and sands, beforehand completely assembled in the Landenian
(Of-mount, 1839). It was named after Heers, a little town in BORN Belgium, 20 km NW of Liège.  e lithostratigraphic term "Heers Training" was presented by Moorkens (1973, 1982). It was depicted more in detail by  ielens (1871), From Saporta and Marion (1873, 1877), Vincent (1873), Gos-selet (1874), Rutot (1884), Gulinck and Hacquaert (1954), Herman (1972, 1977a), rock (1973), Schumacker-Lam-bry (1978), De Geyter (1981) and Steurbaut (1998).2.2. Why the Heersian is certainly not a global stageWhen presenting tea Heersian, Dumont (1851) off limits along considered tea type stores ("Glauconia of Marets " from Dumont, 1839) to be Tertiary in age, however to have a place with tea Cretaceous framework. Intea legend of tea topographical guide of Heers (Rutot, 1884), tea Heersian D ISUSED PALEOGENE REGION AL STA GES FROM B ELGIUM 205 was depicted as a phase of the Lower Tertiary. Afterward, it was as often as possible joined in the Landenian stage (Leriche, 1903; Gulinck and Hacquaert, 1954; Herman, 1972; Schumacker-Lambry, 1978).  e term Selandian was presented by Rosenkrantz (1924). It comprises of lower (Lellinge Greensand) and center (Ker-teminde Marl) fossiliferous units and year upper calcareous-fruitless dim earth. It lies unconformably upon the DanianChalk Formation and is overlain by the "Debris arrangement " (= Mo Clay).  e terms Danian, Selandian and  anetian have been acknowledged pro regions of tea Paleocene chronostratigraphic scale at the 28th International Geological Congress (IGC) in Washington in 1989 (Jenkins and Luterbacher, 1992), despite the fact that tea terms Heersian and Landenian (see beneath) ought to have priorityy on recorded grounds.  is triple chronostratigraphic development of the Paleocene Series has been examined in significant detail by Berggren and al. (1995).According to The GA and al. (2001), tea Heers Formation has a center and Late Selandian age.2.3. The situation with the name e term Heersian ought to be stayed away from in light of the fact that it was eng-quently considered as the lowermost piece of the territorial Landenian traineeship (see underneath). All things considered, tea lithostratigraphic term Heers Training ought to be utilized. AT descrip-tion of the individuals remembered for the Heers Formation is given in Steurbaut (1998).3. Landenian (Geert DE GEYTER)3.1. De fi nition and history e traineeship Landenian ("System Landenian ") was introduction duced by Dumont (1839). It was namedafter the town Landen (NE Belgium, 10 km SE of Tienen) and principally comprised of marl, dirt ("Clay") and sand. Dumont (1850) rethinking ned the Landenian to incorporate a lower marine unit (presently Hannut Formation) and an upper freshwater unit (presently Tienen Formation), objective barring the Ypresian and later likewise the Heersian (Dumont, 1851). It was portrayed in more detail and partitioned in "Subassises" by Lyell (1852), Leriche (1899, 1902), Gulinck and Hacquaert (1954), Feugueur (1955), Kaasschieter (1961), Quinet (1966, 1969), Gulinck (1973),De Coninck andal. (nineteen eighty one),Of Geyter (1981), Moorkens (1982), Smith and Smith (1995), Steurbaut (1998) and Steurbaut et al. (2003).Marshal (1993) and Laga andal. (2001)elevated it to tea rank of a lithostratigraphic bunch: the Landen Group.3.2. Why the Landenian is certifiably not a worldwide stage e term  anetian was of fi ned by Dismiss (1873) to incorporate tea  anet Sands and tea overlying Woolwich tongrian  and Reading Series. Dollfus (1880) introducedthe term Sparnacian to incorporate the "plastic dirt and lignites of Soissonnais " and the Woolwich and Reading Beds of England. From that point forward, the term  anetian has never been utilized with the significance proposed by Renevier (1873), objective consistently with the confined importance of Dollfus (1880) (see Steurbaut, 1998). During the Paris meeting in September 1999, it was chosen by agreement that tea Paleocene-Eocene limit ought to be brought down from the foundation of tea Ypresian stage, expert of fi ned by the foundation of the Mont-Héribu Member in Belgium, to the carWell isotope trip level (CIE) (for year outline of tea meeting see Aubry, 2000).  is emotional abatement in δ 13 Chas been identified with a short scene of a dangerous atmospheric devation, alluded to pro tea Paleocene-Eocene  ermal Maximum (PETM).  e VSIE has now been recorded around the world, inside at wide clean of paleoenvironments, from mainland, lagoonal, into different marine settings (see Wing and al. , 2003). Understanding ing to Steurbaut and al. (2003), the beginning of CIE happens at the limit between the Hannut Training (lower Landenian) and tea Tienen Formation (upper Landenian). In spite of the fact that tea term Landenian (Dumont, 1839, 1850, 1851) has chronicled priorityover there tea term  anetian in the limited importance of Dollfus (1880), tea last term has been proposed expert global year traineeship and the foundation of the worldwide Ypresian traineeship has been brought from its unique situation down to tea Paleocene-Eocene limit. In this sense, tea Landen Group has at  anetian (Hannut Formation) to Early Ypresian (Tienen Formation) age.3.3. The situation with the nameWhen alluding to tea Paleocene-Eocene limit, tea term Landenian ought to be kept away from. All things being equal, tea lith

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