Centrophoroides appendiculatus (Agassiz 1843)
from left to right: anterior to lateral teeth of Centrophoroides appendiculatus height of left tooth = 3,5 mm ENCI-quarry near Maastricht / Lichtenberg horizon
Occurence: abundant  Centrophoroides appendiculatus is the most common species in the Lichtenberg-horizon  (60% of the teeth in this horizon belongs to this species !)  Due to the small size of these teeth bulk sampling collecting methods are required to collect them.

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Squatina hassei (Leriche 1929)
tooth of Squatina hassei height of tooth = 2,5 mm ENCI-quarry near Maastricht / Lichtenberg horizon
Occurence: relatively rare  Due to the small size of these teeth bulk sampling collecting methods are required to collect them.

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Heterodontidae have, as the name implies, a strong heterodont dentition (the teeth have different shapes depending on position in the jaw). anterior teeth consists of a central cusp with short lateral cusplets on each side; crown faces are smooth: lateral teeth are larger, are shaped more or less rectangular with rounded edges, and have low crowns without a cusp or cusplets. The crown surface has a clear longitudinal central ridge with smaller, transversal branching ridges For an example, see the photograph of the dentition of a recent Heterodontus at the right.

from: "Sharks of the world" - Rodney Steel (1992)

Recent Heterodontidae are bottom-dwellers, using their dentition to crush the tests of crabs, mollusks and sea-urchins. Heterodontidae are known since the Jurassic and are in the Maastrichtian of the Netherlands represented by the species Heterodontus rugosis .

Heterodontus rugosis (Agassiz 1843)
symphysial (left) and anterior teeth (middle and right) of Heterodontus rugosis height of left tooth = 4 mm ENCI-quarry near Maastricht / Lichtenberg horizon
small antero-lateral tooth of a juvenile Heterodontus rugosis length of tooth = 3,5 mm ENCI-quarry near Maastricht / Lichtenberg horizon	This tooth is a nice example of socalled "ontogenic heterodonty" (= different tooth shapes in juvenile and adult individuals) Compare this tooth with the adult antero-lateral below
antero-lateral tooth of Heterodontus rugosis length of tooth = 9 mm quarry 't Rooth near Cadier en Keer / Nekum limestone
large lateral tooth of Heterodontus rugosis length of tooth = 15 mm ENCI-quarry near Maastricht / Lichtenberg horizon
Occurence: common  However the laterals can be found with "normal" collecting, bulk sampling collecting methods are required to collect the smaller anteriors.

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Plicatoscyllium minutum (Forir 1887)
anterior tooth of Plicatoscyllium minutum height = 6,5 mm ENCI-quarry near Maastricht / Lichtenberg horizon
Occurence: less common

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Palaeohypotodus bronni (Agassiz 1843)
anterior tooth of Palaeohypotodus bronni height = 27 mm ENCI-quarry near Maastricht / Lichtenberg horizon
lateral tooth of Palaeohypotodus bronni height = 15 mm ENCI-quarry near Maastricht / Lichtenberg horizon
anterior tooth of a juvenile Palaeohypotodus bronni height = 13 mm ENCI-quarry near Maastricht / Lichtenberg horizon				Some teeth of Palaeohypotodus show small vertical ridges only at the base of the crown (labial side). This is especially visible in teeth of juveniles and seems to disappear in teeth of adult specimen. Example: anterior tooth of a juvenile specimen of Palaeohypotodus bronni (height = 13 mm)
Occurence: common

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Anomotodon plicatus (Arambourg 1952)
anterior tooth of Anomotodon plicatus height = 9 mm ENCI-quarry near Maastricht / Lichtenberg horizon
Occurence: less common

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Archaeolamna kopingensis (Davis 1890)
lateral tooth of Archaeolamna kopingensis height of tooth = 12.5 mm ENCI-quarry near Maastricht / Lichtenberg horizon
Archaeolamna kopingensis : formerly referred to as Plicatolamna arcuata (Woodward, 1894) .  Read more details on elasmo.com (look at: "faunas / North Carolina - Cretaceous")  Occurence: less common

Cretalamna appendiculata (Agassiz 1843)
tooth of Cretalamna appendiculata height of tooth = 23 mm Morocco
Occurence: Cretalamna appendiculata is not rare in the Maastricht area.  (Unfortunately I haven't any proper specimen available in my collection, for this reason I included pictures of a Moroccan specimen)

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Serratolamna serrata (Agassiz 1843)
lateral tooth of Serratolamna serrata height of tooth = 11 mm ENCI-quarry near Maastricht / Lichtenberg horizon
Occurence: less common

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Pseudocorax affinis (Agassiz 1843)
anterior tooth of Pseudocorax affinis height = 16 mm ENCI-quarry near Maastricht / Lichtenberg horizon
lateral teeth of Pseudocorax affinis height of left tooth = 11 mm ENCI-quarry near Maastricht / Lichtenberg horizon
Occurence: common

Squalicorax pristodontus (Agassiz 1843)
lateral tooth of Squalicorax pristodontus height = 21 mm Albert-canal near Vroenhoven (Maastricht) / top of Meerssen limestone
Occurence: less common

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Van der Brugghen, Quack-Pottenboom and Odé reported the occurence of Scyliorhinidae in the Lichtenberg-horizon, together with a method to collect them. Due to the very small size of these teeth (1 mm and smaller) I have no material available in my collection.

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Palaeogaleus faujasi (van de Geyn 1937)
anterior teeth of Palaeogaleus faujasi height of right tooth = 3,5 mm ENCI-quarry near Maastricht / Lichtenberg horizon
lateral teeth of Palaeogaleus faujasi height of left tooth = 4 mm ENCI-quarry near Maastricht / Lichtenberg horizon
Occurence: abundant  Palaeogaleus faujasi is, together with Centrophoroides appendiculatus, one of the most common species in the Lichtenberg-horizon  (> 10% of the sharkteeth in this horizon)  Due to the small size of these teeth bulk sampling collecting methods are required to collect them.

Galeorhinus girardoti (Herman 1977)
tooth of Galeorhinus girardoti width of tooth = 4 mm ENCI-quarry near Maastricht / Lichtenberg horizon
Occurence: less common  Due to the small size of these teeth bulk sampling collecting methods are required to collect them.

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Synechodus lerichei (Herman 1977)
tooth of Synechodus cf. lerichei height = 7 mm ENCI-quarry near Maastricht / Lichtenberg horizon
Occurence: rare

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Last updated September 7th, 2006