scientifically and send us a pdf of your publication. We will then list your new ichnogenus here. Thank you very much for your help and cooperation!

Knaust (2012) accidentally listed Laevicyclus here. However, it is a (sub)vertical and not a (sub)horizontal burrow.