Genus: Caulkicephalus STEEL, MARTILL, UNWIN & WINCH, 2005
Etymology: From Caulkhead, the informal name for natives of the Isle of Wight, England: workers from the Isle of Wight previously worked as caulkers in the Solent dockyards, and Greek, cephalus, "head."
= Genus: Nova STEEL, 2002

Species: trimicrodon STEEL, MARTILL, UNWIN & WINCH, 2005
Etymology: Greek, tri, "three," Greek, micro, "tiny," and Greek, don, "tooth"; referring to the small dental alveoli at tooth positions 5-7.

Holotype: IWCMS 2002.189.1, 2, 4

Locality: North-east Sandown Bay, Yaverland, Isle of Wight County, England, Southern United Kingdom.

Horizon: Upper part of the Wessex Formation.

Biostratigraphy:

Age: Barremian Stage, Lower Gallic Subepoch, Early Cretaceous Epoch, Early Cretaceous.

Material: 3 contiguous elements that form the anterior portion of the rostrum.

Reconstruction of skull.

Referred material:

IWCMS 2002.189.3: Incomplete braincase bearing the base of a sagittal crest.

IWCMS 2002.233: Distal part of the wing-phalanx ?2.

IWCMS 2002.234.1-4: 4 contiguous fragments of the shaft of a wing phalanx 1.

IWCMS 2002.236: Fragment of shaft of wing-phalanx ?4.

IWCMS 2002.237: Proximal part of the left wing-phalanx 1.

IWCMS 2003.2: Left quadrate.

IWCMS 2003.3: An element possibly from the hind limb.

IWCMS 2003.4: A fragment of a possible jugal.

SWEETMAN & MARTILL, 2010

MIWG 2756: Tooth.