Hybodus Agassiz 1837
Meaning
Humped Tooth
Classification
Elasmobranchi
Hybodontidae Owen 1846
Hybodus basanus Egerton, 1845
Stratigraphy
Wessex and Vectis Formations
Lifestyle
This shark would have eaten fish and scavenged floating carcasses.
Description
Hybodus is known from teeth and fin spines. The teeth are high with a slender cusp and a circular cross-section. The spines are quite long, with longitudinal striations and two rose of triangular denticles along the posterior length. The morphology of Hybodus teeth varies between species, so may be more of a morphotype than an actual genus
Hylaeobatis Woodward, 1916
Meaning
Wood stream
Classification
Chondrichthyes
Myliobatidae Bonaparte 1838
Hylaeobatis problematica Woodward, 1916
Stratigraphy
Wessex Formation
Lifestyle
This shark would have eaten molluscs, using it’s crushing teeth to crush the shells.
Description
Lonchidion Estes, 1964
Meaning
Wood stream
Classification
Elasmobranchi
Lonchidiidae, Herman 1977
Lonchiodion sp.
Stratigraphy
Vectis Formation
Lifestyle
This shark would have eaten fish, floating material and anything small enough for it to kill.
Description
Teeth gracile, narrow labiolingually; main cusp low, but marked, with up to two pairs of cusplets; labial protuberance narrow, often parallel sided, strongly developed; distal parts of crown pointed, often forming most distalpair of lateral cusplets; root generally wider than lowermost part of crown; labial faceof root strongly concave; small circular foramina irregularly placed close to crown-rootjunction; cephalic spines basal plate with strong ‘convict arrow-shape
Palaeoscyllium Wagner, 1857, non Marck, 1863
Meaning
Ancient houndshark
Classification
Elasmobranchii
Orectolobiformes Applegate 1972
Palaeoscyllium aff. formosum Wagner, 1857
Stratigraphy
Wessex Formation
Lifestyle
This shark would have eaten fish, floating material and anything small enough for it to kill. Unusually for this genus, it lived in non-marine waters, with low salinities.
Description
Small teeth showing moderate heterodonty. Single main cusp is moderately high and erect or slightly angled to posterior. Little or no crown shoulder at base of cusp and lateral cusplets absent or incipient. Labial face flat and unornamented in anterior teeth, with short and strong vertical ridges in lateral teeth, never extending onto main cusp. Hemiaulacorhize root low and V-shaped, with root lobes forming an angle of 60-90 degrees. root lobes parallel sided and basal face of root largely flat. Small foramina are very well developed at junction of root lobes; foramina also present along linguo-lateral side of root. Lingual extremity of root sharply angled and with large foramina.
Vectiselachos Reese and Underwood, 2002
Meaning
Vectis shark
Classification
Elasmobranchi
Lonchidiidae, Herman 1977
Vectiselachos ornatus Woodward, 1916
Stratigraphy
Wessex Formation
Lifestyle
This shark would have eaten molluscs, using it’s crushing teeth to crush the shells.
Description
Lonchidiid with pronounced crushing-type dentition; anterior teeth bulky with well demarcated cusp and labial protuberance, weakly ornamented, primarily with striations and rarely with granulae; lateral teeth lower, more heavily ornamented, always with granulae; labial protuberance in laterals poorly developed or absent; root markedly smaller than crown and comparably thin.